does anybody know about the old leica camers?
If you google LEICA you'll find several sites devoted to this camera. You can also contact tamarkin.com - they are LEICA dealers and should be able to help you. You'll need to have all the information possible. Model, serial number, what lens is on i...
What is travelling microscope? What is its purpose? And How is it used?
I'm not aware of a travelling microscope, but you may have misheard the name of a 'Tunneling Electron Microscope'. There are two kinds of ultra-high resolution microscopes - Scanning Electron Microscopes (SEM) and Tunneling Electron Microscopes (TEM)...
biology question?
Compound optical microscopes are typically used to examine a smear /or a thinly sectioned slice of some material. With a few exceptions, they utilize light passing through the sample from below. A comparison microscope, sometimes known also as stereo...