Posts by al'be:do
- 14.12.2005, 00:55
- Forum: Physics and Astronomy
- Topic: Acceleration of the Expansion of the Universe
- Replies: 3
- Views: 3327
Re: Acceleration of the Expansion of the Universe
The Hubble Term is the measure for the expansion speed. The last measurement in the "H0 Key Project" with the HubbleSpace Telescope lead to the value of 71 (+/- 6) km s-1 Mpc-1. That means for every megaparsec (1 million parsecs, 3261633 lightyears) away from the spectator the expansion speed rises ...
- 14.12.2005, 00:20
- Forum: Physics and Astronomy
- Topic: Planetary visual magnitudes and phase integrals
- Replies: 2
- Views: 2723
Re: Planetary visual magnitudes and phase integrals
They definitely depend on the Phase at a given time. That's why it's called phase integral. Here's the definition of the phase angle: http://en.wikipedia.org/wiki/Phase_angle_(astronomy) One thing you told cannot be. The phase integral MUST be between 0 and 1 and never can be greater or smaller than...