1021Views5Replies
create "black body" and measure radiation
hi
i have been looking for some experiment about black body radiation
how can i make a black body at home
and how can i measure the black body radiation
using inexpensive materials...
i would like to measure plank's constant and so...
i didn't find anything on the net
any suggestions?
thank you!
Discussions
2 years ago
Where exactly have you been looking? Google? Wikipedia? Presumably not, or you would have found https://en.wikipedia.org/wiki/Black_body#Cavity_w..., which is quite well known.
If you have access to someone who does glass blowing, you can go see a blackbody for yourself: visit them, and look at the hole in the kiln where they stick their glass-blowing pipe. That hole is a very good approximation to a blackbody.
Reply 2 years ago
i was asking for practical information, how to build the black body and how to measure it's radiation (which sensors and so). the theoretical material is already known to me.
Reply 2 years ago
Please try my second paragraph, then. Build yourself a glass kiln, or blacksmithing forge. Cover the opening with a small hole. That hole *IS* a blackbody (as you are aware, since "the theoretical material is already known to" you). To measure it, just get yourself an IR temperature monitor.
Reply 2 years ago
So a blackbody can emit visable light ?
Reply 2 years ago
Sure! There's a big yellowish one up in the sky during the day, with a temperature of 5500 K.