Physics Archives
@physicsarchives.bsky.social
Curating historical documents, notable facts, and photographs from the history of physics. Shared for educational purposes. © Respective owners and archives, as credited.
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“A quiet and modest life brings more joy than a pursuit of success bound with constant unrest.”
— Albert Einstein
[Image courtesy: Caltech Archives]
— Albert Einstein
[Image courtesy: Caltech Archives]
In December 1937, two groups working independently — Pyotr Kapitza in Moscow and John F. Allen with Donald Misener at the Royal Society Mond Laboratory in Cambridge — discovered that liquid helium below the lambda point, about 2.17 K,
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September 8, 2026 at 12:05 PM
In December 1937, two groups working independently — Pyotr Kapitza in Moscow and John F. Allen with Donald Misener at the Royal Society Mond Laboratory in Cambridge — discovered that liquid helium below the lambda point, about 2.17 K,
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“We must be clear that when it comes to atoms, language can be used only as in poetry. The poet, too, is not nearly so concerned with describing facts as with creating images and establishing mental connections.”
— Niels Bohr, as recalled by Werner Heisenberg, 𝘗𝘩𝘺𝘴𝘪𝘤𝘴 𝘢𝘯𝘥 𝘉𝘦𝘺𝘰𝘯𝘥 (1971), p. 41
— Niels Bohr, as recalled by Werner Heisenberg, 𝘗𝘩𝘺𝘴𝘪𝘤𝘴 𝘢𝘯𝘥 𝘉𝘦𝘺𝘰𝘯𝘥 (1971), p. 41
September 7, 2026 at 4:22 PM
“We must be clear that when it comes to atoms, language can be used only as in poetry. The poet, too, is not nearly so concerned with describing facts as with creating images and establishing mental connections.”
— Niels Bohr, as recalled by Werner Heisenberg, 𝘗𝘩𝘺𝘴𝘪𝘤𝘴 𝘢𝘯𝘥 𝘉𝘦𝘺𝘰𝘯𝘥 (1971), p. 41
— Niels Bohr, as recalled by Werner Heisenberg, 𝘗𝘩𝘺𝘴𝘪𝘤𝘴 𝘢𝘯𝘥 𝘉𝘦𝘺𝘰𝘯𝘥 (1971), p. 41
Despite his groundbreaking work on quantum statistics, which formed the basis of what became known as Bose–Einstein statistics and helped shape the modern understanding of quantum mechanics, the eminent physicist 𝘚𝘢𝘵𝘺𝘦𝘯𝘥𝘳𝘢 𝘕𝘢𝘵𝘩 𝘉𝘰𝘴𝘦 never won a Nobel Prize,
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September 7, 2026 at 4:17 PM
Despite his groundbreaking work on quantum statistics, which formed the basis of what became known as Bose–Einstein statistics and helped shape the modern understanding of quantum mechanics, the eminent physicist 𝘚𝘢𝘵𝘺𝘦𝘯𝘥𝘳𝘢 𝘕𝘢𝘵𝘩 𝘉𝘰𝘴𝘦 never won a Nobel Prize,
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On September 2, physicists reported the first direct measurement of the quantum phase of free fall, confirming a prediction from 1927 and its consistency with Einstein’s equivalence principle.
Read the full post here: 🔗 www.facebook.com/PhysicsArchi...
(Photo credit: Or Dobkowski)
Read the full post here: 🔗 www.facebook.com/PhysicsArchi...
(Photo credit: Or Dobkowski)
September 5, 2026 at 2:01 PM
On September 2, physicists reported the first direct measurement of the quantum phase of free fall, confirming a prediction from 1927 and its consistency with Einstein’s equivalence principle.
Read the full post here: 🔗 www.facebook.com/PhysicsArchi...
(Photo credit: Or Dobkowski)
Read the full post here: 🔗 www.facebook.com/PhysicsArchi...
(Photo credit: Or Dobkowski)
120 years ago today, Ludwig Boltzmann took his own life at Duino, near Trieste, while on holiday with his wife and daughter, on September 5, 1906. He was 62.
(Photo credit: Martin Röll / Wikimedia Commons — CC BY-SA 2.0)
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(Photo credit: Martin Röll / Wikimedia Commons — CC BY-SA 2.0)
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September 5, 2026 at 10:05 AM
120 years ago today, Ludwig Boltzmann took his own life at Duino, near Trieste, while on holiday with his wife and daughter, on September 5, 1906. He was 62.
(Photo credit: Martin Röll / Wikimedia Commons — CC BY-SA 2.0)
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(Photo credit: Martin Röll / Wikimedia Commons — CC BY-SA 2.0)
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On September 1, the LZ collaboration reported a puzzling single event in 2.84 tonne-years of data. At 2.6σ global significance, it’s intriguing—but still far from a dark-matter discovery.
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[Photo credit: LUX-ZEPLIN (LZ) Collaboration]
Read the full post here: www.facebook.com/share/p/1DkK...
