Our collection on
#ArtificalIntelligence
explores how this rapidly developing technology is already being used in society, and ponders the ethical questions around how it should be used in the future.
The iconic physicist Richard Feynman was born 100 years ago today on 11 May 1918. Find out more on the Physics World blog about how the centenary of his birth is being celebrated around the world.
How do you make a 6.5 m mirror fit inside a 4.57 m Ariane 5 rocket fairing without being too heavy to launch into space? For
@NASAWebb
it's complicated.
Q: What went through your mind when you saw the evidence of the black hole at the centre of the Milky Way?
A: "The first thing was doubt. You have to prove to yourself that you're really seeing what you think you're seeing." - Andrea Ghez
#PhysicsNobel
#NobelPrize2020
The supermassive black hole at the heart of M87 is nearly the size of our Solar System. Its also an active black hole, powering huge jets & having a dynamic impact across its host galaxy
#EHTblackhole
@EHTelescope
Physicists will find it shocking, but there are plenty of people around the world who genuinely believe the Earth is flat. Explore why such views are increasingly taking hold, and the ways in which the physics community can best respond
Anne L’Huillier was teaching when she got the phone call from the
#NobelPrize
committee telling her she won. "The last half hour of my lecture was a bit difficult to do," she admits, but she went back to it anyway. "Teaching is very, very important."
Is this the first year that the Nobel Prizes for Physics, Chemistry *and* Peace have all gone to physicists?!
The
#NobelPrize
for Narges Mohammadi is a reminder, if anyone needed it, that physics students go on to do amazing things - in physics and outside it.
As a young physics student Mohammadi distinguished herself as an advocate for equality and women’s rights. In 2011 she was arrested for the first time and sentenced to many years of imprisonment for her efforts to assist incarcerated activists and their families.
#NobelPrize
Lise Meitner was nominated for a Nobel Prize 48 times by 26 different scientists. So why didn't she win? The final entry in our "Overlooked for the Nobel" series considers a complex case of prejudice and politics.
.
@jesswade
says that we must challenge outdated stereotypes that have made generations of innovative and talented young women believe they won’t be successful physicists and engineers
Alan Turing, the scientist famous for helping to crack the wartime Enigma code and pioneering the modern computer, has been chosen to appear on the Bank of England’s new £50 note.
The Planck mission gave us the most precise value of the Hubble constant to date, but other measurements done through different methods don't seem to agree with Planck's value. So what's going on with the expansion rate of the universe?
A theory of quantum gravity that describes the universe as beginning in a “Big Bounce” rather than a Big Bang has succeeded in explaining several anomalies in the cosmic microwave background, say physicists
@penn_state
The cores of some neutron stars may be dense enough to contain free quarks, and gravitational-wave data could confirm it, say researchers
@helsinkiuni
and
@CERN
.
Paul Howarth is the CEO of UK’s National Nuclear Laboratory and our guest in this episode of the Physics World Weekly podcast. Click on the image to hear his take on small modular reactors and much more.
We thought we knew how fast the cosmos is expanding, but recent measurements have cast doubt on our understanding. It has triggered a debate that could lead to new physics
#Hubble
#astronomy
#space
A thermal transistor that uses an electric field to control the flow of heat could cool computer chips or even reveal how living cells regulate heat at the molecular level.
Still bored of the lockdown? Try this fun Physics World trivia quiz on all things space and astronomy to mark the 30th anniversary of
@NASAHubble
#space
#astronomy
#quiz
Next-gen atomic clocks run at optical frequencies. The best of them can remain precise to within a second after 50 billion years. And soon, for the first time, you’ll be able to buy one of your very own.
The 200-year-old mystery of how the mineral dolomite forms may have finally been solved by a combination of computer simulations and electron microscopy. Click on the image to read more
A new image showing magnetic fields surrounding the supermassive black hole M87* has been unveiled by scientists working on the Event Horizon Telescope
Physicists
@MIT
@Harvard
have come up with a way of making photons repel each other by sending them through an ultracold atomic gas. This astonishing feat could lead to the creation of “photon crystals”
The solar system may have been formed in a long-ago collision between the Milky Way and its orbiting companion the Sagittarius dwarf galaxy according to researchers
@IAC_Astrofisica
"By putting a fourth detector in Japan and a fifth detector in India, we’ll be able to rapidly determine good sky localization for gravitational-wave events anywhere in the sky. This is a wonderful thing."
