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Cosmic background radiation; primal glow
The background of radiation typically in the frequency range 3 x 1011 to 3 x 108 Hz discovered in space in the year of 1965. It is supposed to be the cosmologically redshifted radiation free through the big bang itself. Currently it has an energy density in empty space of about 4 x 10-14 J/m3.
The resistances of commercially-available discrete resistors are restricted to particular sets. For example, the available values of resistors with 10% tolerance are selections fro
Construction of UJT The fundamental structure of a UJT is illustrated in fig. (a). It comprises an n-type silicon bar that is lightly doped. Two end connections are taken fr
what is motion?
Spinning Charges and an Inhomogeneous Magnetic Field 2 A spinning charged object passes by an array of 3 magnets every generating an inhomogeneous magnetic field. This animati
how increase and decrease in the area of capacitor affects and how the space maintained between two plate affect the capacitor with the help of diagram.
Uniformity principle (E.P. Hubble): The principle that the laws of physics here & now are not distinct, at least qualitatively, from the laws of physics in previous or future
Specific heat of a gas is numerically equivalent to the amount of heat essential to raise the temperature of unit mass of gas by 1 0 C. In order to raise the temperature of unit ma
Under particular condition, light can also suffer inelastic scattering from molecules in which it's wavelength changes.
What is the work done to take a particle of mass m from surface of the earth to a height equal to 2R (R=radius of earth )? Ans) Initial PE= - GMm/R Final PE = - GMm/3R
In the nucleus of 20 Ca 40 there are: (1) 40 protons and 20 electrons (2) 20 protons and 40 electrons (3) 20 protons and 20 neutrons (4) 20 protons and 40 neutrons
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