This video discusses the concerns people have about radioactivity and shows that, rather than the radioactivity itself, it is the radioactive atoms that are of greater concern.  Radioactivity (alpha and beta particles) is relatively harmless unless it enters the body.

Kelly is a radiographer at Addenbrookes hospital.  She produces X-rays for doctors to use in the diagnoses.  She was a parent at a young age and decided to follow an access course for two evenings a week over two years.  She aims to specialise in an area of radiography and progress to becoming a senior member of...

Dr. Lewis Dartnell takes a sample from the Atacama desert, to the Open University, to be analysed by a Raman spectrometer.  The spectrometer shows the organic compounds that Lewis found on the quartz, as well as the composition of the quartz itself.

This video is part of a series of ten which look at the one...

These downloadable videos and animations are part of the multimedia package Stuff and Substance, developed by the Gatsby Science Enhancement Programme (SEP). They can be used to develop ideas relating to the factors which affect the rate of dissolving and the particle...

These downloadable videos and animations are part of the multimedia package Stuff and Substance, developed by the Gatsby Science Enhancement Programme (SEP). They can be used to introduce and explain the phenomenon of dissolving.

Dissolving is recognised by the formation of a clear mixture. Before mixing,...