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Radioactivity: Expect the unexpected - Steve Weatherall

2012-12-10

[public] 820K views, 11.3K likes, dislikes audio only

channel thumbTED-Ed

View full lesson: http://ed.ted.com/lessons/radioactivity-expect-the-unexpected-steve-weatherall

Neutrons don't change into protons. Except, sometimes, they do. Radioactivity is the process under which the nucleus can change spontaneously from one element to another. Steve Weatherall suggests that we acknowledge both the usefulness and danger inherent in harvesting radioactivity.

Talk by Steve Weatherall, animation by Eugene Uymatiao.


NEUTRON
/youtube/video/TJgc28csgV0?t=87
PROTON
/youtube/video/TJgc28csgV0?t=90
ALPHA (a) – HELIUM PARTICLE – NUCLEUS
/youtube/video/TJgc28csgV0?t=123
USEFUL OR DANGEROUS?
/youtube/video/TJgc28csgV0?t=138