- #1
pmb_phy
- 2,950
- 1
In the past I've spoken about mass a kagillion times. There was one aspect that I had to hold off on until I taught myself the details and meaning to a good level of understanding. I've now come to that level and have made another web page to describe it. The aspect I'm speaking of is "active gravitational mass." The page is at
http://www.geocities.com/physics_world/gr/active_grav_mass.htm
You'll note that active gravitational mass is identical to inertial mass (what some people call "relativistic mass") and that, for a perfect fluid, it is a function of the fluid pressure.
For those of you who have Schutz's new book "Gravity from the Ground Up" will want to look on page 194 box 15.4 - "How pressure resists acceleration"
Pete
http://www.geocities.com/physics_world/gr/active_grav_mass.htm
You'll note that active gravitational mass is identical to inertial mass (what some people call "relativistic mass") and that, for a perfect fluid, it is a function of the fluid pressure.
For those of you who have Schutz's new book "Gravity from the Ground Up" will want to look on page 194 box 15.4 - "How pressure resists acceleration"
Pete