Info

a Abundances are given to 3-4 significant figures. Many are known to better than this. b The helium values correspond to those before the conversion of some of the hydrogen in the Sun's core to helium, i.e. to the Sun at its formation.

Table 1.6 Some important constants

Name

Symbol

Value

Speed of light (in a vacuum)"

c

2.99792458 x 108m s-1

Gravitational constant*

0 0

Post a comment