question_answer 34)

The wavelength of a probe is roughly a measure of the size of a structure that it can probe in some detail. The quark structure of protons and neutrons appears at the minute length -scale of or less. This structure was first probed in early 1970's using high energy electron beams produced by a linear accelerator at Stanford, USA. Guess what might have been the order of energy of these electron beams. (Rest mass energy of electron = 0-511 Me V).  

Answer:

Rest mass energy Using the relation Total energy of the particle Thus, the energy of the proton ejected out of the linear accelerator is of the order of  BeV.