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A Black mathematical history

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Journeys of Black Mathematicians: Forging Resilience Zala Films Directed by George Csicsery

What does a mathematician look like? Standing in front of a room of Black children aged six to twelve, research mathematician Zerotti Woods — who posed the question — is not far off their description. Woods, who is based at Johns Hopkins University in Baltimore, Maryland, is wearing nice trousers, a jacket and even round glasses. Yet he’s told he doesn’t look like a mathematician. Their unspoken assumption seems to be that mathematicians are white.

In the documentary Journeys of Black Mathematicians: Forging Resilience, film maker George Csicsery interviews more than 50 scholars, who speak about the value of mathematics, share parts of their journeys and look to the future. The film, which was co-produced with the Mathematical Sciences Research Institute, premiered in January and has been released online. By juxtaposing career paths with the historical timeline of the civil-rights movement in the United States, the film seeks to show what Black mathematicians have been through and provide hope for what can be. That hope is more than a wish. It is backed up by descriptions of supportive programmes, nurturing educators, positive changes in the community and success stories.

Historical attitudes toward Black mathematicians thread through the film. Scholars such as William Claytor faced blatant discrimination throughout their careers. The US Supreme Court’s 1954 integration decision, in which segregated schools were deemed unconstitutional, gave Black students access to white educational spaces. But such access did not necessarily come with better education or treatment. One interviewee notes that the good teachers at Black schools did not follow the children to the desegregated schools. In higher education, Black spaces did not cease to exist. Historically Black colleges and universities (HBCUs) were almost all founded before desegregation, because most pre-existing institutions, particularly in the southern states, either prohibited Black students from attending, or limited their presence through quotas.

Role models

Teaching and learning at HBCUs is a point of pride throughout the documentary. These are places where Black maths students are nurtured rather than ‘othered’. Many interviewees describe how the representation and support they found at these colleges propelled them into the field.

Among those acknowledged as impactful educators are Claude Dansby, who was at Morehouse College in Atlanta, Georgia, from 1922 to 1967, and Etta Falconer, who was mainly at Spelman College, also in Atlanta, between 1965 and 1985. Through interviews with former students and colleagues, Csicsery draws parallels between them and two mathematicians currently at Morehouse: Duane Cooper and Ulrica Wilson. All are beloved by students and are considered the main reason that some pursued and succeeded in maths. All four had a crucial influence on the paths of dozens of Black mathematicians — which speaks not just to their teaching methods, but more importantly to how they supported their students, and believed in and cared about them. Woods specifically mentions that Cooper taking responsibility for him was the only reason that he was allowed to finish his degree at Morehouse after having been expelled for a year. That care made all the difference.

Many who were interviewed in the film note just how few Black people they met on their maths journey. I’ve also found this. According to the 2018 US Mathematical and Statistical Sciences Annual Survey, 2.9% of US maths PhDs were awarded to Black mathematicians that year (see go.nature.com/3tphae6). Given that around 14% of the US population is Black, this number is incredibly low.

If you’re looking for an explanation, the documentary describes some of the roots of the systemic racism that still permeates maths. The US National Association for Mathematicians (NAM), created in 1969, aims to promote excellence in the mathematical sciences and “the mathematical development of underrepresented minorities”. Civil-rights pioneer and former educator at Winston-Salem State University in North Carolina, Virginia Newell, who appears in the film, makes its origins clear: “The reason why we started the NAM was because the whites did not want us at their meetings.” And how could Black mathematicians be welcome when meetings were being held at segregated institutions?

Portrait of William Claytor from 1937

William Claytor was discouraged by the racism prevalent in the field.Credit: Courtesy of the Dolph Briscoe Centre for American History

Black people are often still being treated disrespectfully at maths meetings, confirmed a 2021 report by an American Mathematical Society task force (see go.nature.com/43dhf67). By organizing a range of events — such as lecture series, sessions at large maths conferences and MATHFest, an annual meeting and networking event for undergraduate students — and by ensuring Black scholars are invited to them, NAM provides, crucially, a community.

Aspirations for the future

The stories of Black mathematicians shared in the film are inspiring. It is wonderful to learn about successes in academia and industry — but there is still a long way to go. Csicsery makes that clear by titling the final chapter of the film ‘Unfinished business’. The percentage of US maths PhDs earned by Black people has remained mostly unchanged since 1978. “We’ve not moved the needle in producing PhDs,” notes Freeman Hrabowski III, former president of the University of Maryland in Catonsville, who grew up in segregated Alabama.

The question that needs to be asked now is which spaces are worth entering. The film suggests that Black people should be everywhere, so that there are those with similar mindsets and values in every room. But I disagree; there are some rooms that we should not aspire to enter. Not just because they provide a hostile environment — that can eventually be changed. But because some spaces have too high a moral cost. Is it worthwhile to create weapons or work for security agencies, for example, in a push for representation? For me, the answer to that is absolutely not.

