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All about... cryptography
Why the North pole is actually a South seeking pole
How does an artificial heart work?
How do no-fly zones work?
Why is there more matter than antimatter?
Who is Stephen Hawking?
Nobel-prize winning accidents
Molecules at the Movies
Hyperthermia - Cancer therapy hots up
Why do teapots drip?

Saint Mary's University Astronomy & Physics Demo Page
Provides demonstrations on various physical and astronomical principles with in depth descriptions about the experiments and the theory behind them, as well as detailed instructions on how to perform ...

A Rough guide to electronics
A useful introduction to electronics, covering circuits, resistors, capacitors and semi conductors and explaining all the relevant principles.

Electroplating - How it works
A quick introduction to the scientific principles behind electroplating , including two demos to try out, allowing you to plate a copper penny with zinc.

The Virtual Tokamak
As part of the Internet Plasma Physics Education eXperience (IPPEX) project, this Java applet is designed to illustrate the basic principles of magnetically confined fusion.

Baseball Curve
Explains why a spinning ball will curve in the air. This is the same principle used by footballers.

Huygens' Principle
In 1678 the great Dutch physicist Christian Huygens wrote on the wave theory of light.


Optics for Kids
With a series of questions and answers the site takes the user from basic light principles to lenses in glasses and telescopes, and lasers. There are useful links and an optics glossary.


Refractometry
Refractometers are measuring instruments which are based on the principle that as the density of a substance rises), it's refractive index rises proportionately.

Imaginary Explanations
The peculiar aspects of quantum spin measurements in EPR-type experiments can be regarded as a natural extension of the principle of special relativity. This article looks at the mathematics of this ...