Understanding sampling theorem

[gobi1990]

An analog signal is sampled at duration of T second, after that we get sampled time domain signal. FT of that sampled signal gives spectrum.

What is that spectrum.? For one time sample in TD, gives one spectrum.?

 

[nomigoraya]

FT gives us the frequency components which make that sampled signal.
Take analoge signal as menue card take sampled signal as a one whole dish from that menue card and FT as ingredients of that dish it is the simplest analogy