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Making a simple refracting telescope
To make a simple telescope, two cardboard tubes will be needed, one fitting inside the other. It is not possible to make a satisfactory telescope unless good lenses are available, a fact which was soon discovered by early experimenters.
A linen tester (sometimes a stamp magnifier also) has lenses which are achromatic, that is corrected for colour distortion. Like lens of focal length 2 or 3 cm will provide a suitable eye-piece when mounted in a cork with a hole in it.
Two parallel plates having a p.d. of 200V among them are spaced 0.8mm apart. What is the electric field strength? Find also the flux density when the dielectric among the p
what is atom
Kinematic chain related to an assembly of rigid bodies connected by joints that is the mathematical model for a mechanical system. As in the familiar use of the word chain, the rig
One side of impregnated paper capacitors is sprayed with metal. When such paper is rolled, its gives higher capacitance for a given value. This capacitor has a self healing proper
give brief detail of heat loss in cylindrical pipe
Describe divergence of a vector function in terms of integrals
Explain 'drift velocity of free electrons'? Derive Ohm's law on the basis of the theory of electron drift.
What makes a good common end? The capacity to hold the fibers always and flushes, lack of adhesives, absence of packing losses and optical polish.
What are Switches and Fuses? As mentioned earlier, short circuits can be damaging to the voltage source. One way we have developed to protect equipment is to use fuses i
workind and defination and symbol of zener diode
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