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What is hologram?
Holography
When an entity is photographed by a camera a two dimensional image of three dimensional objects is obtained. A three dimensional image of an object is able to be formed by holography.
In normal photography the amplitude of the light wave is recorded on the photographic film. In holography both the phase as well as amplitude of the light waves is recorded on the film. The resultant photograph is called hologram.
does lights of different wavelengths help us to see different colour
what happened if we connect ammeter parallel to the resistor, whose current we wnt to find ,rather than in series?
to calculate average speed, divide distance by time?
how to find ratio of magnetic dipole moment of bar magnet
How Does a Cat Land on its Feet? The saying is in which cats always land on their feet. This animation describes how they do this.
what is resistor filter?
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As we know that"The electric potential at a certain point inside the electric field is defined as the amount of work done in bringing a unit positive test charge uniformly (without
Characteristics of resistance:- Similar amount of current passed by each resistance i.e. I = I1 = I2 = I3 = I4 ........ The sum of potential difference across individual res
Q. (a) Determine the'effective focal length' of the grouping of the two lenses in Exercise 9.10 if they are placed 8.0 cm a part with their principal axes coincident. Performed t
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