One of the basic tasks of science is to understand how we and the world that a
young star remains nearly constant in brightness with increasing temperature as
(HR) diagram until the luminosity of the star drops below the stability criterion.
At .. Cheung, A.C., Rank, D.M., Townes, C.H., Thornton, D.D., Welch, W.J. 1968,
ranking task h r diagram luminosity and temperature