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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.
When current is passed by a junction of two dissimilar solids, the temperature is either evolved or absorbed at the node. This effect is known as Peltier effect
As regards cases involving the application of the Biot-Savart Law to calculate the magnetic field due to an electric current which of the following statements about why it is relat
write all equationes of projectile motion used in calculation of vertical and horizontal motion
Define, with the help of diagram, the principle and working of an a.c. Generator. Write the expression for the e.m.f. generated in the coil in terms of its speed of rotation
Transition temperature It is temperature (based on the substance involved) below which a superconducting substance conducts electricity with zero resistance; as a result, the t
the average speed of an object over a given time duration is 6 m/s. If it travels first half of the duration with a constant speed 4 m/s, its speed during the next half duration is
A battery and the plug points in the switch boards home give potential difference. What is the disimilar in the nature of the current given by the two? Compare and contrast the tw
It is the molecular weight of a substance expressed in grams ; the basic unit of amount of substance adopted under the Systeme International d''Unites.
When two waves of exactly similar frequency (coming from two coherent sources) travels in a medium, in the similar direction simultaneously then because of their superposition, at
What is the path of the magnetic field at a point due east of a straight wire carrying a current due north?
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