Cathode ray

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. The

From playlist Science Experiments!

Neodymium Magnet and Cathode Ray Tube TV (CRT)

What happens putting a powerful magnet close to a cathode ray tube television set? Cathode rays are electrons in movement inside a vacuum tube. Those electrons, being charges in movement generate a magnetic field so they can be lead to the phosphors of the screen with a set of coils that

From playlist ELECTROMAGNETISM

Cathode Ray Tube Experiment and Charge To Mass Ratio of an Electron

This chemistry and physics video tutorial provides a basic introduction into the cathode ray tube experiment. JJ Thompson used this experiment to conclude that all atoms contain negatively charged particles known as electrons. Using this experiment, he was able to calculate the charge to

From playlist New AP & General Chemistry Video Playlist

X Rays - A Level Physics

A basic description of the production of X rays for medical use in remote sensing. Part of the A Level Physics revision series.

From playlist A Level Physics Revision

EEVblog #524 - Vignetting on a Cathode Ray Tube

Dave explains what causes CRT vignetting problems and how to fix it. A follow up to the HP 35660A Dynamic Signal Analyser video here: http://www.youtube.com/watch?v=VNsJ8qSk6CI Whiteboard explanation of how a Cathode Ray Tube works, and how it can cause interference to sensitive measuremen

From playlist Fundamentals Friday

The Fluorescent Lamp - How it Works - Inventors

Introduction to fluorescent lamps: How it works, inventors, animations. The fluorescent light is the most prolific type of lamp in the world. For indoor lighting it remains the lowest cost efficient light source. Inventors include George Inman, Richard Thayer, Edmund Germer, Albert Hull, E

From playlist Fluorescent Lamp Videos

Magnetic Force on a Particle Demo: Cathode Ray Tube

This is a demonstration of the force of a magnetic field on a moving charged particle. Electrons traveling horizontally in a cathode ray tube are deflected upward or downward by a horizontal magnetic field that is perpendicular to the velocity of the electrons. This demonstration was c

From playlist Demos 21. Magnetic Forces and Magnetic Fields

What is an HID Lamp?

List of HID lamps and how to classify the lamp. Mercury Vapor, Metal Halide, Carbon Arc Lamp, High Pressure Sodium, Xenon Short-arc Lamp, Xenon Metal Halide. Learn more at YouTube/EdisonTechCenter.

From playlist How Things Work

How the X-ray Machine Works & Was Invented: from Hertz to Lenard

The x-ray machine predates the discovery of the x-ray by at least 26 years! This video is on *why* Heinrich Hertz led Phillip Lenard to create an x-ray machine that was perfectly suited to discover the x-ray and how it worked. The music is by the fabulous Kim Nalley (and the theme song

From playlist History of Science (in order)

JJ Thomson and the discovery of the electron

In this video I review, with the physics explained, how JJ Thomson discovered the electron I briefly review the history prior and also discuss electric fields, magnetic fields and circular motion and how they all contribute to JJ Thomson's discovery Like what I do? Support by buying me a

From playlist Electromagnetism

Physics of How Wilhelm Roentgen Discovered X-rays

What are the physics details of how (and why) Roentgen discovered x-rays and how did he discover the medical x-ray? Watch the video and find out. As usual the music is from the fabulous Kim Nalley whose rendition of "Electricity, Electricity" came from Schoolhouse rocks.

From playlist Nobel Prize History

Vintage Computer Tech: 1943 Navy: The Cathode-Ray Tube (CRT) educational (Du Mont Oscilloscope)

Vintage 1943: A restored “old school” educational video by the U.S. Navy on the use of Cathode-Ray Tubes (CRT). This 1943 film covers the basics of the CRT and its uses. CRT technology grew rapidly in the 1940's during RADAR advancements. During the 1950's, early computers started using

From playlist Vintage Television & Radio Technology, film restoration, film preservation, scanning and digitization

Understanding CT scans

CAT or CT scans are used to achieve high resolution images inside the body. But how do they work? Watch the video to find out See more Medical imaging techniques here - https://www.youtube.com/playlist?list=PL5Tk152XlY6SHAnblHcXldLZvYtKUCAUw See www.physicshigh.com for all my videos and

From playlist Medical Physics

JJ Thomson Cathode Ray Tube Experiment: the Discovery of the Electron

In 1897, JJ Thomson discovered the electron in his famous cathode ray tube experiment. How did it work and why did Thomson do the experiment in the first place? Watch the video and find out! As usual a big thank you to the fabulous Kim Nalley for her background music and her version of

From playlist Early History of Quantum Mechanics

From Geissler Tubes to Cathode Ray Tubes (Crookes Tubes), Physics & History

Follow the history and physics of how we went from beautiful Geissler tubes to the unbelievably important cathode ray tube also known as the Crookes tube (CRT led to the oscilloscope, television, the x-ray machine & the discovery of the electron). By the way, Crookes was truly propheti

From playlist History of Science (in order)

Playing with Cathode Ray Tubes (CRTs - with full explanation)

We explain how Cathode Ray Tubes (CRTs) were invented and how they work, and hook up a few to light them up. They are as intimidating as they are awesome. But did you know that they led to the discovery of the electron, and the birth of a new field, electronics? And of course the inventio

From playlist Tube Based Equipment

Photoelectric Effect History: Einstein vs. Lenard

Einstein won his Nobel Prize for the photoelectric effect, but why? He was more famous for relativity. It all has to do with a man named Philipp Lenard. Lenard's experiments inspired Einstein, and Lenard at first befriended Einstein but then turned and made his life a misery. This is a

From playlist Nobel Prize History