AST 101 Lecture Notes - Lecture 7: First Observation Of Gravitational Waves, Gravitational Wave, Neutron Star

• School: Syracuse University
• Department: Astronomy
• Course: AST 101
• Professor: Walter Freeman

Document Summary

Newton - time and space are absolute and independent of one another. Einstein space and time are intertwined/ the universe is made of space time. Gravity is a curvature in space time. More mass means more curvature coin well spin in malls. Effect is very small on people, cannot be seen. Neutron star (size of city, mass of 2 suns) very dense- slightly visible. Interferometer shows the interference of light waves. Gw150914 first one 2 black holes combined. Gravitational waves completely different spectrum than light. Ancients had close relationship with the sky its actions directly correlated with those on earth. Equator wet and dry season- crescent as a cup. Polynesia islands to guide them/stars rose straight up. Change is regular pattern of phases repeats every 29. 5 days. Moon differs from the stars bc it does(cid:374)"t (cid:373)ake its ow(cid:374) light. Half of the moon is always lit by the sun (half day and night)