[Photo credit: LUX-ZEPLIN (LZ) Collaboration]
September 5, 2026 at 1:35 AM
On September 1, the LZ collaboration reported a puzzling single event in 2.84 tonne-years of data. At 2.6σ global significance, it’s intriguing—but still far from a dark-matter discovery.
Read the full post here: www.facebook.com/share/p/1DkK...
[Photo credit: LUX-ZEPLIN (LZ) Collaboration]
Read the full post here: www.facebook.com/share/p/1DkK...
[Photo credit: LUX-ZEPLIN (LZ) Collaboration]
“The breakthrough came suddenly one day. I was sitting on a chair in my patent office in Bern. Suddenly a thought struck me: If a man falls freely, he would not feel his weight. I was taken aback. This simple thought experiment made a deep impression on me.
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September 3, 2026 at 4:22 PM
“The breakthrough came suddenly one day. I was sitting on a chair in my patent office in Bern. Suddenly a thought struck me: If a man falls freely, he would not feel his weight. I was taken aback. This simple thought experiment made a deep impression on me.
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Carl David Anderson was born on this day in 1905 in New York City, the only child of Swedish immigrant parents. His family moved to Los Angeles in 1912, when he was seven, and he entered Caltech in 1923 intending to become an electrical engineer.
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September 3, 2026 at 4:13 PM
Carl David Anderson was born on this day in 1905 in New York City, the only child of Swedish immigrant parents. His family moved to Los Angeles in 1912, when he was seven, and he entered Caltech in 1923 intending to become an electrical engineer.
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“A quiet and modest life brings more joy than a pursuit of success bound with constant unrest.”
— Albert Einstein
[Image courtesy: Caltech Archives]
— Albert Einstein
[Image courtesy: Caltech Archives]
September 3, 2026 at 7:49 AM
“A quiet and modest life brings more joy than a pursuit of success bound with constant unrest.”
— Albert Einstein
[Image courtesy: Caltech Archives]
— Albert Einstein
[Image courtesy: Caltech Archives]
Richard Feynman talking with his hero, physicist Paul Dirac, at the International Conference on General Relativity and Gravitation held in Warsaw and Jabłonna, Poland, 25–31 July 1962.
(Photo credits: Caltech Images Collection/Caltech Archives / Marek Holzman, CC BY 4.0 via Wikimedia Commons)
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(Photo credits: Caltech Images Collection/Caltech Archives / Marek Holzman, CC BY 4.0 via Wikimedia Commons)
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September 2, 2026 at 8:40 AM
Richard Feynman talking with his hero, physicist Paul Dirac, at the International Conference on General Relativity and Gravitation held in Warsaw and Jabłonna, Poland, 25–31 July 1962.
(Photo credits: Caltech Images Collection/Caltech Archives / Marek Holzman, CC BY 4.0 via Wikimedia Commons)
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(Photo credits: Caltech Images Collection/Caltech Archives / Marek Holzman, CC BY 4.0 via Wikimedia Commons)
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“At a very early age, I made an assumption that a successful physicist only needs to know elementary mathematics. At a later time, with great regret, I realized that the assumption of mine was completely wrong.” ~ Albert Einstein
Near the end of his life, he expressed his thoughts to a friend.
Near the end of his life, he expressed his thoughts to a friend.
August 6, 2025 at 11:39 AM
“At a very early age, I made an assumption that a successful physicist only needs to know elementary mathematics. At a later time, with great regret, I realized that the assumption of mine was completely wrong.” ~ Albert Einstein
Near the end of his life, he expressed his thoughts to a friend.
Near the end of his life, he expressed his thoughts to a friend.
Nobel laureate and renowned astrophysicist Subrahmanyan Chandrasekhar was known not only for his groundbreaking work in astrophysics but also for his extraordinary dedication to teaching.
Have a look at this THREAD: 👇🏻 (1/n)
(Photo Credit: the University of Chicago)
Have a look at this THREAD: 👇🏻 (1/n)
(Photo Credit: the University of Chicago)
August 6, 2025 at 5:07 AM
Nobel laureate and renowned astrophysicist Subrahmanyan Chandrasekhar was known not only for his groundbreaking work in astrophysics but also for his extraordinary dedication to teaching.
Have a look at this THREAD: 👇🏻 (1/n)
(Photo Credit: the University of Chicago)
Have a look at this THREAD: 👇🏻 (1/n)
(Photo Credit: the University of Chicago)
A century ago, in the summer of 1925, physicist Werner Heisenberg retreated to the island of Heligoland in the North Sea, seeking relief from severe hay fever. But what he found instead was a revolutionary idea. (1/n)
( © Werner Heisenberg - Archiv; Photograph by Fritz Hund.)
( © Werner Heisenberg - Archiv; Photograph by Fritz Hund.)
August 5, 2025 at 10:47 AM
A century ago, in the summer of 1925, physicist Werner Heisenberg retreated to the island of Heligoland in the North Sea, seeking relief from severe hay fever. But what he found instead was a revolutionary idea. (1/n)
( © Werner Heisenberg - Archiv; Photograph by Fritz Hund.)
( © Werner Heisenberg - Archiv; Photograph by Fritz Hund.)
