We now publish
@ResearchOrgs
open persistent identifiers with our authors’ affiliations — standardizing institutional
#metadata
across papers and making it discoverable with any tool, including
@CrossrefOrg
.
Learn more:
#OpenScience
Have you seen today’s
#GoogleDoodle
? The illustration celebrates mathematician Olga Ladyzhenskaya's 97th birthday. Her work in fluid dynamics led to the development of equations used in meteorology, aeronautics, medicine, and more.
#WomensHistoryMonth
It's official!
The kilogram is no longer defined by a piece of metal in Paris. The kg and other SI units are now rooted in precise quantum constants, pushing our precision to new heights . via
@voxdotcom
#WorldMetrologyDay
#OTD
in 1595, astronomer Johannes Kepler had an epiphany: There might be a geometric underpinning to the universe. Learn more about the idea that helped Kepler bridge the gap between
#physics
and
#astronomy
in
#APSNews
: .
#PhysicsHistory
Due to rapidly escalating health concerns relating to the spread of the coronavirus disease (COVID-19), the 2020 APS March Meeting in Denver, CO, has been canceled. Please do not travel to Denver to attend the March Meeting. More information will follow shortly.
#apsmarch
Don't try this at home. Physicists accidentally set the world record for strongest indoor magnetic field and blew up part of their newly-built equipment in the process. 🧲 🎆 via
@IEEESpectrum
APS utterly condemns racism, and is horrified and deeply saddened by the killings of George Floyd, Ahmaud Arbery, and many other Black people. APS is committed to building a diverse and inclusive physics community. Statement:
Congratulations to the entire
@ehtelescope
collaboration on successfully imaging a black hole! Let's celebrate the hard work of this diverse team of scientists. via
@hfalcke
#EHTBlackHole
The Physical Review Journals will now give authors the opportunity to list their pronouns when publishing with us. We believe in a respectful, inclusive, and equitable environment that ensures everyone the opportunity to be successful
#LGBTQSTEMDAY
APS congratulates the 2021
@NobelPrize
Laureates in Physics–jointly awarded to Syukuro Manabe, Klaus Hasselmann and Giorgio Parisi “for groundbreaking contributions to our understanding of complex physical systems.”
APS leadership is outraged by and categorically condemns
@ICE
’s shameful move to cancel F-1 and M-1 visas for students studying off-campus due to the
#COVID19
pandemic.
Philip Warren Anderson, condensed matter physicist, Nobel Laureate, and demystifier of diverse fields of scholarship, passed away on March 29 at the age of 96. Read more on his legacy in APS News:
#LightDay2021
honors a pivotal
#PhysicsHistory
moment. Working with Charles Asawa, Theodore Maiman built a humble device from synthetic ruby.
#OnThisDay
in 1960, it produced a burst of coherent light—becoming the world’s first working
#laser
Theoretical physicist Geoff Penington (
@quantum_geoff
) has won the 2024 APS Valley Prize for his groundbreaking work in quantum gravity. “We just keep being surprised by how much gravity knows," he says. Read more in
#APSNews
: .
🏳️🌈 Regardless your sexual orientation and gender identity, you belong in physics, and we’re proud to have you. Each and every day, let’s work to make science more inclusive.
#LGBTSTEMDAY
🏳️🌈
#OTD
in 1687, Isaac Newton published Principia, a three-volume work containing his laws of motion and universal gravitation. Discover why it is considered one of the most important works in
#science
in
#APSNews
: .
#PhysicsHistory
Edward Bouchet was the first African American PhD physicist and the sixth person ever to receive a PhD in physics from an American university. He went on to educate & inspire others as a science teacher at a school for black students.
#BlackHistoryMonth
Phase transitions are everywhere. On this day in
#PhysicsHistory
, we celebrate Kenneth G. Wilson, who made critical discoveries in quantum field theory and particle physics.
