Why do rainbows happen?
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Useful links

How does all this information get to your screen?There are loads of fantastic Physics resources available free on the internet, the only difficulty is sorting the good ones from the rest. Here you will find a collection of links to start you off, although there are many other good sites.
On the bar to the right are a few links that you will probably use most often, including the ubiquitous google, from which you can find your own links. Make sure that you know how to use google's advanced search functions to optimise the effectiveness of your research. If you don't, have a look here.
Wikipedia is very popular and usually very good, but does require a couple of health warnings. Remember that anyone can edit anything, so don't rely solely on it. Also, without self-discipline, you may end up knowing a lot of obscure trivia and wondering where the day went, too...

Don't forget that books, newspapers, TV and radio are also excellent sources of information!

General interest Physics
Food for thought and inspiration at the BBC's Moments of Genius website
New Scientist and Scientific American are always worth a look for the latest stories
In our time has a wonderful selection of science programmes. Put one on your ipod!
Physics World is the news website of the Institute of Physics
Discover the
story behind some of the biggest discoveries in Physics
Get a taste of Physics at university with MIT lecture videos
You can learn about relativity here

Physics reference
Hyperphysics is encyclopaedic and up to university level
Schoolphysics is aimed at students and teachers up to A level
BBC Bitesize and S-cool! have handy revision pages for KS3, GCSE and A level
Useful revision material at revisionworld too
How Stuff works does what it says in the can...
...as does madehow?
Missed a demonstration in class? You might find it here...
... and maybe one day you will join the ranks of Nobel prize winners.

Physics simulations and applets
The University of Colorado has some brilliant simulations which will help you understand
Some nice simple ones for 2-5th form at Freezeray
Almost everything here, and all in glorious technicolor

Physics links by topic
Astronomy and Cosmology
University of Chicago cosmology lecture course
The electric orrery simulates the motion of the solar system
A very comprehensive online textbook of Astronomy

How CDs work
Stop watching TV and find out how it works instead
The language of digital -
binary numbers
conversion tool

The Earth and environment
Animation explaining the greenhouse effect
An excellent summary of future UK energy generation options
Mid-ocean ridges and more

More than you ever wanted to know about magnets
In-depth explanation of electric motors and generators

Experimental error analysis
An accessible treatment of experimental errors

Heat and energy
Convection simulation

Mechanics and motion
Simulation of the monkey and hunter problem
Newton's mountain and escape velocity simulation
Various mechanics and motion simulations

An effective half-life simulation

Information on beat frequencies
Interference tutorial and simulation
Some good acoustics and vibrations simulations

Oddities (don't try any of these at home!)
The ultimate mentos & coke experiment
Learn astrophysics while you sing with Astrocappella
Will it blend?


Website sections

A level

Useful links

New Scientist
Scientific American