What is the formula for universe?

With ke2=M2VP2πGMo/c2 , general relativity determines the mass of the universe at Planck time, Mo=2.26×10−8kg .

What is the most fundamental equation?

Newton’s Law of Gravity is one of the most fundamental equations in physics.

What is the Friedmann universe theory?

Friedmann universe, model universe developed in 1922 by the Russian meteorologist and mathematician Aleksandr Friedmann (1888–1925). He believed that Albert Einstein’s general theory of relativity required a theory of the universe in motion, as opposed to the static universe that scientists until then had proposed.

What is the hardest math equation in the world?

For decades, a math puzzle has stumped the smartest mathematicians in the world. x3+y3+z3=k, with k being all the numbers from one to 100, is a Diophantine equation that’s sometimes known as “summing of three cubes.”

What does the Friedmann equation tell us?

“The first Friedmann equation describes how, based on what is in the universe, its expansion rate will change over time. If you want to know where the Universe came from and where it’s headed, all you need to measure is how it is expanding today and what is in it. This equation allows you to predict the rest!”

What assumptions did Friedmann make while solving Einstein’s equations for general relativity?

Friedmann and Lemaître adopted Einstein’s assumption of spatial homogeneity and isotropy (the cosmological principle). They rejected, however, his assumption of time independence and considered both positively curved spaces (“closed” universes) as well as negatively curved spaces (“open” universes).

What is Albert Einstein’s equation?

E = mc. E = mc2, equation in German-born physicist Albert Einstein’s theory of special relativity that expresses the fact that mass and energy are the same physical entity and can be changed into each other. Brian Greene kicks off his Daily Equation video series with Albert Einstein’s famous equation E = mc2.

What are the Friedmann equations?

The Friedmann equations are a set of equations in physical cosmology that govern the expansion of space in homogeneous and isotropic models of the universe within the context of general relativity.

What is the Friedmann equation?

The Friedmann equation is a dynamical equation that describes the expansion of the universe. The Friedmann equation is derived from the 0-0 component of the Einstein field equations of General Relativity, on invoking the Friedmann Robertson Walker metric as the correct metric for the spacetime of the universe.

What is the Friedmann acceleration equation?

Friedmann acceleration equation-. H ˙ + H 2 = a ¨ a = − 4 π G 3 ( ρ + 3 P c 2) + Λ c 2 3. where H is a function of time (in this case, the inverse of Hubble time), a is the time-scale factor (0 to 1, now being 1), G is the gravitaional constant, ρ is density, P is pressure, Λ is the cosmological constant and the dots indicate derivatives by proper time.