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Observations on the effects of hot or cold on a rubber band: a simple Physics experiment and entropy.
Published by thestickman 93 months ago in Physics | +19 votes | 7 comments
Why is it that when we look at televised activities of astronauts, they seem to be weightless and floating around in space? And why do bodies become weightless in space? Well the common answer will be to say that this is because there is no gravity in space or that the gravitational force is at a minimum due to the distance between the object from the center of gravity. But then is this correct?
Published by Rosita Barbo 94 months ago in Physics | +9 votes | 2 comments
A photon is described as massless at rest. But does it have mass when it is moving?
Published by PG 94 months ago in Physics | +2 votes | 4 comments
This explains why a ship can float while a stone sinks. in water.
Published by Cynthia Pinga 95 months ago in Physics | +6 votes | 1 comments
Is invisibility possible?
Published by Zizheng Cao 96 months ago in Physics | +3 votes | 6 comments
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 97 months ago in Physics | +22 votes | 14 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 98 months ago in Physics | +14 votes | 7 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 98 months ago in Physics | +17 votes | 26 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 98 months ago in Physics | +8 votes | 7 comments
The idea of time-travel, that people from the present go to the past and future, has been used extensively in fiction. But what is the fact about this concept?
Published by Dr. Johnson C Philip 99 months ago in Physics | +8 votes | 13 comments
Can protons and neutrons be split. The supposedly solid bodies reveal their secret.
Published by Dr. Johnson C Philip 99 months ago in Physics | +10 votes | 8 comments
Published by Abron Toure 112 months ago in Physics | +0 votes | 0 comments
Published by Amanda Bradbury 115 months ago in Physics | +2 votes | 0 comments
Published by Amanda Bradbury 115 months ago in Physics | +3 votes | 2 comments
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