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Photomultiplier tube(PTM)
it can detect a weak flash of light and estimate the amount of light .The principle of operation (fig(4)) a light photon released electron at the photocathode that is accelerated to the first dynode where it caused several more electrons to be emitted and these electrons are accelerated to the second dynode which is more positive than the first and farther multiplication takes place. Most PTM have 10 dynodes so electron multiplication of 105 to 106 times and it need a high voltage (~1000 V)
What is dychroic filter? A thin flat piece of glass along with a metal deposition in one of the surfaces applied into a high vacuum environment. There metal layer, only some at
Kirchoff's Voltage Law determines that the algebraic sum of the products of currents and resistances in every of the conductors in any closed path in a network plus the algebraic
Q. Orbital Velocity for Low Earth Orbit Neglecting air friction an object will sustain a low altitude orbit when the centrifugal force due to its motion in a circular orbit is
The position of an airplane as a function of time is shown in the figure below. a. What is the average velocity of the airplane? b. What is the average speed of the air
give applications of resonance
Properties of Lines of Flux To make the imaginary lines of flux describe the behaviour of the magnetic field we must give them appropriate properties. Thus lines of flux have
Does CPH mass increase? Answer; Never, mass of CPH is constant, as like its speed.
comparison of magnetic moments using an vibrational magnetometer
Inertia in a pile of books Stack up a pile of books. Grasp hold of the single at the bottom of the pile and give it a quick jerk. Can you delete it without upsetting the whole
Determine the refractive index of a pair of media provided critical angle as 40°. Determine the angle of deviation generated by a thin prism of refracting angle 5° and refractiv
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