AST101H1 Lecture 5: AST week 5

• School: UTSG
• Department: Astronomy & Astrophysics
• Course: AST101H1
• Professor: Michael Reid

Document Summary

If you want to see a black hole from the outside, make sure that it is a suppermassive one. Spring & neap tides occur once every month. The moon s distance increases and months will increase as tides occur. As moon moves out, what happens to the earth? it spins down and heats up. The final state tides lead to? days and months become the same. Ground absorbs light and is heated, scatters some. Waves & light travel in straight lines, reflect, different colour/prisms, refraction. Particles: alhazen, newton, hertz, einstein particles have no inference. Wavelength is the distance between peaks of the electrical field. Frequency is number of waves passing any point each second: gamma rays, hard x-rays, soft x-rays, ultra violet, visible. Temperature = average kinetic energy of randomly moving atoms. Heat (thermal heat)= total kinetic energy of randomly moving atoms. Ten million atoms could fit in a tiny dot.