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• Solar effective temperature: Teff = 5777 K Hubble Constant: H0 = 70.1±1.3 kms-1 Mpc-1 Cosmological Constant: |Λ|≤10-51 m-2 Cosmic background radiation = 2
622 bytes (128 words) - 20:41, 30 March 2009
• tensor is the Cosmological constant is pi=3.1415..., the ratio between a circle's circumference and diameter is the Gravitational constant is the speed
6 KB (1,020 words) - 03:13, 25 August 2009
• places 50% tighter limits on the standard model of cosmology (cold dark matter and a cosmological constant in a flat universe), and there is no compelling
5 KB (792 words) - 20:57, 11 October 2015
• Cosmological constant Why doesn't the zero-point energy of vacuum cause a large cosmological constant? What cancels it out? Why does the cosmological
11 KB (1,766 words) - 18:37, 11 November 2013
• an accelerating rate. The cause of this is hypothesized to be a cosmological constant, a pressure that exists throughout the Universe tending to expand
8 KB (1,221 words) - 04:24, 20 June 2013
• it may be an inert property of empty space (accounted for by the cosmological constant), a possibility first proposed by Einstein. Dark energy accounts
9 KB (1,541 words) - 16:50, 5 February 2013
• expression of and .} Einstein equation corresponds to . Constant is called cosmological constant. Matter tensor is not deduced from symmetries implied
7 KB (1,110 words) - 04:24, 8 November 2009
• be true in competing scenarios. For example, measurements of the cosmological constant has helped narrow down the theoretical possibilities regarding the
27 KB (4,036 words) - 15:22, 3 January 2016
• determined yet, depends basically on the rate of expansion, or the Hubble Constant, of the Universe. In simple terms, the quantity Ω is the ratio of the density
1 KB (188 words) - 17:21, 22 November 2014
• (and therefore outside of the gravitational field), is the gravitational constant, is the mass of the object creating the gravitational field, is the radial
8 KB (1,274 words) - 17:22, 22 November 2014
• making the subject: We now have a formula in the form , with as the constant of proportionality, where m is the mass of the Sun. In 1821, Alexis Bouvard
15 KB (1,572 words) - 11:56, 13 April 2015
• obscured would be transmitted anyway. Einstein's model for the universe was a constant size. He postulated a repulsive (lambda) force that counterbalanced gravity
2 KB (272 words) - 01:24, 9 June 2009
• v • d • e   A-level physics Cosmology Models of the known universe  • Stars and Galaxies  • Structure of the universe  • Information from stellar
1 KB (100 words) - 12:56, 27 May 2015
• A direct current (DC) circuit usually has a steady and constant voltage supplied to it. A direct current does not have a continually changing polarity
3 KB (406 words) - 17:10, 4 April 2015
• times the frequency of oscillations. Gravitational Fields Force is Gravitational Force Constant () times mass one times mass two over radius squared.
2 KB (20 words) - 17:24, 22 November 2014
• form to another, the total amount of energy in a closed system is always constant. There are two main different types of energy; kinetic and potential. Kinetic
1 KB (179 words) - 17:24, 22 November 2014
• waves travel at the same speed (in a vacuum), and that is the universal constant known as the "speed of light," most often abbreviated by the lower-case
3 KB (469 words) - 17:23, 22 November 2014
• (syntax error): {\displaystyle hf = \phi + E_{k_} \,} where h is Planck's constant, f is the frequency of the incident photon, ϕ
5 KB (786 words) - 09:58, 12 July 2016
• decayed. The decay constant has the units in the SI system, but , or even may be used. In the example above, the decay constant, λ, is equal to 0.1
11 KB (1,587 words) - 17:28, 22 November 2014
• charge over time, or dQ/dt. We have defined C=Q/V, so Q=CV. Since C is constant, i = dQ/dt = C dV/dt. Plug this into the equation for power, and we get:
11 KB (1,460 words) - 17:21, 22 November 2014

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