Recent content by anandr

Sometimes you may simplify your measurements by using clever (or "very similar") system depending on the wavelength range of interest and precision you want to achieve. For example, here: http://www.thorlabs.de/newgrouppage9.cfm?objectgroup_id=5510 you may find commercially available wire...

See nice explanation here: http://en.wikipedia.org/wiki/Curved_mirror Of course they do apply. But locally :o) If you want to draw a ray reflected by a curved surface, first find the point where incident ray intersects with that surface. Then draw tangent plane to this surface at the...

This one of those simple questions that require a lot of knowledge in order to provide a reasonably simple and correct answer. To be short its like this. Consider a simplest optical system: a flat mirror. Instead of an arrow (standard object for optical systems), we use small lamp that emits...

Diffraction on 1D grating is covered in many physics books. Usually they cover simple case when incident light is coming along the normal to the grating. Sometimes they present slightly more complicated case when incident light is tilted in the plane perpendicular to the stripes (left case on...

Hi Andy Thanks for your reply. Sorry if my question was not clear enough but it seems to me that you misunderstand it a little so I'll try to rephrase it. I'm not asking about replacing an objective in already made microscope but rather about building microscope from spare components by myself...

Hi there As is known using non-infinity corrected objectives in infinity corrected microscopes is not a good idea because of many reasons (image quality will be degraded, back focal plane will be in wrong place, parfocal distance is not preserved, etc.). What about building infinity corrected...