Some people used frogs for the weather forecast. But a simple deep well also works. What was considered magic for a long time was simply the old knowledge of physical facts, fed by experience. Who would have thought that a modern safety lid could enhance the magic? 😎 😉 https://ko-fi.com/post/Well-Magic-Q5Q1X335O
#Science#Physics
Aristotle said a bunch that was wrong
Galileo and Newton fixed things up.
Einstein - broke everything again.
Now, we`ve BASICALLY got it all worked out.
Except:
small
big
hot
cold
fast
heavy stuff,
turbulence and the concept of time.
French physicist Augustin Fresnel signs his preliminary "Note on the Theory of Diffraction" (deposited on the following day). The document ends with what we now call the Fresnel integrals.
The Fresnel integrals have various applications in optics, such as in the calculation of the diffraction pattern produced by a single slit or a circular aperture, as well as in the study of the propagation of light through various optical systems.
English electrical engineer and physicist John Ambrose Fleming died #OTD in 1945.
He is best known for his invention of the vacuum tube diode, which he patented in 1904. The vacuum tube diode, also known as the Fleming valve, was the first practical vacuum tube and allowed for the detection & amplification of electrical signals. It was a crucial component in early radio receivers and telecommunications systems, laying the foundation for the development of modern electronics.
Fleming retired from University College in 1926 and received the Faraday Medal of the British Institution of Electrical Engineers in 1928. He was knighted in 1929 and elected president of the Television Society of London 1930. Fleming was awarded the IRE Medal of Honor in 1933, "For the conspicuous part he played in introducing physical and engineering principles into the radio art." via @ETHW
Off the wall #Physics question: the coldest place in the history of the universe is arguably on Earth, now. We've spent a lot of energy doing this. If the fate of the universe is a Heat Death, have we accelerated it a tiny bit by making stuff colder?
Belgian chemist, industrialist and philanthropist Ernest Solvay was born #OTD in 1838.
He is best known for his pioneering work in the chemical industry and for the establishment of the Solvay process for the manufacture of soda ash (sodium carbonate). In 1911, he began a series of important conferences in physics, known as the Solvay Conferences, whose participants included Max Planck, Ernest Rutherford, Maria Skłodowska-Curie, Henri Poincaré, and Albert Einstein.
The portrait of participants to the first Solvay Conference in 1911. Ernest Solvay is the third seated from the left. Solvay was not present at the time the photo was taken, so his photo was cut and pasted onto this one for the official release.
⚛️ The Quest to Map the Inside of the Proton | WIRED
「 Physicists have begun to explore the proton as if it were a subatomic planet. Cutaway maps display newfound details of the particle’s interior. The proton’s core features pressures more intense than in any other known form of matter. Halfway to the surface, clashing vortices of force push against each other. And the “planet” as a whole is smaller than previous experiments had suggested 」
April 14 has been designated World Quantum Day in honour of Planck’s Constant which can be rounded to h~ 4.14×10−15 eV·s (and some folks write April 14 as 4/14*). Planck’s constant comes up a lot in quantum mechanics; for instance a photon’s energy is h times its frequency). So I thought I would share Feynman Bauhaus.
🧵1/n
“In an alternate universe, you were never born. Parallel universes don’t care. Everyone talks about how they are different, but there are an infinite number of universes identical to this one. No one has, yet, proven that the number holds any significance.”
When I made the figure below I used LaTeX, powerpoint and then LaTeX again. Having learned some TikZ I now think I could draw it using TikZ, but apparently I'm too lazy...