Posts Tagged ‘atoms’
“Protons give an atom its identity, electrons its personality”*…
If the electron’s charge wasn’t perfectly round, it could reveal the existence of hidden particles– and launch a “new physics.” But, as Zack Savitsky reports, a new measurement approaches perfection…
Imagine an electron as a spherical cloud of negative charge. If that ball were ever so slightly less round, it could help explain fundamental gaps in our understanding of physics, including why the universe contains something rather than nothing.
Given the stakes, a small community of physicists has been doggedly hunting for any asymmetry in the shape of the electron for the past few decades. The experiments are now so sensitive that if an electron were the size of Earth, they could detect a bump on the North Pole the height of a single sugar molecule.
The latest results are in: The electron is rounder than that.
The updated measurement disappoints anyone hoping for signs of new physics. But it still helps theorists to constrain their models for what unknown particles and forces may be missing from the current picture…
More at “The Electron Is So Round That It’s Ruling Out Potential New Particles,” from @savagitsky in @QuantaMagazine.
* Bill Bryson
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As we ponder perfection, we might spare a thought for Jean Baptiste Perrin; he died on this date in 1942. A physicist, he studied the Brownian motion of minute particles suspended in liquids (sedimentation equilibrium), and verified Albert Einstein’s explanation of the phenomenon– thereby confirming the atomic nature of matter… for which he was awarded the Nobel Prize for Physics in 1926.
“The more beautiful will the piece be by reason of its size”*…
From the annals of animation…
A Boy And His Atom earned the Guinness World Records record for the “World’s Smallest Stop-Motion Film.”…
What you see on screen are individual carbon monoxide molecules moving around. The film was zoomed in 100 million times. The actual plot of the film is about a boy who bounces his atom around and watches it morph into different forms such as clouds and the word “THINK,” which has been IBM’s slogan since 1911…
And as to how it was made…
“A Boy And His Atom is the world’s smallest movie,” from @BoingBoing.
* Aristotle, Poetics
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As we muse on the micro, we might lament that fact that it was on this date in 1944 that the final installment of George Herriman’s comic strip Krazy Kat appeared– exactly two months after Herriman’s death. The strip– aguably the best ever; inarguably foundational to the form– debuted in New York Journal (as the “downstairs” strip in Herriman’s predecessor comic, The Dingbat Family (later, The Family Upstairs). Krazy, Ignatz, and Offisa Pup stepped out on their own in 1913, and ran until 1944– but never actually succeeded financially. It was only the admiration (and support) of publisher William Randolph Hearst that kept those bricks aloft.
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