Csicsery’s film did not interrogate that idea, but we should. We should sit with the discomfort of the fact that pushing back against the inequities of the past and present should not include contributing to the oppression of others. When watching this worthwhile film, you will be equipped with enough history to ponder another question: where do we go from here?

Competing Interests

The author declares no competing interests.

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Do black holes explode? The 50-year-old puzzle that challenges quantum physics

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In hindsight, it seems prophetic that the title of a Nature paper published on 1 March 1974 ended with a question mark: “Black hole explosions?” Stephen Hawking’s landmark idea about what is now known as Hawking radiation1 has just turned 50. The more physicists have tried to test his theory over the past half-century, the more questions have been raised — with profound consequences for how we view the workings of reality.

In essence, what Hawking, who died six years ago today, found is that black holes should not be truly black, because they constantly radiate a tiny amount of heat. That conclusion came from basic principles of quantum physics, which imply that even empty space is a far-from-uneventful place. Instead, space is filled with roiling quantum fields in which pairs of ‘virtual’ particles incessantly pop out of nowhere and, under normal conditions, annihilate each other almost instantaneously.

However, at an event horizon, the spherical surface that defines the boundary of a black hole, something different happens. An event horizon represents a gravitational point of no return that can be crossed only inward, and Hawking realized that there two virtual particles can become separated. One of them falls into the black hole, while the other radiates away, carrying some of the energy with it. As a result, the black hole loses a tiny bit of mass and shrinks — and shines.

Unexpected ramifications

The power of Hawking’s 1974 paper lies in how it combined basic principles from the two pillars of modern physics. The first, Albert Einstein’s general theory of relativity — in which black holes manifest themselves — links gravity to the shape of space and time, and is typically relevant only at large scales. The second, quantum physics, tends to show up in microscopic situations. The two theories seem to be mathematically incompatible, and physicists have long struggled to find ways to reconcile them. Hawking showed that the event horizon of a black hole is a rare place where both theories must play a part, with calculable consequences.

And profoundly unsettling ones at that, as quickly became apparent. The random nature of Hawking radiation means that it carries no information whatsoever. As Hawking soon realized2, this means that black holes slowly erase any information about anything that falls in, both when the black hole originally forms and subsequently as it grows — in apparent contradiction to the laws of quantum mechanics, which say that information can never be destroyed. This conundrum became known as the black-hole information paradox.

It has since turned out that black holes should not be the only things that produce Hawking radiation. Any observer accelerating through space could, in principle, pick up similar radiation from empty space3. And other analogues of black-hole shine abound in nature. For example, physicists have shown that in a moving medium, sound waves trying to move upstream seem to behave just as Hawking predicted. Some researchers hope that these experiments could provide hints as to how to solve the paradox.

A scientific wager

In the 1990s, the black-hole information paradox became the subject of a celebrated bet. Hawking, together with Kip Thorne at the California Institute of Technology (Caltech) in Pasadena, proposed that quantum mechanics would ultimately need to be amended to take Hawking radiation into account. Another Caltech theoretical physicist, John Preskill, maintained that information would be found to somehow be preserved, and that quantum mechanics would be saved.

But in 1997, theoretical physicist Juan Maldacena, who is now at the Institute for Advanced Study in Princeton , New Jersey, came up with an idea that indicated Hawking and Thorne might be wrong4. His paper now has more than 24,000 citations, even more than the 7,000 or so times Hawking’s paper has been cited. Maldacena suggested that the Universe — including the black holes it contains — is a type of hologram, a higher-dimensional projection of events that occur on a flat surface. Everything that happens on the flat world can be described by pure quantum mechanics, and so preserves information.

Cosmologist Stephen Hawking reacts during a conversation on October 10, 1979 in Princeton, New Jersey.

Stephen Hawking worked on the black hole information paradox throughout his life.Credit: Santi Visalli/Getty

At face value, Maldacena’s theory doesn’t fully apply to the type of Universe that we inhabit. Moreover, it did not explain how information could escape destruction in a black hole — only that it should, somehow. “We don’t have a concrete grasp of the mechanism,” says Preskill. Physicists, including Hawking, have proposed countless escape mechanisms, none of which has been completely convincing, according to Preskill. “Here it is, 50 years after that great paper, and we’re still puzzled,” he says. (Maldacena’s ideas were enough to change Hawking’s mind, however, and he conceded the bet in 2004.)

A quantum conundrum

Attempts to solve the information paradox have grown into a thriving industry. One of the ideas that has gained traction is that each particle that falls into a black hole is linked to one that stays outside through quantum entanglement — the ability of objects to share a single quantum state even when far apart. This connection could manifest itself in the geometry of space-time as a ‘wormhole’ joining the inside of the event horizon with the outside.

