Internet Encyclopedia of Science
STELLAR ASTROPHYSICS
GRAVITATIONAL PHYSICS
A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z

                   HOME
ABOUT
CATEGORIES
USE OF TEXT AND IMAGES
NEWSLETTER

  



Jeans length



The critical size of a gas cloud, of a given temperature and density, above which the cloud must collapse under its own gravity. Below this size, the cloud's internal pressure is enough to resist collapse. The Jean's length, named after James Jeans, is given by

r = √(15kT / 2πdGm)


where k is Boltzmann's constant, T is temperature, d is density, G is the constant of gravitation and, m is mass.


Related categories

   • STELLAR ASTROPHYSICS
   • GRAVITATIONAL PHYSICS


Also on this site:

Encyclopedia of Alternative Energy & Sustainable Living
Encyclopedia of History





BACK TO TOP