Here, Richard Feynman gives some great examples as to the difficulties in answering the question...Why?
Before asking this, decide how much you already understand, and how much more you wish to know...
Atom ep01.WnA.avi
In this video, Prof Jim Al-Khalili discusses atoms and the history of their discovery.
There is an excellent description of the alpha scattering experiment - good for GCSE or A Level students.
Here, Prof Brian Cox takes us on a journey from the start of the Universe to our lives today. We are all bits of stardust!
Wonders of the Universe Pt2.avi
Light Fantastic 1 - Let There Be Light.avi
In a fascinating history of light and religion we are taken on a journey to the origins of light and how our ideas have developed.
Simon Schaffer tells the story.
This BBC production with Prof Jim Al-Khalili takes us on a journey to measure the acceleration due to gravity and demonstrates a famous experiment by Isaac Newton.
BBC Gravity and Me - The Force That Shapes Our Lives-aNeR_fHcQSs.mkv