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

Condition for diffraction, Why diffraction can't occur if slit width is les...

Why diffraction can't occur if slit width is less than the wavelength of the light? Can you explain?

Numerical 4.8, two bodies of masses 200 g and 300 g are tied to a string wh...

two bodies of masses 200 g and 300 g are tied to a string which is passed over a pully.if pully has no weight and friction,then find the accerlation of the bodies and tension in th

Single pv cell design., give the complete explaination with design formulae...

give the complete explaination with design formulae of single pv cell?

Infra-red detectors, Part A) Infra-Red (IR) Detectors: An IR detector...

Part A) Infra-Red (IR) Detectors: An IR detector has an impedance of Z= (400+j200) ? . . During design tests the detector current is measured as 4 µA. What is

Ac, average or mean value of AC

average or mean value of AC

Give the location of the image and the magnification, Q. A 4.5cm needle is ...

Q. A 4.5cm needle is placed 12cm away from a convex mirror of focal length 15cm. Give the location of the image and the magnification. Describe what happens as the needle is moved

., 100 =6=4=9=7=9

100 =6=4=9=7=9

Thermodynamics, according to the first law of thermodynamics , obtain the r...

according to the first law of thermodynamics , obtain the relationship between specific hears of gases

Light, diffenrence between pure and impure spectrum.

diffenrence between pure and impure spectrum.

Nicol prism, applications of nicol prism

applications of nicol prism

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