Documentary about Einstein

value of e

this is the value of e e (mathematical constant) The number e is an important mathematical constant that is the base of the natural logarithm . It is approximately equal to 2.71828, [1] and is the limit of (1 + 1/ n ) n as n approaches infinity, an expression that arises in the study of compound interest . It can also be calculated as the sum of the infinite series [2] The constant can be defined in many ways; for example, e is the unique real number such that the value of the derivative (slope of the tangent line ) of the function f ( x ) = e x at the point x = 0 is equal to 1. [3] The function e x so defined is called the exponential function , and its inverse is the natural logarithm , or logarithm to base e . The natural logarithm of a positive number k ...

beyond our solar system

Oddballs: The strange worlds beyond our Solar System Continue reading the main story Related Stories A home from home: Five planets that could host life Over the last two decades, astronomers have catalogued around 850 planets outside our Solar System. And the search for worlds orbiting other stars is turning up some weird and wonderful characters. From a scorched gas giant that's darker than coal, to a planet packed with diamond, here are some of the oddballs-in-chief. Quadruple sunset In a memorable scene from the film Star Wars, Luke Skywalker looks out over the horizon while two suns set in the sky of his home planet Tatooine. Astronomers have already discovered several "Tatooine" systems, where planets orbit double stars. But this year, a team comprising volunteers and professional astronomers reported finding a planet illuminated by four stars - the first known of its type. Continue reading the main story PH1 Type: Giant planet Distance: ...

aurora

aurora : this is the fantastic image of south pole auroa . The image has been taken by the nasa from space which makes the very good view of auroa ...

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