Vacuum tube

High school (ages 12+)
Science & Technology

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/vacuum-tube

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the key component for amplification?The triode, invented by Lee de Forest in 1906, enabled signal amplification
2. What is the modern niche applications?Used in high-power transmitters, microwave ovens, high-fidelity audio, and guitar amplifiers

Thermionic Diode: A two-electrode vacuum tube that allows current to flow in one direction, used for rectification.
Triode: A three-electrode vacuum tube (cathode, anode, control grid) capable of signal amplification.
Tetrode/Pentode: Vacuum tubes with additional grids (screen grid, suppressor grid) to improve performance and frequency response.
Solid-State Electronics: Electronic devices made from semiconductor materials, such as transistors and integrated circuits.