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The atom and radioactivity

We cannot predict the future Youtube 2 minutes. From MinutePhysics 4 Star
The Atom Song Youtube 3 minutes. Wonderful history of the atom. Best appreciated by Leaving Cert Chemistry students I suspect. 5 Star
Model of the atom Rutherford's model of a lithium atom. From absorblearning.com 4 Star
Atoms star in 'world's smallest movie' A film using single atoms to animate a boy playing with a ball, dancing, and bouncing on a trampoline, has become the world's smallest stop-motion movie. 4 Star
Just how small is an atom? Youtube minutes.  
       
Golden retrievers explain atoms A crack team of PhD-trained golden retrievers illustrate the structure of atoms - the particles that make up everything around you. They also show how atoms are weirder than you might think.   Youtube. 2 minutes 5 Star
Using the analogy of gang neighbourhoods to explain the atom. Youtube. 2 minutes 3 Star
Witness the birth of helium atoms Courtesy of the Royal Institution. 3 mins
4 Star
 
 
This must mean that we are almost completely empty space!
Short video (1:15) trying to explain this
4 Star
And we can never actually 'touch' anything else. From YouTube. 6 mins. Slightly funkier analysis 5 Star
Try this, from minutephysics YouTube. 6 mins 5 Star
Or this, from Veritasium YouTube. 8 mins 4 Star
Cartoon illustrating the same concept Courtesy of twitter  
Just how small is an atom? YouTube via TED. 6 mins 4 Star
Why is glass transparent? YouTube 4 mins via TED-Ed  
       
Why textbook depictions of the atom are wrong
Youtube. 1:30. Pretty cool
5 Star
 
 
Rutherford's Experiment
Youtube. 3:30. Note that it took Rutherford TWO YEARS to make sense of his results. Includes a clip of the great man himself.
5 Star
A longer clip from which the previous clip was taken. Youtube. 15 mins. 4 Star
An older take on this, but which includes a peak at Rutherford's notes when carrying out this experiment Youtube. 8 mins. It really emphasises the wonder of the discovery. 4 Star
"The Scattering of α and β Particles by Matter and the Structure of the Atom" This should send a little shiver down your spine. 5 Star
Classic Papers from the History of Chemistry (and Some Physics too)
   
       
It kinda freaked him out
Audio link. 1:30. But it's worth it to hear how much it freightened Rutherford.
5 Star
       
Simulations
Basic simulation of Rutherford's experiment to determine the structure of the atom. Remember Rutherford didn't know then what we know now.
3 Star
Simulate the famous experiment in which Rutherford disproved the Plum Pudding model of the atom by observing alpha particles bouncing off atoms and determining that they must have a small core. phet.colorado.edu  
 
This is a variation on the above
3 Star
 
Nice simulation
4 Star
  Nice animation from absorblearning.com 4 Star
 
   
 
   
Absorption and Emission
Nice n' Easy simulation. Energy comes in and bumps electron up to various levels. Can be downloaded
4 Star
Note that the energy level to which the electron rises depends upon the wavelength (or frequency) of the incident photon
4 Star
Absorption and Emission spectrums for all elements
Click on each element to see its unique spectrum (its 'barcode').
4 Star
A variation on the spectra above This has all the spectra on one page
4 Star
Beautiful pictures of emission spectrums on flickr
Taken with a camera and a hand-held spectroscope.
4 Star
How Kirchoff first discovered Spectroscopy
From HowStuffWorks. 3 minutes
4 Star
Why is glass transparent? YouTube. 2 mins on TED-Ed. YouTube
4 Star
Fluorescence What does fluorescence have to do with Physics and the atom? Nice video on fluorescence in minerals
4 Star
Fireworks colors and the element that creates that color Twitterpic from scienceporn 4 Star
In zero gravity a candle's flame is round and blue But why blue? Twitterpic 4 Star
Radioactivity      

Overview on radioactivity: Expect the unexpected.

YouTube via TED -Ed. 2 minutes. 3 Star
       
Alpha, Beta, Gamma
   
How to differentiate between the three types YouTube 2 minutes. 3 Star
My demonstration MyYouTube 9 minutes.  
Another go at it MyYouTube 8 minutes.  
Alpha decay of radon Simple diagram
3 Star
Alpha, beta, gamma penetration
Simple diagram
5 Star
Tissue penetration Simple diagram
5 Star
Interactive chart of Radioactive Isotopes
Also gives you corresponding Half-lives.
Would have nice if they also told us what percentage of the element each isotope is.
3 Star
Decay Chain
Radioactive Decay Series. Can you identify whether the decay is alpha or beta in each case?
3 Star
 
Similar, from absorblearning.com
3 Star
       
2,014 mousetraps and 2,015 Ping-Pong balls create ultimate chain reaction Link YouTube 2 minutes.  
       
Radioactivity Half-Life Graphs
Graph of radioactive decay
3 Star
 
Same as above
3 Star
       
Carbon dating Using carbon dating to date the age of the Earth. YouTube. 4 mins 4 Star
Radiocarbon dating of mummy wrappings link YouTube. 7 mins 4 Star
Ionisation by alpha particle
Nice animation from absorblearning.com
4 Star
Ionisation by gamma radiation
Nice animation from absorblearning.com
4 Star
Penetration power of the three types of radiation
Nice animation from absorblearning.com
4 Star
Tissue penetration power of radiation Nice animation from absorblearning.com
4 Star
How a smoke detector works YouTube 4 minutes. Involves radioactivity and semiconductors
4 Star
The effect of a radioactive source on a charged gold leaf electroscope Nice animation from absorblearning.com
3 Star
       
Demonstrating Radioactivity Nice ideas for demonstrations. 27 minutes
5 Star
Radioactive tabletops A report on the danger associated with granite counter-tops is dismissed by the experts. From The Irish Times.
Isotopes and enriched uranium The relationship between isotopes and enriched uranium.
YouTube 9 minutes.
5 Star
Random Number Generator
The only actual random number generator.
Everything else is based on a program.
5 Star
       
Various radiation detectors
Nice animations of what's going on at the atomic level
5 Star
Using a Geiger Counter Link Very useful simulation for distinguishing beween alpha, beta and gamma radiation, but needs to be downloaded to your hard-drive to view 5 Star
Radioctivity detector app for iPhones Needs to be iPhone4 or 4S  
And one for android phones I haven't tried these so can't rate them. Look cool though.  
See a review of this one YouTube. 17 mins. Seems like a lot of work to calibrate it  
       
How much radiation are we exposed to every day?

Three minute QuickTime Video.


4 Star
Piechart illustrating the sources of natural radiation we are exposed to. From absorblearning.com
3 Star
Radon gas in your home
Three minute QuickTime Video.
4 Star
Radon Gas (mainly from granite rock)
Comprehensive (flash file) introduction to Radon gas. Focused on England.
4 Star
Radon in Ireland
Irish Radon page. Click on the map to see how your county fares.
5 Star
Radiometric Dating Three minute QuickTime Video. You need to register


4 Star
       
Oddballs      
Looking for safe low-level radiation source? Try a search for 'radioactive fiesta-ware' from eBay 5 Star
Your one-stop shop for all things radioactive Link unitednuclear.com  
Here's another Link madnuclearscientists.com  
Radioactive toothpaste Want teeth like Tom Cruise? - try this for starters
Using radioactivity to generate musical notes. Fantastic Axel Boman & The Radioactive Orchestra featuring Rubidium 88 & Cobolt 60. YouTube
5 Star
Create your own music Different notes correspond to different types of radiation. Wonderful mixture of Music and Science
5 Star
 

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