At the surface of the sun, the temperature is approximately 5800 K.
(a) How much energy is contained in the electromagnetic radiation filling a cubic meter of space at the sun’s surface?
(b) Sketch the spectrum of this radiation as a function of photon energy. Mark the region of the spectrum that corresponds to visible wavelengths, between 400 nm and 700 nm.
(c)What fraction of the energy is in the visible portion of the spectrum? (Hint: Do the integral numerically.)
THE HEART OF THE MATTER ● the lighter chemical elements are the most abundant on earth ○ the heavier (gold) = more rare ● both space and time came out of the Big Bang ● string/loop of energy is the one basic particle ● gravity doesn’t fit or work well with quantum theory ● string theory = only theory so far that reconciles Quantum Theory and gravity ○...