Entanglement is also one of the crucial features that make quantum computers potentially more powerful than classical ones. Moreover, in the past decade, the link between black holes and information theory has become only stronger, as Preskill and others have investigated similarities between what happens in holographic projections and the types of error-correction algorithm developed for quantum computers. Error correction is a way of storing redundant information that enables a computer — whether classical or quantum — to restore corrupted bits of information. Some researchers see quantum computation theory as the key to solving Hawking’s paradox. When creating a black hole, the Universe could be similarly storing several versions of its information — some inside the event horizon, some outside — so that the destruction of the black hole does not erase any history.

But other researchers think that the full resolution of the information paradox might have to wait until another big problem is solved — that of reconciling gravity with quantum physics. Hawking continued working on the problem almost up until his death, but with no clear outcome.

As for the title of Hawking’s paper, seeing actual black-hole explosions is a possibility that astronomers take seriously. Large black holes act like very cold bodies, but smaller ones are hotter, which makes them shrink faster; and the particles they shed should become more and more energetic, reaching a culmination when the black hole disappears. Hawking showed that ‘ordinary’ stellar-mass black holes, which form when massive stars collapse in on themselves at the end of their lives, take many times longer than the age of the Universe to get to this point. But, in principle, black holes with a range of smaller masses could have formed from random fluctuations in the density of matter during the first moments after the Big Bang. If a primordial black hole of the right mass were to fizzle into non-existence somewhere near the Solar System, it could be picked up by neutrino and γ-ray observatories.

Astronomers have not seen any black holes explode so far, but they are still on the lookout5. Such an observation would have certainly earned Hawking the Nobel Prize that eluded him all his life. As it is, the questions produced by his simple, inquisitive paper title look set to nourish the intersection between cosmology and physics for a good few years yet.

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Baby quasars: Growing supermassive black holes

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The James Webb Space Telescope makes one of the most unexpected findings within its first year of service: A high number of faint little red dots in the distant Universe could change the way we understand the genesis of supermassive black holes. The research, led by Jorryt Matthee, Assistant Professor in astrophysics at the Institute of Science and Technology Austria (ISTA), is now published in The Astrophysical Journal.

A bunch of little red dots found in a tiny region of our night sky might be an unexpected breakthrough for the James Webb Space Telescope (JWST) within its first year of service. These objects were indistinguishable from normal galaxies through the ‘eyes’ of the older Hubble Space Telescope. “Without having been developed for this specific purpose, the JWST helped us determine that faint little red dots-found very far away in the Universe’s distant past-are small versions of extremely massive black holes. These special objects could change the way we think about the genesis of black holes,” says Jorryt Matthee, Assistant Professor at the Institute of Science and Technology Austria (ISTA), and lead author of the study. “The present findings could bring us one step closer to answering one of the greatest dilemmas in astronomy: According to the current models, some supermassive black holes in the early Universe have simply grown ‘too fast’. Then how did they form?”

The cosmic points of no return

Scientists have long considered black holes a mathematical curiosity until their existence became increasingly evident. These strange cosmic bottomless pits could have such compact masses and strong gravities that nothing can escape their force of attraction-they suck in anything, including cosmic dust, planets, and stars, and deform the space and time around them such that even light cannot escape. The general theory of relativity, published by Albert Einstein over a century ago, predicted that black holes could have any mass. Some of the most intriguing black holes are the supermassive black holes (SMBHs), which could reach millions to billions of times the mass of the Sun. Astrophysicists agree that there is an SMBH at the center of almost every large galaxy. The proof that Sagittarius A* is an SMBH in the center of our Galaxy with over four million times the Sun’s mass, earned the 2020 Nobel Prize in Physics.

Too massive to be there

However, not all SMBHs are the same. While Sagittarius A* could be compared to a sleeping volcano, some SMBHs grow extremely rapidly by engulfing astronomic amounts of matter. Thus, they become so luminous that they can be observed until the edge of the ever-expanding Universe. These SMBHs are called quasars and are among the brightest objects in the Universe. “One issue with quasars is that some of them seem to be overly massive, too massive given the age of the Universe at which the quasars are observed. We call them the ‘problematic quasars,'” says Matthee. “If we consider that quasars originate from the explosions of massive stars-and that we know their maximum growth rate from the general laws of physics, some of them look like they have grown faster than is possible. It’s like looking at a five-year-old child that is two meters tall. Something doesn’t add up,” he explains. Could SMBHs perhaps grow even faster than we originally thought? Or do they form differently?