Congratulations to 2019
@NobelPrize
in Physics recipients James Peebles “for theoretical discoveries in physical cosmology”, and Michael Mayor and Didier Queloz “for the discovery of an exoplanet orbiting a solar-type star.” Stay tuned for more updates.
First a Bridge Program Graduate and now a
@NASAGoddard
Astrophysicist, Laura D. Vega has her eyes on the stars ( the pulsating giants and red dwarfs, to be specific). Learn more about her in
#APSnews
: .
Today in
#PhysicsHistory
, 1969: Neil Armstrong took "one small step for man; one giant leap for mankind" as he became the first person to set foot on the Moon.
The American Physical Society (APS) condemns the invasion of Ukraine and is gravely concerned about its impact. APS stands in solidarity with the Ukrainian physics community, Ukrainian scholars, and all citizens of Ukraine. Read the full statement.
In the wake of the assassination of an Iranian nuclear physicist, APS calls on all governments to condemn the use of violence and terror against scientists.
Just in: The
@UN
has proclaimed 2025 as the International Year of Quantum Science and Technology. This year-long, worldwide initiative will celebrate
#QuantumScience
progress and its importance to
#SustainableDevelopment
worldwide.
Learn more:
#IYQ2025
In May of 1932, James Chadwick reported the discovery of the
#neutron
and was awarded the Nobel Prize for his discovery in 1935. Learn more in
#PhysicsHistory
:
Lise Meitner, alongside her nephew Otto Frisch, revolutionized nuclear physics in 1938 through the startling realization that a uranium nucleus had split in two, leading to the discovery of nuclear fission.
#WomenInScienceDay
#ICYMI
: In a new study shows that submerged planar jets of viscoelastic fluid generates a state of elasto-inertial turbulence (EIT) with drastic different features to their Newtonian counterpart. See their striking experiments and analysis in
#PRfluids
: .
Phase transitions can be found in almost every aspect of our daily lives, from something as simple as melting ice to water boiling. Today we recognize and remember Kenneth Wilson, winner of the
@NobelPrize
for his work on phase transitions:
#PhysicsHistory
Nobel Laureate Chandrasekhara Raman was born on this day in 1888. Not only did Raman discover the scattering effect named for him, he also advanced science in India by establishing scientific institutions, academies, and journals. via
@PhysicsToday
Opinion: Biological
#Physics
is coming of age! Once an awkward confrontation between disciplines, now
#BiologicalPhysics
is showing that life is not just a mess: .
#APSnews
James Clerk Maxwell (born in June 190 years ago) proposed the “demon” 😈—one of the trickiest, most famous evasions of the laws of
#thermodynamics
. A statistical mechanics pioneer best known for his equations of electricity and magnetism.
#PhysicsHistory
In May of 1618, astronomer Johannes Kepler laid out a "music of the spheres" in his treatise Harmonices Mundi, published in 1619, suggesting that the planets of the solar system produced tones as they orbited the sun. Discover more in
#PhysicsHistory
: .
Here's a fun
#physics
experiment/party trick you can try at home. Just grab some hot cocoa mix, a mug and a spoon!
Learn more here:
#HappyThanksgiving
#TBT
A theorem published by Emmy Noether 100 years ago not only launched abstract algebra, but also linked symmetry & conservation in physics. Take a journey from the simplest understanding to the complex realities of Noether's theorem with
@Perimeter
:
We will be providing an option for
#apsmarch
presenters to share their research. Or if you're creating a site, hashtag, or other option, please share it with us via the form.
Using household items or an internet connection, it’s possible to turn your house into a DIY-lab and spark excitement about physics with kids! Read more in this month's APS News:
Around 500 BC, most ancient Greeks believed that Earth was round, not flat. They had no idea how big the Earth 🌎 was until about 240 B.C., when Eratosthenes devised a clever method of estimating its circumference. Find out how:
#PhysicsHistory
The world's first BEC was achieved at 10:54 AM on June 5, 1995 in a laboratory
@JILAscience
, a joint institute of
@CUBoulder
and
@NIST
. Measuring about one fifth as thick as a sheet of paper, the BEC formed inside a carrot-sized glass cell.
