Kirchoff's 3 laws of spectral analysis
A hot solid or a hot, dense gas produces a continuous spectrum.
A hot, low-density gas produces an emission-line spectrum.
A continuous spectrum source viewed through a cool, low-density gas produces an absorption-line spectrum.
center of mass
the average position of the various mass elements of a body or system, weighted according to their distances from that center of mass that point in an isolated system that moves with constant velocity according to Newton's first law of motion
first supernova seen in 1987 first star to be observed before it was a supernova and after. Most of what we know today about SuperNovas came from this. seen in chili by a Canadian
Thermonuclear (Type I a) supernova
when a white dwarf accumulates matter from a companion star at a much faster rate and is pushed over the chandrasekhar limit.
James Clerk Maxwel
The scientist who worked out the mathematics of the connections between electricity, magnetism, and light in the 19th century was
About 1,000,000 years.
Roughly how long does it take for the energy from photons created by hydrogen fusion at the center of the Sun to reach the surface of the Sun?