This video explains one of the earliest method of X-ray generation from the heating of filaments in a high vacuum and the usage of high voltages.
The act of getting electrons from heating a filament in high/partial vacuum is called "Thermionic Emissions" where the electrons in the filament is being "boiled" off from the filament metal due high temperature.
1 comment:
I recently produced a short animated explainer video that might be of interest to your audience. It's about how the uncertainty principle and inflation allowed the universe to emerge from "nothing."
The embed-able version can be found here, along with a bit more info and links:
http://www.newscientist.com/blogs/nstv/2011/07/how-the-universe-appeared-from-nothing.html
Thanks.
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