#PhysicsHistory
How fast is the speed of light? ⚡️💡☀️ For many years it wasn’t known. Then in July 1849, French scientist Armand-Hippolyte-Louis Fizeau published a measurement of light's speed on Earth within ~5% of today's numbers. Find out how:
#PhysicsHistory
#FBF
Mathematical physicist Roger Penrose and colleagues at the
@UniofOxford
propose that our universe is one instance in a cosmic cycle of birth and extinction.
@PhysicsWorld
covers the controversial new theory.
“Physics is made up of many parts. It used to be thought that there’s one genius who starts everything. It doesn’t work that way.” says Dr. Elliott Lieb, the 2022 APS Medalist for Exceptional Achievement in Research. Watch more:
APS and 16 other scientific societies today filed an amicus brief supporting the lawsuit brought by
@Harvard
and
@MIT
seeking to block
@ICEgov
from canceling visas of international students unable to take in-person classes because of the pandemic.
In January 1998, scientists discovered that the universe's expansion is accelerating, not slowing down! This means galaxies are getting further apart faster and faster over time. Learn why in
#PhysicsHistory
: .
On
#NationalDoughnutDay
, we're celebrating all doughnut-shaped things, especially the M87 image from
@ehtelescope
. Here's a handy guide to this supermassive space 🍩.
#OTD
in 1965, physicist Roger Penrose cracked the cosmic code, proving mathematically that black holes are inevitable consequences of Einstein's general theory of relativity! Learn more about his groundbreaking work in
#PhysicsHistory
: .
#OTD
in 1942, the first self-sustained nuclear chain reaction was achieved by Enrico Fermi and his team, leading to the controlled release of
#NuclearEnergy
. Delve into the details of this groundbreaking achievement in
#PhysicsHistory
: .
Congratulations APS members Alain Aspect, John F. Clauser and Anton Zeilinger on being awarded the
@NobelPrize
in Physics “for experiments with entangled photons, establishing the violation of Bell inequalities and pioneering quantum information science.” .
Isaac Newton published his masterwork the Principia
#OTD
in 1687. During the 1660s plague, Newton made several key findings, including that every particle of matter attracts every other particle. Learn more:
#PhysicsHistory
(Photo by K. Mitch Hodge)
Registration is now open for virtual
#apsapril
, which will be held online April 18 - 21. Attendance is free of charge and open to APS members and non-members.
Two independent teams of researchers recently released results on the quantum teleportation of qutrits, which could be used in future quantum networks. via
@sciam
Congratulations to 2019
@NobelPrize
in Chemistry recipients John B. Goodenough (an APS Fellow), M. Stanley Whittingham, and Akira Yoshino for the development of lithium-ion batteries. Stay tuned for more updates.
Arno Penzias and Robert Wilson thought 🐦 pigeon droppings had interfered with their readings at
@BellLabs
. What they had measured was the cosmic microwave background! Research that helped cement the
#BigBangTheory
and won a Nobel.
#PhysicsHistory
Light waves or particles? In 1801, Thomas Young's double-slit experiment showed light acting like a wave, creating a bright & dark pattern. This was a major clue in the wave-particle duality mystery. Discover more in
#PhysicsHistory
: .
📷 Jordgette
For the first time, scientists have captured a form of quantum entanglement, where two particles share physical states for an instant. Spooky indeed. via
@BBCNews
Happy birthday to the Cavendish Laboratory!
@DeptofPhysics
opened
#OnThisDay
in 1874 and has produced some 30
@NobelPrize
. Its namesake Henry Cavendish, an 18th-century nobleman, discovered hydrogen and the Earth's density. Learn the
#PhysicsHistory
:
#OTD
in 1920, chemist Rosalind Franklin was born. Her work in X-ray crystallography led to the discovery of the DNA double helix, and helped us understand the small scale structures of RNA, viruses, graphite, and more.
