Author Question: Kirchhoff was the first to describe qualitatively the types of spectra we observe from luminous ... (Read 59 times)

sabina · **on:** Jul 27, 2018

Kirchhoff was the first to describe qualitatively the types of spectra we observe from luminous objects. Describe the three types and their sources.

What will be an ideal response?

Question 2

Objects which have contracted, but are of too little mass to establish thermonuclear reactions in their cores, are ________, which slowly continue to cool.

Fill in the blank(s) with correct word

jaaaaaaa · **Reply #1 on:** Jul 27, 2018

Answer to Question 1

His first law has dense hot objects creating a continuous spectrum. In the second law, a low density hot gas gives off bright emission lines. In the third law, a cool thin gas in front of a continuous source will absorb some of the energies, creating dark lines in the spectrum.

Answer to Question 2

brown dwarfs