If the surface temperature of the Sun doubled while its size remained the same
it would radiate twice as much energy.
it would radiate four times as much energy.
it would radiate eight times as much energy.
it would radiate sixteen times as much energy.
it would radiate the...
The absorption lines for a cool thin gas are identical in wavelength and frequency to the emission lines of the same gas if hot enough to glow.
True or False?