#WomenInSTEM
The British physicist Henry Moseley, who uncovered a precise mathematical relationship between an element’s x-ray spectrum and its atomic number, was killed on August 10, 1915 while serving in the
@Proud_Sappers
. He was 27.
#PhysicsHistory
On this day in 1868,
#helium
was discovered during a solar eclipse. Identified from solar prominences, this new element was named after Helios, Greek god of the sun. Learn more about this bright spot 🌞in
#PhysicsHistory
: .
Tomorrow we join
@UNESCO
in celebrating the International Day of Light!
Cherry Murray and Nick Treanor
@PhysicsMagazine
reflect on some of the technologies and knowledge made possible by fundamental
#physics
research:
#LightDay2021
🎉 Congratulations to the 2023 PhysTEC National Teacher of the Year, Joe Cossette! Joe graduated from the University of Minnesota & teaches at Minnetonka High School. Learn more about Joe & this year's top physics teachers:
Theoretical physicist Erwin Schroedinger's most famous work is a 1935 thought experiment that has piqued the interest of philosophers and appalled cat lovers: the paradox of Schroedinger's cat. Learn how this cat became infamous in
#PhysicsHistory
: .
The U.S. Department of
@ENERGY
has announced it will build an Electron Ion Collider
@BrookhavenLab
. This major new nuclear physics facility—to be completed over the next ten years—is poised to unlock mysteries of atomic nuclei.
In April 1995, scientists at Fermilab achieved a major breakthrough by discovering the top
#quark
, the final piece of the puzzle in the Standard Model's quark. Read more in
#PhysicsHistory
: .
#OTD
in 1956, the law of parity conservation was overturned in a groundbreaking experiment that had profound implications for our understanding of the universe and paved the way for further advancements in particle physics. Learn more: .
Not a single open seat was found at
#apsmarch
's twisted graphene session. Here's a brief history on the exploding new field of "twistronics". via
@QuantaMagazine
A hunt for a spin-gravity interaction has implications for the existence of hypothetical forces of nature and for the origin of the Universe’s matter-antimatter asymmetry. Read more in
#PhysicsMagazine
: .
Congratulations to 2018
@NobelPrize
in Physics recipients Arthur Ashkin "for the optical tweezers and their application to biological systems”, and Gérard Mourou and Donna Strickland “for their method of generating high-intensity, ultra-short optical pulses”!
A hundred years ago, Emmy Noether proposed a powerful theorem declaring that symmetries in physics require associated conservation laws. Check out this article by
@ScienceNews
to read about her life and extraordinary contributions to physics.
Big news for
#ParticlePhysics
! ⚛️ After years of planning, the P5 report is out, outlining the field’s multi-billion-dollar priorities for the next decade and beyond. Learn more in
#APSnews
: .
@elizaboatman
Math is the language of physics: the highly complex, incredibly precise language of physics. On several chalkboards,
@SLAClab
's Lance Dixon writes out a "remarkably simple" formula which contributes to understanding particle collisions: via
@symmetrymag
The first
#MRI
exam was performed on a live human patient
#OnThisDay
in 1977. “It was eerie. I saw myself in that machine,” said physicist I. I. Rabi—whose magnetic resonance method enabled MRI—when he was later scanned himself. Read the
#PhysicsHistory
:
For parents who have suddenly become teachers,
@PhysicsCentral
has a downloadable activity book, a great way to incorporate physics into homeschooled elementary curriculum.
On this day in 1895, Wilhelm Conrad Roentgen discovered the X-ray–forever changing the practice of medicine. Several of his early X-rays are of his wife Anna Bertha Ludwig's hand.
#tbt
#NationalSTEMDay
A lack of diversity prevents physics from reaching its full potential. To combat inequality in physics and other STEM fields, institutions must consider the intersectionality of these problems. via
@PhysicsWorld
.
@LIGO
Operations Specialist William Parker, the control room operator on duty during the arrival of the first gravitational wave ever detected, points to the signal inscribed on the APS Historic Site plaque.