Small versions of giant cosmic monsters

Now, Matthee and his colleagues identify a population of objects that appear as little red dots in JWST images. Also, they demonstrate that these objects are SMBHs, but not overly massive ones. Central in determining that these objects are SMBHs was the detection of Hα spectral emission lines with wide line profiles. Hα lines are spectral lines in the deep-red region of visible light that are emitted when hydrogen atoms are heated. The width of the spectra traces the motion of the gas. “The wider the base of the Hα lines, the higher the gas velocity. Thus, these spectra tell us that we are looking at a very small gas cloud that moves extremely rapidly and orbits something very massive like an SMBH,” says Matthee. However, the little red dots are not the giant cosmic monsters found in overly massive SMBHs. “While the ‘problematic quasars’ are blue, extremely bright, and reach billions of times the mass of the Sun, the little red dots are more like ‘baby quasars.’ Their masses lie between ten and a hundred million solar masses. Also, they appear red because they are dusty. The dust obscures the black holes and reddens the colors,” says Matthee. But eventually, the outflow of gas from the black holes will puncture the dust cocoon, and giants will evolve from these little red dots. Thus, the ISTA astrophysicist and his team suggest that the little red dots are small, red versions of giant blue SMBHs in the phase that predates the problematic quasars. “Studying baby versions of the overly massive SMBHs in more detail will allow us to better understand how problematic quasars come to exist.”

A “breakthrough” technology

Matthee and his team could find the baby quasars thanks to the datasets acquired by the EIGER (Emission-line galaxies and Intergalactic Gas in the Epoch of Reionization) and FRESCO (First Reionization Epoch Spectroscopically Complete Observations) collaborations. These are a large and a medium JWST program in which Matthee was involved. Last December, the Physics World magazine listed EIGER among the top 10 breakthroughs of the year for 2023. “EIGER was designed to study specifically the rare blue supermassive quasars and their environments. It was not designed to find the little red dots. But we found them by chance in the same dataset. This is because, by using the JWST’s Near Infrared Camera, EIGER acquires emission spectra of all objects in the Universe,” says Matthee. “If you raise your index finger and extend your arm completely, the region of the night sky we explored corresponds to roughly a twentieth of the surface of your nail. So far, we have probably only scratched the surface.”

Matthee is confident that the present study will open up many avenues and help answer some of the big questions about the Universe. “Black holes and SMBHs are possibly the most interesting things in the Universe. It’s hard to explain why they are there, but they are there. We hope that this work will help us lift one of the biggest veils of mystery about the Universe,” he concludes.

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Workplaces are failing Black women; they must do better

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As an academic who studies social policy and race, I was not surprised to learn of the resignation of Claudine Gay, former president of Harvard University in Cambridge, Massachusetts, who was the first Black woman to have the role.

I was not shocked by the news that Antoinette Candia-Bailey, an administrator at Lincoln University of Missouri in Jefferson City, had died by suicide, amid concerns of harassment and a lack of support from senior colleagues.

Black female scholars and staff members continue to face exclusion and challenges in academia that often remain ignored.

A few years ago, I gave evidence to the Women and Equalities Committee of the UK Parliament at a session on racial harassment at British universities. I shared the example of a Black woman who had been driven out of her institution and treated so abysmally in the process that she had considered taking her life. To my knowledge, no one at that university has been held to account. I also outlined findings from my study of the career experiences of UK Black female professors who described being passed over for promotion in favour of less-qualified white faculty members, being undermined by white female colleagues who otherwise champion feminism, and having to take deliberate steps to protect their well-being (see go.nature.com/43bv84e).

Why Juneteenth matters for science

I do not stand outside the issues I research. I have long been aware of the opaqueness with which institutions interpret and apply policies, and how this benefits certain groups but disadvantages others. I was so scarred by my previous experiences of applying for academic posts that, at one point, I took to walking around with the promotion criteria for senior lecturer at that university in my pocket to help me decide which work requests I should commit my time to.

I submitted my application to the university with confidence. It met the listed criteria for senior lecturer and many for the level above that. Yet my application did not pass even the first of three review panels. The amount of research funding I had secured was deemed not to be ‘sufficient’. There had been no mention of this in the guidelines. Introducing subjective language such as ‘sufficient’ risks inviting bias into the process.

The low representation of Black women in senior posts cannot be attributed merely to a pipeline issue. Resolving poor retention — by creating environments in which Black women can flourish — is crucial. This goes beyond ‘dignity at work’ statements, ‘diversity and inclusion’ policies and lunchtime yoga sessions. Black women are more likely than white women to die in childbirth (see go.nature.com/3pcukgs) and to have fibroids, and less likely to receive adequate pain treatment from health-care professionals. This means that Black women are often facing these challenges while also dealing with workplace difficulties, such as unsupportive line managers, isolation and the weight of academic service.

Existing at the intersection of being Black and a woman is exhausting.

Colleagues keen to demonstrate their solidarity with Black women might, at a minimum, commit to the below actions. Although these principles should be considered good practice, in general, not adopting them could have a disproportionately large effect on Black women, because of the existing challenges we face.

Equity is more than a buzzword

Be respectful of our time. I often receive requests — some even outside work hours — with unrealistic deadlines, without apology or explanation. When asking us to do something, acknowledge that we already have other commitments.

Pay us. Asking people to work for free implies that you do not value them or their expertise. If your business has a healthy bank balance or you are charging people huge sums to attend your conference, it is not reasonable to hide behind honorariums as a rationale for not paying contributors.

