ASTRON C10 Study Guide - Quiz Guide: Photon, Brie, Square Root

• School: Berkeley
• Department: Astronomy
• Course: ASTRON C10
• Professor: All

Document Summary

Sid: i stand behind a cloud of cold hydrogen gas and shine a ashlight onto the gas. You stand on the other side of the cloud, exactly opposite me and facing the cloud. You look through a di raction grating (a miniature-spectroscope) at the gas. (a) describe, in a few sentences what you would see, and why. What kind of spectrum is this? (10 pts) i"ll see a continuous spectrum of colour (a rainbow), with a few dark gaps these are absorption lines. The formula for luminosity is given by l = 4 r2 t 4. So, the brightness is proportional to the temperature to the fourth power. = 24 = 16 (1) where i"ve canceled the 4 and because they appear on the top and bottom; we can also cancel the r because rb = rd since the two stars have equal radii. Tb = 2td because bryce is twice as hot as dorian.