Veritasium - Season 2 Episode 3 Cathode Rays Lead to Thomson's Model of the Atom
In the mid 1800's scientists successfully passed an electric current through a vacuum in a glass tube. They saw a glow from the tube that seemed to emanate from the negatively charged plate called the cathode. Since scientists didn't know what the glow was they called it a cathode ray. There was debate over whether the cathode ray was a wave phenomenon like light or a stream of negatively charged particles. JJ Thomson effectively resolved the debate in 1897 by performing a clever experiment that determined the charge to mass ratio of the particles making up the cathode ray. He also showed that this same particle was in all different cathode materials so it must be a constituent common to all atoms. This changed our understanding of the atom from the previous billiard ball model to Thomson's plum pudding model of the atom.
Year: 2024
Genre: Documentary, Reality, Talk
Country: Australia, Canada, Norway, United States of America
Studio: YouTube
Director: Derek Muller
Cast: Derek Muller
Crew:
First Air Date: Aug 15, 2010
Last Air date: Sep 30, 2024
Season: 15 Season
Episode: 45 Episode
Runtime: 15 minutes
IMDb: 8.50/10 by 4.00 users
Popularity: 7.599
Language: English
Season
Season 1
Season 2
Season 3
Season 4
Season 5
Season 6
Season 7
Season 8
Season 9
Season 10
Season 11
Season 12
Season 13
Season 14
Season 15
Episode
Atomic Theory
Thomson's Plum Pudding Model of the Atom
Cathode Rays Lead to Thomson's Model of the Atom
Scientific Notation - Explained!
I'm Atoms (Scientific Cover of Jason Mraz's I'm Yours)
Scientific Notation - Example
The Difference Between Mass and Weight
Egg Experiment to Demonstrate Inertia
Gravity (Scientific Version of John Mayer's Gravity)
How Far Away is the Moon? (The Scale of the Universe)
What is a Force?
What Forces Are Acting On You?
Why Does the Moon Orbit Earth?
What Is Gravity?
Best Film on Newton's Third Law. Ever.
Calculating Gravitational Attraction
Which Hits The Ground First?
Misconceptions About Falling Objects
Is There Gravity In Space?
Three Incorrect Laws of Motion
Experiments A Cappella
Khan Academy and the Effectiveness of Science Videos
What Are Atoms and Isotopes?
Supercooled Water - Explained!
How Damaging is Radiation?