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The emission of electrons from metals heated above 1000 degree centigrade is called thermionic emission. The name is made of thermo (heat) and ion (charged particle). See an introduction here.
Published by Dr. Johnson C Philip 93 months ago in Physics | +22 votes | 14 comments
Today everyone knows that electrons and protons are constituents of atom, but what exactly is an electron. How exactly did they discover it?
Published by Dr. Johnson C Philip 93 months ago in Physics | +15 votes | 16 comments
A discussion of one philosopherÂ’s painful explanation of the process we label as time.
Published by Nora K Anthony 93 months ago in Physics | +2 votes | 2 comments
Resonance of sound waves is an effect which makes all the beautiful sounds around us possible. If you love the sound of pipe organ, you should give thanks to resonance.
Published by Dr. Johnson C Philip 94 months ago in Physics | +18 votes | 20 comments
Sound is something we cannot live with. At the same time, noise is something we cannot live with easily. Yet most of us have little understanding of sound!
Published by Dr. Johnson C Philip 94 months ago in Physics | +14 votes | 7 comments
This article covers Newton's laws and their implications to modern and ancient science.
Published by Jacob Funk 94 months ago in Physics | +3 votes | 0 comments
Elasticity is a very interesting word. It came into everyday vocabulary from science, and has acquired a meaning that is totally opposite to the original meaning.
Published by Dr. Johnson C Philip 94 months ago in Physics | +17 votes | 26 comments
This article explains the photoelectric effect and how digital cameras work.
Published by Jacob Funk 94 months ago in Physics | +1 votes | 2 comments
This article explains the leading theories in the still unsolved problem of quantum gravity.
Published by Jacob Funk 94 months ago in Physics | +2 votes | 1 comments
These days it is common to hear of Particle Accelerators. These are very large machines using which scientists study the structure of atoms and particles that within the atom.
Published by Dr. Johnson C Philip 94 months ago in Physics | +8 votes | 7 comments
What exactly is a magnet? Sure they are the things we stick on our fridges, but what are their properties and other types of magnets?
Published by FactoidFactor 94 months ago in Physics | +13 votes | 10 comments
Schrodinger's Cat is a famous thought experiment that highlights the fact that matter can exist in two states at once. This article covers this basic experiment, as well as a more modern experiment in the same field.
Published by Jacob Funk 95 months ago in Physics | +11 votes | 0 comments
We expect heavy bodies to fall faster than light bodies. Actually they all fall with the same velocity, contrary to human intuition as demonstrated by Galileo.
Published by Dr. Johnson C Philip 95 months ago in Physics | +14 votes | 13 comments
Einsteins' Theory of Special Relativity is explained in a simple manner for the interested person.
Published by Dr. Johnson C Philip 95 months ago in Physics | +25 votes | 16 comments
Black holes, one of the most explored astronomical objects, in both fiction and science. This article debunks a few myths about black holes, and explains what they are, what they do, and some of the leading current research on black holes, all in the time it takes to drink a nice cup of coffee. (Well, we'll assume that it's hot and that you don't start right away)
Published by Jacob Funk 95 months ago in Physics | +5 votes | 0 comments
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