You know they can't see them

Did you know that normal optical microscopes actually can't see anything as small as a nanometer. It just isn't possible. Apparently something in the realm of 200nm's is the limit.
It sort of begs the question that if it can't be seen, not only how do you know it's there, but how the heck do you build things this size.
Anyway not to worry, just in case you loose your nano whatever it is you have, a new optical imaging device is under development at NSIT.
"In a preliminary test of the embryonic technique, NIST scientists used violet light with a wavelength of 436 nanometers to image features as small as 40 nanometers, about five times smaller than possible with a conventional optical microscope."
Let explain what this means, find the smallest crumb you can and put on about 10 pairs of gloves and then try to pick up the crumb. Now honestly I did try to break this story down further for you, but, a guy can only take so much of light particles scattered over a page to try and find a full stop, to make any sense to anyone. No I am not a scientist. Those of you who are go have a read here.