[PCS 181] - Final Exam Guide - Comprehensive Notes fot the exam (72 pages long!)

• School: Ryerson University
• Department: Physics
• Course: PCS 181
• Professor: Margaret Buckby

Document Summary

Wavelengths of light let us see colour; different wavelengths produce different colours. Red = 700 nm = 700 x 10-9 m = 7 x 10-7 m. Violet = 400 nm = 400 x 10-9 m = 4 x 10-7 m. Planck blackbody curve is a graph that is intensity vs. wavelength. Dom or max is the value you are looking for on the graph. A shorter distance between wavecrests (= wavepeaks) the object is moving toward you (cid:862)blue- shifted(cid:863) = wavelength difference between lab and stellar spectra. Vr = c = (3 x 108 m/s)(656. 2927 656. 2850) nm. Flat universe: universe contains the so-called critical density of matter -> galaxies barely manage to avoid re-collapse. However, hydrogen in any state gives of a radio signal and dark matter does (cid:374)ot; the(cid:396)efo(cid:396)e, it"s (cid:374)ot h(cid:455)d(cid:396)oge(cid:374). Quintessence, the vacuum energy, the (cid:272)os(cid:373)ologi(cid:272)al (cid:272)o(cid:374)sta(cid:374)t. (cid:894)do(cid:374)"t (cid:374)eed to stud(cid:455)(cid:895) Pai(cid:396)s of (cid:448)i(cid:396)tual pa(cid:396)ti(cid:272)les (cid:862)pop(cid:863) i(cid:374)to e(cid:454)iste(cid:374)(cid:272)e f(cid:396)o(cid:373) the (cid:448)a(cid:272)uu(cid:373) a(cid:374)d (cid:395)ui(cid:272)kl(cid:455) a(cid:374)(cid:374)ihilate each other.