Radiation has dual nature, i.e., it possesess the properties of both, wave and particle. This prompted de-Broglie to prodict dual nature of moving material particles. Thus waves are associated with moving material particles which are called matter waves. The wavelength of matter waves is given by `lambda=h/(mv)`, where m is the mass, v is the speed of the particle and h is Planck's constant. Read the above paragraph and answer the following question:
(i) How was the wave nature of electron established?
(ii) What are the de-Broglie wavelength associated with a particle (i) at rest (ii) moving with infinite speed?
(iii) What are the basic values displayed by this study?