Sponsor Black women. In many ways, progress in academia — and in wider society — depends on who you know. While we continue to fight for recognition by and access to institutions, you can help us by citing our work and championing us.

Be transparent and honest in communications. If you can’t accommodate a request or commit to a project, say so. Avoid ambiguous language that requires us to read between the lines.

White women: feminism means Black women, too. In my study, Black professors described how white women excluded them through behaviours similar to those that the same women criticized in men. Working in solidarity with Black women means attending to the ways your racialized identity affords you privileges.

Unless such actions are integrated into workplace policies and practices, and unless people are held accountable, Black women will continue to be on the receiving end of disrespectful, exclusionary behaviours.

Black women must be vigilant about their health and well-being, and put firm boundaries in place to protect themselves. We must support and champion each other and be wary of narratives based on other people’s ideas of success, such as being called a role model, or “if you see it, you can be it”. Our challenge is not one of individual motivation, aspiration or achievement, but of the need for radical change that breaks down the barriers that, despite our efforts, continue to impede our collective success.

Photo credit: Stuart Simpson for Penguin Random

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The author declares no competing interests.

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A Guide to Fixing the iPhone Black Screen

iPhone Black Screen

This guide is designed to show you how to fix the black screen problem on your iPhone, we cover a wide range of things that you can try to resolve the issue on the iPhone. Apple’s iPhones are marvels of modern technology, but even they aren’t immune to occasional glitches.

One of the most disconcerting issues iPhone users can encounter is the dreaded “black screen of death.” Your phone might seem completely unresponsive, leaving you in the dark about the cause and potential solutions. Fear not! This guide will delve into the common reasons behind an unresponsive iPhone screen and provide a well-structured troubleshooting process to help you revive your device.

Understanding the Causes

A black screen on your iPhone could be triggered by various factors.

Here are the most common culprits:

  • Software Crash: Apps can occasionally malfunction and freeze, causing your iPhone’s display to go black.
  • A system-wide software glitch can also be at play.
  • Hardware Issues: Problems with your phone’s display, battery, or other hardware components can lead to a black screen.
  • Drained Battery: A completely drained battery can mimic a black screen with no visible signs of life.
  • Outdated iOS: An outdated operating system can have bugs and compatibility issues that might cause unexpected behavior, sometimes including display problems.

Troubleshooting Steps: Your Path to Reviving Your iPhone

Let’s walk through a step-by-step approach designed to address all the potential causes systematically:

1. Basic Check: Is Your iPhone On?

  • Double-check by pressing the Side (or Power) button. Do you hear any sounds or feel vibrations? If you do, your screen is likely the issue. If there are no signs of life, proceed to the next step.

2. Charge Your Battery

  • A fully drained battery is a basic but surprisingly common reason behind an unresponsive iPhone.
  • Connect your iPhone to a charger and let it charge for at least 30 minutes.

3. Force Restart

  • A force restart is often the cure for minor software glitches.

The instructions vary depending on your iPhone model:

  • iPhone 8 and later (including SE 2nd and 3rd gen): Press and quickly release the Volume Up button, then the Volume Down button. Finally, press and hold the Side button until the Apple logo appears.
  • iPhone 7 and 7 Plus: Press and hold both the Volume Down and the Side button until you see the Apple logo.
  • iPhone 6s and earlier: Press and hold the Home and the Side (or Top) button until the Apple logo appears.

4. Connect to a Computer and Check for Updates

  • Connect your iPhone to a computer and open iTunes (on older macOS versions) or Finder (on newer macOS versions).
  • Check if it recognizes your iPhone.
  • If it’s recognized, see if there are any available iOS updates. If there are, update your iPhone.

5. Recovery Mode

If the previous steps haven’t resolved the issue, try putting your iPhone into Recovery Mode and restoring it. Keep in mind this will erase all data on your iPhone:

  • Connect your device to a computer and open iTunes/Finder.
  • While connected, follow the force restart steps for your iPhone model. However, don’t release the buttons when the Apple logo appears. Keep holding them until you see the Recovery Mode screen.
  • You will be presented with the option to “Update” or “Restore.” Try “Update” first, as this preserves your data. If that fails, you may need to choose “Restore.”

6. DFU Mode (Last Resort)

  • Device Firmware Update (DFU) Mode is a deeper restore option than Recovery Mode.

Use this with caution as it also erases your data. Instructions are complex and model-specific.

  • You can find detailed DFU instructions on Apple’s support website.

Seeking Professional Help

If none of the above solutions work, it’s likely a hardware issue. At this point, your best bet is to contact Apple Support or visit an authorized Apple Service Provider to diagnose and potentially repair your iPhone.

Prevention is Better than Cure

Here are a few things you can do to reduce the chances of the black screen issue reoccurring:

  • Keep iOS Updated: Update your iPhone regularly to benefit from bug fixes and security patches.
  • Manage Apps: Avoid running too many apps simultaneously, and force close those you’re not using to free up system resources.
  • Protective Gear: Use a sturdy phone case and screen protector to safeguard your iPhone from physical damage.

