What would you like to see under a microscope?

By | May 19, 2012

What would you like to see under a microscope? Post your request in a comment here (or email me ).

I’ve just set up a new microscope from AmScope, model T690B with 10MP camera and dark field infinity condenser kit. With the extra attachment I’m ordering, I should be able to magnify about 4000X and capture video.

I’ll post photos of aliens (the small form) if I can get my oil lens working. For now, the 800x world is plenty interesting.

Image: An alien looking ant. His eye is about 300 microns wide. (A human hair cross section is about 100 microns.) I thought he was dead when I placed him on the slide, but his antenna was still moving a bit.

Below: The tip of one of my eyelashes. My scope has both bright field and dark field abilities. The ant head above is bright field, the eyelash below is dark field.”

A dark field illumination set up “works by illuminating the sample with light that will not be collected by the objective lens, and thus will not form part of the image. This produces the classic appearance of a dark, almost black, background with bright objects on it.”

This last thing is a dental rubber band close up.

Microscope Notes to Self:

– Never get oil on any lens other than the 100 objective!
– Clean lenses only with lens paper, not with kimwipes.
– After using the 100X oil immersion lens, never go back to the 40. Go to the 10 if you must. No oil on the 40X objective!
– Total magnification = objective * eye-piece.
– Objectives are 4, 10, 40 & 100, eye pieces are 10 or 25 (I’m using 25x)
– The 10MP camera gives the equivalent of a 40X eyepiece, but there is a 0.5 reduction lens, so the 40X objective *20X camera gives a total of 800X
– The 100X oil immersion objective with the camera will magnify 2,000X
– Bypass the reduction lens (requires extra purchase) will give 40X * 100X = 4,000X.
– 1 micron is 1000 nanometers. A red blood cell is about 7 microns across and 2-3 microns thick. (7 microns is 7000 nanometers).
– I would not be able to resolve something 100 nanometers in size, but should have no trouble seeing red blood cells (when I get the oil immersion fine tuned. It’s tricky.)

0 thoughts on “What would you like to see under a microscope?

  1. jim carlin

    the first time i sat in a science class-or looked thru a microscope
    or studied basic physics or biology
    was when i found out there is a
    Good
    Orderly
    Direction-:)

Leave a Reply