ASTRO-110 Lecture Notes - Lecture 7: Semi-Major And Semi-Minor Axes, Electric Field, London Academy Of Music And Dramatic Art
Document Summary
Kepler"s rule of equal areas in equal time exactly. Light: by measuring the semimajor axis and the period of orbit we can determine the mass of far away objects. Sometimes behaves like a wave and sometimes like a particle. which way it behaves depends on how you interact with it! Photon: carries energy: energy, mass-less, has a particular frequency associated with energy, light carries energy in either picture: e=hf. We see white light when all colors of light strike the same spot at the same time. There is no such thing as white light" what our brain sees with a lot of colors arriving at the same time, same place on our retina, same intensity. A prism bends different colors (frequencies or energies) of light at different angles so that each strikes a different spot. Different cones in eyes are sensitive to different parts of the color spectrum (registers wavelength lamda) Short wavelength = higher frequencies higher energies per photon.
