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Thomson's Cathode Ray Tube & Discovery of the Electron | Atomic Theory Part 5

2025-05-28

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channel thumbChemistry in a Nutshell
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With a glowing glass tube, J.J. Thomson discovered the first subatomic particle: the electron. Learn how his experiments changed the idea of the atom forever by proving that atoms are divisible, leading to Thomson's plum pudding and Nagaoka Saturn-like model of the atom.

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0:00 JJ Thomson's Cathode Ray Tube Experiment

1:10 Charge-to-Mass Ratio

1:38 Implications of Findings

2:37 TL;DR Thomson's Findings

3:11 What does this mean for the structure of the atom?

3:28 Atomic Models: Nagaoka's Saturn-Like Atom & Thomson's Plum Pudding Model

Images Used:

https://en.wikipedia.org/wiki/File:J.J_Thomson.jpg

https://en.wikipedia.org/wiki/J._J._Thomson#/media/File:JJThomsonGasDischargeTubeElectronCavendishLab2013-08-29-17-11-41.jpg


JJ Thomson's Cathode Ray Tube Experiment
/youtube/video/Ks1SqkJS7E0?t=0
Charge-to-Mass Ratio
/youtube/video/Ks1SqkJS7E0?t=70
Implications of Findings
/youtube/video/Ks1SqkJS7E0?t=98
TL;DR Thomson's Findings
/youtube/video/Ks1SqkJS7E0?t=157
What does this mean for the structure of the atom?
/youtube/video/Ks1SqkJS7E0?t=191
Atomic Models: Nagaoka's Saturn-Like Atom & Thomson's Plum Pudding Model
/youtube/video/Ks1SqkJS7E0?t=208
Chemistry in a Nutshell Ph.D. Chemist | Passionate Educator | Science Enthusiast Welcome! I have a passion for teaching and a knack for explaining complex concepts in a way that's easy to understand. I’m here to share the kind of chemistry lessons I wish I had as a student. I hold a Ph.D. in chemistry and have extensive experience teaching general and organic chemistry. I’ve worked with students from high schools, community colleges, and large research universities. Along the way, I’ve gained a deep appreciation for how essential it is to make chemistry accessible and engaging for everyone. This channel is dedicated to helping students at the undergraduate and high school levels, but it’s also for anyone who has a curiosity about science and how the world works. My current goal is to make a video for every topic covered in both general and organic chemistry. With enough support through Patreon, I will be able to spend significantly more time producing high quality, educational videos.
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