Is it possible to homothetically dilate a signal?

Imagine I have a very short signal that I would like to observe, however the frequency is too high for simply viewing it on an oscilloscope. Is there any possible way to "dilate" it over time? Obviously, I am not talking anything digital, probably some crystal retranslation...  Somehow, I haven't managed to find anything using the most obvious way (googling), but, probably, I don't know how to.

Question by gruffalo child   |  last reply