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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.
blackbody radiation The radiation the radiance at specific frequencies all across the spectrum generated by a blackbody i.e., a perfect radiator (and absorber) of heat. Physic
Rolling Disc Imagine a rectangular tray lying flat on a horizontal table. Suppose in which the tray has vertical sides, and this a plate (or disc) lies flat on the table and r
Illustrate the polarity of Barrier potential. The free electrons which cross over the junction recombine with the holes of p-type and uncover some of the negative ac
Question: Is it probable for the electric field to be zero in a region of space where the electric potential is not zero? Answer: Only if the electric potential has on
IONIC BOND Ionic bonding involves the transfer of electrons from an electropositive atom (an atom that tends to "donate" an electron) to an electronegative atom (an atom that t
What are capacitors used for in induction coils
What is the upside down delta in the Schrodinger Equation?
(i) Lead balls are spherical in shape. (ii) Rain leaves and a globule of mercury placed on glass plate are spherical. (iii) Hair of shaving painting brush, when goes in wate
Calculates the total magnetic flux in ring
How is transmitter used in fibre optic communication system? Transmitter: This consists of analog to digital interface (driver). There, the input signal is converted within
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