Summary

While the iPhone black screen can be a frustrating experience, the provided troubleshooting steps offer a high likelihood of resolving the issue for most users. Remember, starting with the basic solutions and progressing through the more advanced ones is the most effective strategy. If all else fails, don’t hesitate to seek assistance from Apple Support or an authorized service provider.

Image Credit: Mateusz Dach

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Pitaka Black Friday Deals, up to 60% off

Pitaka Black Friday Deals

Pitaka offers a range of Black Friday and Cyber Monday discounts on Phone Cases, Watch Bans, and more. Pitaka offers some amazing smartphone and smartwatch accessories, seamlessly blending the realms of technology, materials, craftsmanship, and art. At the heart of their philosophy lies an advanced weaving technology, a cornerstone that enables them to craft sophisticated, user-friendly, high-quality daily accessories. Each product is more than just a practical item; it’s a canvas where modern art meets functionality, telling a story and recording the spirit advocated by PITAKA.

This year, PITAKA is excited to announce their much-anticipated Black Friday & Cyber Monday event. Mark your calendars, as this exclusive shopping extravaganza is on now until November 30th. It’s a rare opportunity for enthusiasts and newcomers alike to experience the unique blend of technology and artistry that PITAKA offers, all at special event prices.

Here are some of the key deals:

  • iPhone Cases + Watch Bands: Save up to $70 (Top Priority Discount)
  • Phone Cases: Up to 60% off
  • iPad Cases:  up to 50% off
  • Watch Band Series: Year-round maximum discounts 25% OFF

You can find out more details about the Pitaka Black Friday and Cyber Monday discounts over at their website and at their Amazon Store at the link below.

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Volvo XC60 Black Edition now available in the UK

Volvo XC60 Black Edition

The new VolvoXC 60 Black Edition is now available in the UK and pricing for the car starts at £54,035, although Volvo will offer the card for an introductory price of £52,285 until the 27th of November 2023.

The car will be available with a choice of three engine options, a B5 petrol, and a T6 and T8 petrol-electric plug-in hybrid options, the first deliveries of this new model are expected in early 2024.

Volvo XC60 Black Edition

The name says it all: this new version is finished exclusively in Onyx Black and features a number of additional black details to give the car its unique look. The Volvo Cars logo, lettering, model and engine emblems, for example, are all in black, as are the 21-inch alloy wheels. The all-black look gives the premium SUV additional sportiness and elegance.

The dark colour scheme continues in the interior: a headliner in charcoal meets partial Nappa leather/textile front sports seats or full Nappa leather front comfort seats, both also in charcoal. The comfort seats feature ventilated upholstery, a backrest massage function and electrically adjustable side support.

You can find out more information about the new Volvo XC60 Black Edition over at the Volvo website at the link below, the car will be available in two trim levels, Plus and Ultimate.

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Samsung Black Friday Deals revealed

Samsung Black Friday Deals

Samsung has announced a range of Black Friday Deals for its various devices and it will be offering discounts on smartphones, tablets, the Samsung Galaxy Watch, Monitors, Samsung Home devices, and much more

Some of the deals include $50 off the Galaxy Buds 2, $100 off the Galaxy Tab A8, $80 off the Galaxy Watch5 Pro Golf Edition, $500 off the Galaxy Book3 Pro 360 and also $500 off the Odyssey Neo G8 Monitor.

The holiday season is here and conversations about pumpkin spice are quickly turning into checking who was naughty or nice.

If you’re a part of the 85% of consumers searching for savings1 and the perfect presents for everyone on your list, look no further. Samsung is here with a sneak peek at some of our favorite upcoming Black Friday deals on tech that seamlessly connects, so you can spend more time focusing on what matters most with the people you love.

Make your wish list, check it twice, and head to Samsung.com to start saving! Whether you’re dreaming of a smarter kitchen to make your holiday cooking a hit, catching up with family and friends or just starting to tackle your “to-do list,” check out our must-have gift ideas to help you “tech” the halls this season

You can find out more details about the various deals that Samsung is offering in its Samsung Black Friday Deals events over at the Samsung website at the link below.

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Bluetti offers awesome Black Friday Deals for 2023

Bluetti Black Friday Deals

Sponsored:

It is almost Black Friday and Bluetti is offering some awesome Black Friday Deals with some great savings and discounts plus a new Bluetti AC200L power station which is designed to be a powerhouse of efficiency and energy innovation.

From the 10th to the 16th of November, BLUETTI’s Early Black Friday Access will give you a range of deals and discounts, a prelude to the electrifying main event — the official Black Friday Sale kicking off on the 17th of November. These dates herald a not-to-be-missed, high-voltage celebration that promises to energize your holiday season.

