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The Electron

Quantum Theory links
What has Quantum Theory got to do with The Electron? It seems that the electron can be proven to be a wave rather than a particle.
Why is this crazy stuff not on the syllabus?
Millikan Oil-Drop experiment Discovered the charge on the electron 3 Star
Why is glass transparent? link YouTube. 5 minutes.  
How are electrons responsible for colour? YouTube. 5 mins. Explained in tems of copper 4 Star
       
How can an electron be both a particle and a wave Dr Quantum explains one of the biggest conundrums in all of Science 5 Star
View J.J. Thompson's letter where he described his experiments on cathode rays
Heavy going but it gives some indication of what it's like to work in a field where you are trying to make sense of results - no obvious conclusions
Of the "Electron," or Atom of Electricity Stoney's letter where he lays claim to coining the term 'electron' 5 Star
Discovery of the electron by J.J. Thompson
Youtube 3 minutes. Thompson won a Nobel prize for discovering the particle called the electron while his son later went on to win the Nobel Prize for proving it was a wave!
4 Star
Cathode Ray Tube      
Nice simulation
 
Play with the variables, then use your mouse to drag the system and change the perspective
4 Star
More detailed investigation
Description of how a Cathode Ray Tube works. MyYoutube 6:30
       
How a television screen works Play with the magnets to change direction of the ray; you can also change intensity 4 Star
  In practice we use coils instead of magnets. 4 Star
  But how does this produce a picture 4 Star
  But where do the different colours come from? 4 Star
Bjoerk explains how it works wimp.com 3 minutes 3 Star
Want to know what's inside a TV? –Try shooting it.
Not quite the scientific approach, but whatever rocks your boat. YouTube. 3 mins
4 Star
What happens when you bring a strong magnet up to a tv screen?
Youtube. 4 minutes
4 Star
Something similar
Youtube. 1:30
4 Star
Messing with a CRT and a magnet From MIT tech tv 4 Star
       
       
A beam of electrons moving at right angles to a magnetic field will move in a circular path
What it says is what it does
4 Star
  Charge in an electric and magnetic field  
Why a charged particle moves in a circle
Nice animation to help explain the concept. Youtube. 15 seconds.
4 Star
     
Photoelectric Effect Applets
Shine the light (once it's at the correct frequency) and watch as electrons get released.
5 Star
From explorelearning.com, another very useful applet
5 Star
 
Simple animation but effective in demonstrating various aspects.
5 Star
 
Simple animation to illustration the maths equation.
5 Star
       
The Photoelectric Effect
     
Simularion followed by demonstration Myyoutube. 9 minutes  
Using just tinsel and a coke can as the gold leaf electroscope Nice demonstration . Youtube. 1 minutes 5 Star
Some background information on the demonstration above Blog post  
       
The Photoelectric Cell
Using simulation plus demonstration . MyYoutube. 5:30.
 
       
X-Rays
Diagram of an x-ray tube From explorelearning.com 4 star
7 minute introduction from Youtube
4 Star
Short interactive introduction
3 Star
Or you could just use sellotape Seriously. Text-based from the BBC 3 Star
X-ray images
Drag the viewing frame around the palm of the hand to see its x-ray image
4 Star
Lots more x-ray images
4 Star
Penetration of x-rays From explorelearning.com 4 star
Amazing X-ray GIFs Show Joints In Motion Not sure how they obtained these images, but they're pretty cool 4 Star
Xray images of Sword Swallowers in action
Freaky
4 Star
Sticky tape x rays
Youtube. 30 seconds
5 Star