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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.
Coanda effect The effect which indicates that a fluid tends to flow along a surface, instead of flow through free space.
explain briefly voltaic cell
Uncertainty principle (W. Heisenberg; 1927): A principle, central to quantum mechanics, that states two complementary parameters (such as position & momentum, energy & time, o
What is the Specific Heat of Copper? Ans) 387 J/Kg. C or 0.0924 Cal/g.C
Carnot's theorem (S. Carnot) The theorem which states that no engine operating among two temperatures can be more capable than a reversible engine.
Can you differentiate between half wave plate and full wave plate?
a body of mass M is acted upon by a force F and the acceleration produced is a.if three forces each equal to F and inclined to each other at 120degrees act on the same body,the acc
whats matter
What is Gravity Gravity is a force which holds you in your seat. If I pull the chair out from under you, what will take place? Ouch! Gravity fast pulls you down to the floor. I
What is a Temperature Scales? Fahrenheit, Celsius and Kelvin were scientists who studied how heat and temperature work. The most familiar scale to Americans (until the time tha
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