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How Small Are Atoms?
Here on Universe Today we often discuss things that exist on the atomic and sub-atmonic scale. Even though astronomy is concerned with very big things that happen over very, very large distances and...
View ArticleAstronomy Cast Ep. 335: Photoelectric Effect
Pop quiz. How did Einstein win his Nobel prize? Was it for relativity? Nope, Einstein won the Nobel Prize in 1921 for the discovery of the photoelectric effect; how electrons are emitted from atoms...
View ArticleAstronomy Cast Ep. 378: Rutherford and Atoms
Physicists knew the interior of the atom contained protons, neutrons and electrons, but they didn’t understand exactly how they were organized. It took Ernest Rutherford to uncover our modern...
View ArticleAstronomy Cast Ep. 379: Fermi’s Atom Splitting
When he wasn’t puzzling the mystery of alien civilizations, Enrico Fermi was splitting atoms. He realized that when atoms were split, the neutrons released could go on and split other atoms, creating a...
View ArticleWeekly Space Hangout – Oct 2, 2015: Water on Mars, Blood Moon Eclipses, and...
Host: Fraser Cain (@fcain) Guests: Morgan Rehnberg (cosmicchatter.org / @MorganRehnberg ) Pamela Gay (cosmoquest.org / @cosmoquestx / @starstryder) Kimberly Cartier (@AstroKimCartier ) Brian Koberlein...
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Will Minds Appear in the Cosmos?
This is a video – you should watch it! One of the interesting consequences of quantum theory is that particles can randomly appear in the cosmos, and if you wait long enough, conscious minds and maybe...
View ArticleAstronomy Cast Ep. 392: The Standard Model – Intro
Humans, cars and planets are made of molecules. And molecules are made of atoms. Atoms are made of protons, neutrons and electrons. What are they made of? This is the standard model of particle...
View ArticleAstronomy Cast Ep. 393: The Standard Model – Leptons & Quarks
Physicists are getting a handle on the structure of the Universe, how everything is made of something else. Molecules are made of atoms, atoms are made of protons, neutrons and electrons, etc. Even...
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Who Was Democritus?
As the philosopher Nietzsche famously said "He who would learn to fly one day must first learn to stand and walk and run and climb and dance; one cannot fly into flying." This is certainly true when...
View ArticleAstronomy Cast Ep. 374: Stern-Gerlach Experiment
In the world of quantum mechanics, particles behave in discreet ways. One breakthrough experiment was the Stern-Gerlach Experiment, performed in 1922. They passed silver atoms through a magnetic field...
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