This is more than just a promotion; it’s an opportunity to empower your life with BLUETTI’s range of power stations, each designed to seamlessly integrate into the fabric of your daily life. Imagine a range that spans from steadfast guardians of your home’s energy needs, ensuring that every unexpected power outage meets an unwavering counterforce, to the nimble, robust companions for your outdoor explorations, promising the essence of modern convenience even in the heart of the wilderness.

Each product in BLUETTI’s lineup is a testament to innovation, reliability, and the joy of energy independence, tailored to cater to the connoisseur of meticulous engineering and the avid adventurer alike. With discounts that resonate with the spirit of giving, BLUETTI invites you to embrace a future where every electrical need is met with a solution as durable as it is dynamic.

Bluetti Home Backup Power Station Deals

The new Bluetti AC200L Portable Power Station

Bluetti AC200L

The new Bluetti AC200L is an updated version of the Bluettio AC200MAx and it comes with a range of new features and upgrades, whilst it has the same capacity, this new model includes a 2,400W output that can soar to 3,600W with its Power Lifting mode. This means you can use a wide range of power-hungry devices and appliances.

Included in the Bluetti AC200L is a new fast charging feature that will let you charge the device in just 2 hours with either 2400W wall charging or 1200W solar charging, it also comes with a UPS feature which has which can switch to backup power in just 20ms and the device is an ideal solution for power outages.

The good news is that the new Bluetti AC200L will go on sale on the 17th of November, pricing will be revealed closer to the launch and Bluetti has said that we can expect an ‘electrifying surprise on the pricing, it will be available from both Amazon and from Bluetti

Bluetti AC300+B300 (with free 220W solar panel): Black Friday Early Access Price $2599

AC300

This advanced modular power unit delivers an output of 3,000 watts, providing ample energy for a range of essential household appliances including refrigerators, microwave ovens, and air conditioning systems. The unit’s scalability is a notable feature, offering the option to integrate between one and four B300 batteries. This modular expansion enables an increase in energy storage capacity from 3,072 watt-hours to an impressive 12,288 watt-hours, catering to varying energy requirements with ease.

Additionally, the unit is fitted with an uninterruptible power supply (UPS) mechanism that guarantees an ultra-rapid transition time of merely 20 milliseconds. This ensures that your domestic environment remains comfortable and illuminated, even in the event of power disruptions

Bluetti AC500 +2*B300S (with free AC500 Home integration Kit): Black Friday Early Access Price $7098

AC500

Should you need even more power then the Bluetti AC500 is designed to meet even the most demanding energy needs with a scalable capacity that extends from 3,072Wh to an impressive 18,432Wh. It incorporates a UPS feature for consistent power delivery and is equipped with the advanced B300S battery, which boasts a self-heating capability.

This ensures reliable operation in cold conditions, maintaining peak performance even at temperatures as low as -20°C, thus offering unparalleled resilience against the challenges of harsh winter weather.

Bluetti EP500 (2,000W/5,100Wh): Black Friday Early Access Price $3999

EP500

If you are looking for an all-in-one power station that is designed to be versatile, then the Bluetti EP500 will fulfill your needs. This power Station has been designed to cater to a diverse range of energy needs, effortlessly powering tools such as drills and saws, as well as kitchen appliances like grills throughout your property. It is the ideal resource for maintaining uninterrupted productivity and leisure activities—even during a power outage, ensuring that events such as an outdoor barbecue can proceed without any problems.

Bluetti Portable Generators for Emergencies and the Outdoors

BLUETTI AC200MAX (2,200W/2,048Wh): Black Friday Early Access Price $1349

AC 200 Max

Enhanced with the option to integrate B230 or B300 batteries, this power system achieves an exceptional capacity of 8,192Wh, streamlining the energy supply for recreational vehicle excursions and cabin residences. Equipped with 16 outlets and versatile charging capabilities, including a 1,400W dual AC and solar charging options, the system ensures comprehensive readiness for a variety of power needs

BLUETTI AC180 (1,800W/ 1,152Wh): Black Friday Early Access Price $669

AC180

The Bluetti AC180 is designed to be a workhorse, it is capable of elevating its output to 2,700 watts in Power Lifting mode, adept at efficiently powering high-consumption appliances such as kettles and hairdryers. It boasts a rapid charging feature with a 1,440-watt input, achieving full capacity in just two hours. Weighing 16 kilograms, its portable design is ideal for a variety of settings, from mobile ventures to supplemental home use,  it’s versatile enough to be utilized virtually anywhere.

BLUETTI AC70 (1,000W/ 768Wh): Black Friday Early Access Price $499

AC70

The Bluetti AC70 weighs in at just 10.2kg, this compact device offers considerable power in a lightweight package. It boasts an efficient charging capability, reaching full charge in approximately 1.5 hours with an 850W AC input. Additionally, the unit is equipped with advanced functionalities, including an uninterruptible power supply (UPS) feature and an intuitive application. You can get an extra $15 discount on the promotional price by using the discount code GG70.

