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Lambert's laws (J.H. Lambert):
Lambert's first law
The illuminance on a surface illuminated through light falling onto it perpendicularly from a point source is proportional to the inverse square of the distance among the surface and the source.
Lambert's second law
If the rays meet the surface at a particular angle, then the illuminance is proportional to the cosine of the angle along the normal.
Lambert's third law
The luminous intensity of light reduced exponentially through distance as it travels via an absorbing medium.
In a Newton's ring experiment with air film the diameter of nth and (n - 5)th dark rings are 12.2 mm and 8.1 mm respectively. Evaluate the diameter of (n + 5)th dark ring
electric field
what is the electric field when both the charges are same in dipole
Q. State Brewster's law. Brewster's law the digression of the polarising angle is numerically equal to the refractive index of the medium. That is tan ip = μ
Deriving the Relativity of Simultaneity Animation in which shows how the relative nature of the simultaneity of two events must follow from the existence of length contraction.
A wave is a disturbance which transmits power and momentum from one place to the other without the transport of matter.
The spectral lines arising from the transition of electron forms a spectra series. Mainly there are five series and every series is named after it's discover as Lymen series, B
what is semi conductor
Brief about the directory representation in UNIX. A Unix directory is a file having a correspondence among filenames and inodes. A directory is a special file that the kernel m
A force of 25 N is applied vertically at the end of a wrench handle that is 45 cm long to tighten a bolt in the clockwise direction. What torque is required by the bolt to keep the
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