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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 ...
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 · 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: [p 1] [1] [2] The laws of physics are invariant (identical) in all inertial frames of reference ...
20 godz. temu · The -sphere with the round metric is an embedded Riemannian submanifold of +.. Let (,) be a Riemannian manifold and let : be an immersed submanifold or an embedded submanifold of .The pullback of is a Riemannian metric on , and (,) is said to be a Riemannian submanifold of (,).. In the case where , the map : is given by () = and the metric is just the restriction of to vectors tangent along .
20 godz. temu · Nikolai Chernykh, astronomer, discovered 537 asteroids and 2 comets; Aleksandr Chudakov, co-discoverer of the Earth's radiation belt; Alexander Friedmann, mathematician and cosmologist, discovered the expanding-universe solution to the general relativity field equations, an author of the FLRW metric of Universe
20 godz. temu · Diabetes mellitus, often known simply as diabetes, is a group of common endocrine diseases characterized by sustained high blood sugar levels. Diabetes is due to either the pancreas not producing enough insulin, or the cells of the body becoming unresponsive to the hormone's effects. Classic symptoms include thirst, polyuria, weight loss, and blurred vision.
20 godz. temu · Wi-Fi (/ ˈ w aɪ f aɪ /) is a family of wireless network protocols based on the IEEE 802.11 family of standards, which are commonly used for local area networking of devices and Internet access, allowing nearby digital devices to exchange data by radio waves.These are the most widely used computer networks, used globally in home and small office networks to link devices and to provide ...
