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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.
why metallic frame used in searles apparatus
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
If W is atomic weight and N is the atomic number of an element, then: (1) Number of e -1 = W- N (2) Number of 0 n 1 = W- N (3) Number of 1 H 1 = W-N (4) Number of 0
to draw v-t graph with variable retardation
lux; lx: The derived SI unit of illuminance equivalent to the illuminance generated by a luminous flux of 1 lm distributed consistently over an area of 1 m 2 ; therefore it ha
Ask An elevator cable can withstand a maximum tension of 19,500N before breaking. The elevator has a mass of 490 kg and a maximum acceleration of 2.24 m/s2 . Engineering safety sta
Presumptuous that it is understood that the object is in front of the mirror and anything on the other side of the mirror is behind the mirror is the following statement sufficient
C- Radiowave Heating( Diathermy) Short wave diathermy utilized electromagnetic wave in radio range ( ~10m ) and microwave range (~ 12cm) .Short wave diathermy penetrate deep into
Derive the relation Relationship between α and β: Beta factor (β) is the current gain factor of a common emitter circuit is defined as ratio of change in coll
Iron is what type of magnetic material? Is it: a) Diamagnetic b) Paramagnetic c) Ferromagnetic d) Non-magnetic Ans: Iron is ferromagnetic type of m
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