Albert Einstein’s life advice in a letter to his son Eduard on February 5, 1930:
“Life is like riding a bicycle. To keep your balance, you must keep moving.”
~ Einstein (1879-1955)
In the picture, #Einstein is riding a bicycle in Santa Barbara, USA in 1933.
#PhysicsArchives
“Life is like riding a bicycle. To keep your balance, you must keep moving.”
~ Einstein (1879-1955)
In the picture, #Einstein is riding a bicycle in Santa Barbara, USA in 1933.
#PhysicsArchives
August 3, 2025 at 10:09 AM
Albert Einstein’s life advice in a letter to his son Eduard on February 5, 1930:
“Life is like riding a bicycle. To keep your balance, you must keep moving.”
~ Einstein (1879-1955)
In the picture, #Einstein is riding a bicycle in Santa Barbara, USA in 1933.
#PhysicsArchives
“Life is like riding a bicycle. To keep your balance, you must keep moving.”
~ Einstein (1879-1955)
In the picture, #Einstein is riding a bicycle in Santa Barbara, USA in 1933.
#PhysicsArchives
“Fall in love with some activity, and do it! Nobody ever figures out what life is all about, and it doesn't matter. Explore the world. Nearly everything is really interesting if you go into it deeply enough.” ~Feynman
(Source: Book - Surely You’re Joking, Mr. Feynman!)
(Image Credit: @caltech.edu)
(Source: Book - Surely You’re Joking, Mr. Feynman!)
(Image Credit: @caltech.edu)
August 3, 2025 at 10:03 AM
“Fall in love with some activity, and do it! Nobody ever figures out what life is all about, and it doesn't matter. Explore the world. Nearly everything is really interesting if you go into it deeply enough.” ~Feynman
(Source: Book - Surely You’re Joking, Mr. Feynman!)
(Image Credit: @caltech.edu)
(Source: Book - Surely You’re Joking, Mr. Feynman!)
(Image Credit: @caltech.edu)
In a letter dated April 13, 1901, Albert Einstein’s father, Hermann Einstein, wrote to the renowned chemist Wilhelm Ostwald. In a heartfelt and quietly dignified appeal, he shared his son's deep frustration and struggles, hoping to help him-without Albert's knowledge.
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July 20, 2025 at 6:27 AM
In a letter dated April 13, 1901, Albert Einstein’s father, Hermann Einstein, wrote to the renowned chemist Wilhelm Ostwald. In a heartfelt and quietly dignified appeal, he shared his son's deep frustration and struggles, hoping to help him-without Albert's knowledge.
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A page from Einstein's Zürich notebook features tensors.
July 20, 2025 at 6:21 AM
A page from Einstein's Zürich notebook features tensors.
“Never give up on what you really want to do. The person with big dreams is more powerful than one with all the facts.”
~ Albert Einstein, 'The World As I See It'
~ Albert Einstein, 'The World As I See It'
September 20, 2024 at 5:31 PM
“Never give up on what you really want to do. The person with big dreams is more powerful than one with all the facts.”
~ Albert Einstein, 'The World As I See It'
~ Albert Einstein, 'The World As I See It'
The legendary physicist Hawking's PhD thesis, “Properties of Expanding Universes,” was originally submitted to the University of Cambridge in 1966 and has since gained worldwide acclaim. The thesis explores the mathematical models of the expanding universe within the context of general relativity.
September 20, 2024 at 5:19 PM
The legendary physicist Hawking's PhD thesis, “Properties of Expanding Universes,” was originally submitted to the University of Cambridge in 1966 and has since gained worldwide acclaim. The thesis explores the mathematical models of the expanding universe within the context of general relativity.
Albert Einstein at the age of 19, during his university years at the ETH in Zürich, Switzerland. Little did he know, those very thoughts about light's behavior at that time would later lead him to his groundbreaking special theory of relativity.
(Photo Credit: ETH-Bibliothek)
(Photo Credit: ETH-Bibliothek)
September 20, 2024 at 10:29 AM
Albert Einstein at the age of 19, during his university years at the ETH in Zürich, Switzerland. Little did he know, those very thoughts about light's behavior at that time would later lead him to his groundbreaking special theory of relativity.
(Photo Credit: ETH-Bibliothek)
(Photo Credit: ETH-Bibliothek)
Hello, world: 👋🏻
Join us on a journey of learning as we bring together every @physicsarchives.bsky.social in one place.
Our curated collection of historical documents, facts and photos will take you on a journey through the wonders of physics.
Thanks :(
Join us on a journey of learning as we bring together every @physicsarchives.bsky.social in one place.
Our curated collection of historical documents, facts and photos will take you on a journey through the wonders of physics.
Thanks :(
September 20, 2024 at 10:25 AM
Hello, world: 👋🏻
Join us on a journey of learning as we bring together every @physicsarchives.bsky.social in one place.
Our curated collection of historical documents, facts and photos will take you on a journey through the wonders of physics.
Thanks :(
Join us on a journey of learning as we bring together every @physicsarchives.bsky.social in one place.
Our curated collection of historical documents, facts and photos will take you on a journey through the wonders of physics.
Thanks :(