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Olbers' paradox (H. Olbers; 1826):
If the Universe is uniform, infinite & unchanging then the whole sky at night would be bright regarding as bright as the Sun. The further you looked out to space, the more stars there would be, and therefore in any direction wherein you looked your line-of-sight would impinge upon a star eventually. The paradox is resolved through the big bang theory, which puts forth that the Universe is dynamic, non-uniform and (probably) finite.
Q. What is neutral temperature? Maintain the temperature of the cold junction constant the temperature of the hot junction is gradually increased. The thermo emf increase to a
find the angle between two vectors if thier resultant is equal to either of them
How do objects move in one dimension?
In general the total energy of a harmonic oscillator having of two parts, potential energy (P.E) and kinetic energy (K.E.), the former being because of its displacement from the m
how Michelson interferometer can be used to measure the wavelength of sodium light.
COLLISION: "When two or more bodies come close to each other, so that there is some part of interaction among them, with or without the presence of external force, we say tha
Hubble constant; H0 (E.P. Hubble; 1925): The constant that determines the relationship among the distance to a galaxy and its velocity of recession because of the expansion of
What is electric field and formula for electric field is?
How is radiation emitted from the body? The body radiates energy by thermal conduction by the skin to the air, clothes, etc, around the body. A small amount of energy would als
Consider the temperature distribution in a 1D flat plate, insulated at x = L and exposed to convective heat transfer at x = 0. On the axes below, sketch what the distribution looks
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