Kirchoff's law e. Stars are composed of mostly a. hydrogen and helium b. carbon and oxygen c. nickel and iron d. hydrogen and carbon e. metallic gases 28. Given the understanding of the nature of light at the time the experiment was first performed this was a shock to the physics community. Boltzmann's law 32. The alternating light and dark lines you see when you form a narrow slit with your fingers and peer at a light source are caused by a. the particle nature of light b. refraction and interference c. diffraction and interference d. refraction and diffraction 38.
Astrophysicists spend a great deal of time studying the properties of light.
A photon is a. a wave-packet of light b. We observe that most objects have no net charge. We also observe that the planets orbit the sun, and the moon orbits the earth, so that the matter in the solar system is not collected in a single lump. The 'chorus line' demonstration in class illustrates that a.