EPS SCI 3 Lecture Notes - Lecture 3: Raisin Bread, Fred Hoyle, Solar Luminosity

• School: UCLA
• Department: Earth, Planetary, and Space Sciences
• Course: EPS SCI 3
• Professor: 5.0 Margot, J.Treude, T.I.

Document Summary

As it gets hotter, the radiations beings to shift to the left and peak at different source. The e available per unit surface area decreases as the square of the distance from the. Flux: solar luminosity (w)/(4pi * rsquared) [m^2] If you q square 4 squares 16 squares of light. Measured the doppler shift of several galaxies inferred the velocities of galaxies. The farther away a galaxy is, the faster it seems to be receding away from us. This implies that the universe is expanding. Why is it expanding? raisin bread and balloon analogies. After you put raisin bread in the oven, the distance between raisins expands. The farthest away galaxy is the fastest. No, it doesn"t matter where you start, you would observe the same thing. If you draw dots on a balloon then inflate it, the distance between the dots would increase. However, the universe does expand into anything, there is no center and there are no edges.