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B λ (T) is the Planck function for temperature T and wavelength λ (units: power/area/solid angle/wavelength - e.g. watts/cm 2 /sr/cm) I λ is the spectral intensity of the radiation entering the increment ds with the same units as B λ (T) This equation and various equivalent expressions are known as Schwarzschild's equation.
In nuclear physics, the Bateman equation is a mathematical model describing abundances and activities in a decay chain as a function of time, based on the decay rates and initial abundances. The model was formulated by Ernest Rutherford in 1905 [ 1 ] and the analytical solution was provided by Harry Bateman in 1910.
See Weight for detail of mass/weight distinction and conversion. ... = 0.514 77 3 m/s mach number: M: Ratio of the speed to the speed of sound [note 1] ...
Relatively few investors will buy Berkshire Hathaway (NYSE: BRK.A) (NYSE: BRK.B) class A shares as 2024 draws to a close. There's a good reason why: The cost of one class A share of Berkshire ...
In Q1, Berkshire repurchased $2.6 billion worth of shares, while in Q2 it was down to only $345 million. The past quarter was the first quarter that Berkshire didn't buy back its own stock since 2018.
Berkshire Hathaway B-shares, which trade at 1/1,500th the price of the A-shares, were down as much as 1.1% on Monday and appeared largely unaffected by the error, though volatility was pronounced ...
It was originally only used to describe the perovskite ABO 3 structure, but now tolerance factors are also used for ilmenite. [2] Alternatively the tolerance factor can be used to calculate the compatibility of an ion with a crystal structure. [3] The first description of the tolerance factor for perovskite was made by Victor Moritz Goldschmidt ...
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