GridVids
Sign in with YouTube

Why do hot objects glow?

minutephysics Oct 24, 2026 16:00
Create an account to hide videos, mark them watched, or save them to Don't Miss.
Don't Miss
Create an account to hide videos, mark them watched, or save them to Don't Miss.
Mark watched
Create an account to hide videos, mark them watched, or save them to Don't Miss.
Hide
Open in popup Open on YouTube
Share video

Share video

Copy the GridVids link or iframe code.

Video link
Iframe code
Iframe content

Full video: https://www.youtube.com/watch?v=1pfqIcSydgE A process called "blackbody radiation" makes all objects glow with light of a color depending on their temperature. The reason that you don't see your friends glowing, though, is because we're too cool to glow with visible light - we glow in infrared. But lava, a hot piece of iron, or soot in a flame are all hot enough to glow with that familiar red-orange light. Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute! Created by Henry Reich
Science & Technology
#physics #minutephysics #science