Bluetti Black Friday Deals, Offers and Activities

Bluetti has some awesome deals, rewards, and activities planned, these include Lucky Prize Wheels, Lifestyle Gifts, and exclusives for Bluetti members and some of these will be available from today until the 17th of November.

Lucky Prize Wheels Event:

Between November 9th and 17th, participants are invited to engage with our Lucky Prize Wheels. The probability of securing a win is exceptionally favorable. Upon spinning the wheel, attendees have the opportunity to win an array of premium BLUETTI rewards including the EB3A portable power station, PV120 solar panel, and an exclusive BLUETTI outdoor gift box. Additional prizes comprise $50 and $100 discount vouchers, as well as branded merchandise such as BLUETTI hoodies and caps.

Triple BLUETTI Bucks Reward Program:

During the period of November 9th to 17th, Bluetti customers will collect three times the standard BLUETTI Bucks on each purchase. This reward multiplier increases to five times on Black Friday. Accumulated Bucks can be exchanged for a selection of rewards, including BLUETTI coupons, lifestyle merchandise, and gift cards, among other exclusive items.

Here is a roundup of what is on offer:

  • Engage with the Lucky Prize Wheels event for a chance to win prizes, including the EB3A, between November 9th and 17th.
  • Accumulate three times the BLUETTI Bucks on each purchase within the same period.
  • Utilize available coupons when placing your orders.
  • Receive complimentary gifts on purchases exceeding $1,500.
  • Take part in our social media giveaways for additional rewards.
  • Recommend BLUETTI to a friend and receive an additional 5% discount on your purchase.

BLUETTI’s Black Friday Event offers more than just exceptional savings. Featuring an extensive selection of power station promotions and engaging events, BLUETTI is prepared to enhance your Black Friday experience. Seize this opportunity to enrich your lifestyle with BLUETTI’s innovative products.

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Noctua all black NH-D9L and NH-L9x65 CPU coolers now available

Noctua all black NH-D9L and NH-L9x65 CPU coolers next to its packaging

 

Noctua, a renowned name in the world of PC cooling solutions, has recently broadened its chromax.black line with all-black versions of the NH-D9L and NH-L9x65 CPU coolers. The new models are an aesthetic upgrade to the original versions, offering an all-black design that is sure to appeal to users who prefer a sleek, uniform look for their small form factor  PC systems.

The new models are identical to their original counterparts in all aspects except for their color. They feature black coated heatsinks, black fans with black anti-vibration pads, black fan clips, and black mounting parts. This monochrome design approach extends the chromax.black line’s appeal to a wider audience, especially those who value aesthetics as much as performance in their computer systems.

The optimized coating process used for these coolers not only contributes to their striking appearance but also ensures quiet cooling performance. This is a testament to Noctua’s commitment to delivering products that balance visual appeal and functionality.

Noctua Black CPU coolers

Other articles you may find of interest on the subject of Noctua cooling solutions :

The NH-D9L chromax.black is designed for efficiency with a low-profile height of only 110 mm. This makes it an ideal choice for compact Mini-ITX and Small Form Factor cases where space is a premium. Despite its compact size, the NH-D9L does not compromise on performance, offering efficient cooling for high-performance CPUs.

On the other hand, the NH-L9x65 chromax.black offers a middle ground between the larger NH-L12 series and the ultra-compact NH-L9i and NH-L9a series. With a height of 65 mm and four heatpipes, this cooler is designed to deliver efficient cooling performance in a compact form factor.

Both the NH-D9L and NH-L9x65 models feature optimized NF-A9 and NF-A9x14 premium fans. These fans support fully automatic speed control via PWM, enabling them to run quietly while delivering optimum cooling performance. This makes these coolers an excellent choice for users who prefer a quiet computing environment.

The coolers come with the professional SecuFirm2 multi-socket mounting system, compatible with both Intel and AMD CPUs. This system ensures easy and secure installation, reducing the risk of damage during the installation process. Additionally, the coolers come with Noctua’s renowned NT-H1 thermal compound for improved heat transfer and a 6-year manufacturer’s warranty for added peace of mind.

The suggested retail prices for these new additions to the chromax.black line are EUR 74.90 / USD 74.90 for the NH-D9L chromax.black and EUR 69.90 / USD 69.90 for the NH-L9x65 chromax.black. These prices reflect Noctua’s commitment to offering high-quality cooling solutions at competitive prices.

The all-black NH-D9L and NH-L9x65 CPU coolers are a welcome addition to Noctua’s chromax.black line. They offer an appealing blend of aesthetics and performance, making them a great choice for users who want to build a stylish, high-performance Small Form Factor system. These coolers reaffirm Noctua’s position as a leading provider of high-quality, efficient, and aesthetically pleasing cooling solutions.

Source : Noctua

Filed Under: Hardware, Top News





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