Monday 2 March 2009 photo 1/1
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Monday 2 March 2009 photo 1/1
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Quantum mechanics ("QM") is a part of physics. It explains how certain very small things behave. These things are called subatomic particles and electromagnetic waves. Quantum mechanics is mathematical. QM is important to physics and chemistry.
Physics says that there are four kinds of forces of nature. With quantum mechanics we can understand three of them: the strong force, the weak force, and electromagnetism. But we cannot understand the fourth force, gravity, with QM.
Quantum in the Latin language means 'how much'. Quantum mechanics says that a thing cannot move at any speed. Instead, QM says that a thing can only move at certain speeds. There are gaps between these speeds. These gaps have different sizes. That is what 'how much' means.
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Simple English Wikipedia FTW.
Pic related, det är Dr. Quantum!
Look - There on the horizon! Is it a physicist? A shaman? No... It's Dr Quantum!
Checks these for easy-to-understand quantum physics that will blow your minds. All of them.
Flatland (om hur vår värld skulle te sig för en flerdimensionell varelse):
http://www.youtube.com/watch?v=BWyTxCsIXE4
The double slit experiment (om hur partiklar beter sig beroende på om man tittar på dem eller inte, och hur de kan vara på flera ställen samtidigt, och ingenstans alls):
http://www.youtube.com/watch?v=DfPeprQ7oGc