Hubble constant, Physics

Assignment Help:

Hubble constant; H0 (E.P. Hubble; 1925):

The constant that determines the relationship among the distance to a galaxy and its velocity of recession because of the expansion of the Universe. As the Universe is self-gravitating, it is not constant truly. In cosmology, it is described as

H = (da/dt)/a,

where a refer to the 4-radius of the Universe. While evaluated for the present, it is written

H0 == H(t = now).

The Hubble constant is not known to great correctness (only about a factor of 2), however is supposed to lie somewhere among 50 and 100 km/s/Mpc.


Related Discussions:- Hubble constant

Nps, NPS, NEQ, and DQE of X- Ray Detector 1. An Example of a determini...

NPS, NEQ, and DQE of X- Ray Detector 1. An Example of a deterministic blurring. The digital flat panel detectors use discrete pixels to collect scintillation light from the ph

Explain concept of power supply, A string of holiday lights has 25 identica...

A string of holiday lights has 25 identical bulbs linked in series. Every bulb dissipates 1.00 W when the string is linked to a 125-V outlet. a. How much power must be supp

Bohr magneton, Bohr magneton (N. Bohr) It is the quantum of magnetic mo...

Bohr magneton (N. Bohr) It is the quantum of magnetic moment. Bohr radius (N. Bohr) It is the distance corresponding to the mean distance of an electron through the nuc

What distance do we utilize for the distance, Presume you are asked to find...

Presume you are asked to find the electric field at point P whose coordinates are (L, y) for the case of a consistent line segment of charge which extends from x=0 to x=L on the x

Electricity, An electric iron draws a current of 0.5A.The voltage is 200V. ...

An electric iron draws a current of 0.5A.The voltage is 200V. Calculate the amount of charge flowing through it in 1 hour.

Parallel combination of two capacitors, A 12 Volt battery is associated acr...

A 12 Volt battery is associated across a parallel combination of two capacitors C1 and C2. The capacitance of C2 is double that of C2.

Pascals principle, Pascal's principle: Pressure applied onto an enclos...

Pascal's principle: Pressure applied onto an enclosed incompressible static fluid is transmitted undiminished to all of the parts of the fluid.

Electron microscopy application in biology and life sciences, What are the ...

What are the electron microscopy application in biology and life sciences? Biology and life sciences as in electron microscopy application: a. Cryobiology and Cellular tomog

Voltage dependent resistor, A VDR is a special type of resistor that chang...

A VDR is a special type of resistor that changes its resistance with rise in voltage. It has a very high resistance at low voltage (below the trigger voltage) and very low resista

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd