Uploaded April 2021 | Updated September 2026, 3 weeks ago

---

The colour of a glowing object is related to temperature but despite this, astronomers do not use colour directly to determine a star's surface temperature.
After reviewing blackbody radiation, this video discusses why this is and also reviews the two ways astronomers determine a star's temperature.

I refer to the paper by René Heller and Jan-Vincent Harre. You can find their paper here - arxiv.org/abs/2101.06254

Many thanks to Prof Geraint Lewis and Jan-Vincent Harre for their valuable feedback

Music by Lost in Wonderland 1 by RokZRooM on FreeSound | web: mQube.in/rame | rokzroom.in"

Subscribe - youtube.com/c/physicshigh

LIKE and SHARE with your peers. And please add a COMMENT to let me know I have helped you.

Support my work either regularly at Patreon: patreon.com/Physicshigh
OR
a one off payment at PayPal: pelooyen@gmail.com

Physics High is committed to producing content that teaches physics concepts at a level a high schooler can understand.
See physicshigh.com for all my videos and other resources.

👥 Social
---------------------------------------------------------
Follow me on
facebook: @physicshigh
twitter: @physicshigh
Instagram: @physicshigh

#highschoolphysicsexplained #physicshigh