Reed College in the US is a small, prestigious and progressive liberal-arts institution. Yet within its open campus, is a nuclear reactor run by undergraduates - the only one in the US. Click below to read more about it
If you stack five layers of graphene together, it becomes multiferroic, exhibiting both unconventional magnetism and an exotic electronic behaviour dubbed “ferro-valleytricity”. These properties could be exploited in graphene information-storage devices.
Researchers at CERN and the University of Tokyo have independently laser-cooled clouds of positronium. The breakthrough should make it easier to make precision measurements of the properties of antimatter and allow researchers to produce more antihydrogen.
“This would be a sensational breakthrough. For the time being, though, it is simply sensational.” - Nigel Hussey of
@BristolUni
on claims that researchers in Korea have discovered the first room-temperature, ambient-pressure superconductor.
During the pandemic, we relied heavily on the internet and phones. But what if they all went offline? That's what's imagined in "Sigh No More", one of the sci-fi stories within the new anthology "Communications Breakdown". Click below to read our review
Is there a ninth planet or a primordial black hole lurking at the edge of our Solar System? Some astronomers argue we should send a fleet of tiny space probes to find out. The Physics World Stories podcast examines the mysterious case of
#Planet9
A new coin celebrating the life of Stephen Hawking is being withdrawn because an error has been discovered in the equation for black-hole entropy that appears on the 50p piece.
Gravitational waves from the most massive merger of two black holes ever seen have been detected by the LIGO–Virgo observatories. It involves the creation of a black hole with a mass of about 142 Suns.
"I'm thrilled to receive the prize and I take very seriously the responsibility of being the fourth woman to win the Nobel Prize [in physics]. I hope I can inspire other young women into the field. It's a field that has so many pleasures." - Andrea Ghez
#NobelPrize2020
Sometimes the best progress in science takes place when people from different groups and different nations come together. There's no better example than the centenary of the prediction of Bose-Einstein condensation, say Robert P Crease and Gino Elia.
The
@EHTelescope
has revealed the first-ever images of the supermassive black hole that lies at the heart of the huge M87 galaxy - find out what it means to spot the
#EventHorizon
and what it means for astronomy at large.
New calculations that combine quantum mechanics with Einstein’s general theory of relativity suggest that gravastars could end up nested inside one another like a Russian Matryoshka doll
Speakers at Acoustics 2023 Sydney shared the latest innovations in ultrasound technologies, including pain-free vaccination and monitoring muscle dynamics in real time. Click on the image to read more.
NASA’s Perseverance rover has landed on Mars, completing its seven-month journey to the red planet. It will search for signs of ancient microbial life and collect rock samples to be returned to Earth later in the decade
@NASAPersevere
#CountdownToMars
Science can often be tribal. In cosmology, there's a heated divide over whether you’re for dark matter or modified Newtonian dynamics (MOND). Hear from scientists on opposing sides of this debate in the latest Physics World Stories podcast
Koshiba was instrumental in the construction of the Kamiokande experiment -- a huge neutrino detector located 1000 metres underground in a lead and zinc mine in central Japan
Neutrinos produced by the elusive carbon–nitrogen–oxygen (CNO) cycle in the Sun have been observed for the first time – confirming a theory first proposed over 80 years ago.
Does quantum mechanics play a role in consciousness, or are the two areas linked only because they are complex? There is still much to decipher in the new and contentious field of quantum biophysics
A newly-discovered mechanism known as microtube implosion could make it possible to generate magnetic fields 1000 times stronger than any yet seen in the laboratory, according to researchers
@osaka_univ_e
in Japan.
#plasmas
Physicists working on the ATLAS experiment at CERN have observed entanglement between pairs of top quarks for the first time – a finding that shatters the entanglement energy record by 12 orders of magnitude [click to read]:
#Quantum
mechanics is one of the most successful theories in modern physics, but questions about its interpretations linger. Explore the arguments first put forth by John Bell three decades ago, and the evidence accumulated since
The global inequity in access to radiation therapy is a systemic problem that's not going away anytime soon. Read about how radiotherapy equipment maker Elekta is working to address this disparity.
Designing for diversity – what makes people pick up a science magazine? Jemima Coleman and Wendy Sadler argue science magazines have a responsibility to ensure that science is accessible and inclusive for all. Click below to read more.
Complex numbers are essential to achieve the most accurate quantum-mechanical description of nature, according to experiments done by two independent teams of physicists.
A team led by Grégoire Courtine, Jocelyne Bloch and Guillaume Charvet has won the Physics World 2023 Breakthrough of the Year award for developing a brain–computer interface that allowed a paralysed man to walk. Click on the image to read more.