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Ultraviolet catastrophe:
A shortcoming of the Rayleigh-Jeans formula, that tries to explain the radiancy of a blackbody at several frequencies of the electromagnetic spectrum. It was obviously wrong since as the frequency enhanced, the radiancy enhanced without bound; something quite not observed; it was dubbed the "ultraviolet catastrophe." It was later on reconciled and described by introduction of the Planck radiation law.
THIN FILM TECHNOLOGIES The various thin technologies currently being developed reduce the amount of light a bsorbing material required in creating a solar cell. This
In a Fraunhofer diffraction due to single slit the 1 st order minimum is obtained at angle 30 0 with the incident beam. What is the width of the slit if wavelength of i
The density of gasoline at 0 degrees C is 0.68 x103 kg/m3 What is the density on a hot day when the temperature is41 degrees C? What is the percentage change (+/-)?
What are a few of the differences between resistance and resistivity? Answer: The resistance R of wire depends on both the size and shape of the wire and on the resistivity
If the distance between two objects, each of mass 'M', is tripled, the force of attraction between the two objects is: a) 1/2 the original force b) 1/3 the original fo
Half shade and Biquartz
Rutherford's alpha-scattering experiment recognized that the mass of atom is concentrated with small positively charged region at the centre which is known as 'nucleus'. Nuclei
Q. Define magnetic flux? Magnetic flux ( φ ): The magnetic flux (φ) correlated with a surface held in a magnetic field (B) is defined as the number of magnetic lines of f
Figure shows a simple model of spring-mass system. The mass is released from the rest with the springs un-stretched. It's downward acceleration is a=9.81 - 15.24y m/s 2 where y is
what is specfic gravity
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