IB Physics: Alpha, Beta and Gamma Radiation

Describes the different forms of radiation produced by unstable nuclei, and their ability to penetrate and ionize matter.
IB Physics Topic 7.1
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Table of Contents
0:00 Types of Radiation, alpha, beta, gamma
3:42 Interaction of Radiation with matter
5:33 Penetration of Radiation
6:18 Ionizing ability of Radiation
8:00 Radiation in Magnetic fields
8:46 Background Radiation
9:21 Example 1
10:21 Example 2
11:17 Example 3
12:04 Summary

[riyadhbaksh]

If anti-particles simply refer to the same particle with an opposite charge, how can there be anti-neutrinos? Don't neutrinos have no charge anyways (so wouldn't a neutrino be the same thing as an anti-neutrino)? Thanks!

[onelkakona]

I'm little confused. isn't Alpha particle an unstable element? at 9:30 its mentioned that it's very very stable.
why doesn't it undergo radioactive decay? since its already an Alpha DECAY particle

[mohammedshukri]

Hello Mr. Doner,
your videos are very helpful, but can you please make a video on capacitance? thanks.

[sleepilatanja]

Got confused with the magnetic field thing at 8:38, didn't you mention previously that positrons, which are also beta particles, carry a positive charge?

[superflamecatandblue]

hey mr. chris doner, do you know any source I can practice Feynman's diagrams from?

[riyadhbaksh]

At around 12:00, why is it that range is independent of the initial energy of alpha particles? If they have more energy, wouldn't the range be greater?

[arhankamath]

If neutrinos have some mass (albeit almost none), as opposed to gamma rays and other photons, why do they have a lesser penetration power compared to gamma rays?

[AndRyznar]

What is beyond Gamma Rays? There has to be higher frequencies.

[هاجرالعبرية]

I am confused! .. why is the range independent of the initial energy? I though a higher initial energy means the alpha particles could penetrate more which means increased range. isn't that right?

[canberkozsu]

If range is independent of the initial energy then how come greater KE means greater travel ?