If I levitate a typical aerosol particle (density ~1.6g/cm^3, size ~ microns) using optical tweezers such as those from Thorlabs, do I have to suspend the particle in liquid (distilled water), or I can suspend it in air directly? If can be done in air, do I have to do this in a super-clean room...
Hi,
My simple telescope consists of a convex lens which images an area with diameter D into the detector diameter d. The object distance is S' and the image distance is s as indicated in the upper graph. Since S'/s=D/d, if I want a smaller field of view (a smaller D), I end with up a larger s...
