TSP #274 - How Heavy Is an Electron? The Experiment That Changed Physics - Scope Giveaway Results
In this episode Shahriar re-traces history and measures an important characteristics of a fundamental sub-atomic particle: the charge to mass ratio of an electron.
This experiment, first performed in 1897 by J.J. Thomson, changed physics by showing that atoms are indeed made of further sub-atomic particles through the discovery of electrons. We build a setup using a pair of Helmholtz coils, a cold-cathode vacuum tube driven by a multi-kV DC power supply & careful measurements of the beam deflection angle. The theoretical foundation of the experiment is described in details.
The measured e/m ratio is compared with the NIST established number with great agreement. The historical impact of the work of J.J Thomson & Robert Milikan (measuring the charge of an electron) are also presented.
The two winners of the giveaway are:
@nicolasblomstrand2912 (YouTube)
Robert S. (Patreon)
Each will receive a Siglent SDS1104X HD!
https://www.siglentna.com/product/sds1104x-hd/
Please consider supporting The Signal Path:
https://www.TheSignalPath.com/Donate
https://www.Patreon.com/TheSignalPath
Other links:
https://www.TheSignalPath.com
https://www.Twitter.com/TheSignalPath
Leave a Reply