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(i) The procedure of ejection of electrons from a metal surface by the application of heat is known as thermionic emission and emitted electrons are known as thermions and current flowing is known as thermion current.
(ii)Thermions have dissimilar velocities.
(iii)This was discovered by Edison
when told that a diffraction grating has 80 lines per mm we need to work out what 1 line would equal. I have the solution but i cannot figure out how they got 1 line to equal 1x10
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i need to demonstrate the magnetic properties as a part of my assignment. then how can i do that?
HOW CAN A PURE SPECRUM BE PRODUCED IN THE LABOLATORY
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SECOND DEFINITION OF IMPULSE: It can be described as, "The change in momentum produced by the force of impulse".
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