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What is a probe?...

What is a probe?

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What is DNA probe? What are its uses?

What is DNA probe? Write its two uses.

The wavelength of a probe is roughly a measure of the size of structure that it can probe in some detail. The quarks structure of photons and neutrons appears at the minute length -scale of 10^(-15)m or less. This structure was first probed in early 1970's using high energy electron beam produced by a linear accelerator at Stanford's USA. Guess what might have been the order of energy of these electron beams (Rest mass energy of electron=0.511 eV).

Are the nucleons fundamental particles or do they consist of still smaller perts One way to find out is to probe a nucleon just as Rutherford probed and atom . What should be the kinetic energy of an electron for it to be able to probe a nucleon? Assume the diameter of a nucleon to be approximately 10^(-15) m.