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20 godz. temu · A tangent plane of the sphere with two vectors in it. A Riemannian metric allows one to take the inner product of these vectors. Let be a smooth manifold. For each point , there is an associated vector space called the tangent space of at . Vectors in are thought of as the vectors tangent to at .
Formula: Perpendicular Distance between a Point and a Line of Action. Let 𝑀 be the vector moment of a force, or a system of forces, on a plane about a point. Then, the perpendicular distance between the point and the line of action of the force is given by 𝑑 = ‖ ‖ 𝑀 ‖ ‖ ‖ ‖ ⃑ 𝐹 ‖ ‖.
20 godz. temu · Hubble's law, also known as the Hubble–Lemaître law, is the observation in physical cosmology that galaxies are moving away from Earth at speeds proportional to their distance. In other words, the farther they are, the faster they are moving away from Earth. The velocity of the galaxies has been determined by their redshift, a shift of the light they emit toward the red end of the visible ...
20 godz. temu · The natural logarithm of a number is its logarithm to the base of the mathematical constant e, which is an irrational and transcendental number approximately equal to 2.718 281 828 459. The natural logarithm of x is generally written as ln x, log e x, or sometimes, if the base e is implicit, simply log x. Parentheses are sometimes added for clarity, giving ln(x), log e (x), or log(x).
20 godz. temu · The Internet (or internet) is the global system of interconnected computer networks that uses the Internet protocol suite (TCP/IP) to communicate between networks and devices. It is a network of networks that consists of private, public, academic, business, and government networks of local to global scope, linked by a broad array of electronic, wireless, and optical networking technologies.
20 godz. temu · The Shanghai maglev train (SMT) or Shanghai Transrapid (Chinese: 上海磁浮示范运营线; pinyin: Shànghǎi Cífú Shìfàn Yùnyíng Xiàn; lit. ' Shanghai Maglev Demonstration Operation Line ') is a magnetic levitation train (maglev) line that operates in Shanghai, China.The line uses the German Transrapid technology. The Shanghai maglev is the world's first commercial high-speed maglev ...
20 godz. temu · In physics, the special theory of relativity, or special relativity for short, is a scientific theory of the relationship between space and time.In Albert Einstein's 1905 treatment, the theory is presented as being based on just two postulates:. The laws of physics are invariant (identical) in all inertial frames of reference (that is, frames of reference with no acceleration).
