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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.
what are some advantages of the thermo-electric thermometer over the mercury in glass thermometer?
If in a thermoelectric series current flows from the metal occurring earlier in the series to metal occurring later through the cold junction, why in a copper-iron thermocouple, th
Rectifier: Rectifier is a device that converts all alternating current or voltage into direct current or voltage is known as rectifier
thery
one coin is thrown upword from 100m top building with velocity 15m/s .2s later 2nd coin is dropped downword at what distance from top of building 2nd coin cross first? Ans) They
Q. Moment of Solid Sphere About Axis? The instant of enertia for a homogeneous solid sphere about an axis can be found by integrating spherical shells by integrating disks or b
a) A circuit has a voltage of 15V and a current of 2A. the phase angle is 45 degree. Verify the true power of the circuit? (Calculate apparent and true power) b) Verify the appare
A crate with a mass of 210 kg is horizontally accelerated by a force of 95 N. The force is directed at an upward angle so that the vertical part of the force is 47.5 N and the
Q. Explain Rayleigh's criterion of just resolution of two spectral lines of equal intensities giving suitable intensity distribution carves. Show how the resolving power of a pla
why CPH has speed Vc and Vc is greater than c? Answer; since you know photon has spin. Thus the path per time of a point on photon is greater than c it means the speed of photo
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