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Posts tagged ‘microscopy’

Microscopic Images of Broken Metal

The following pictures were taken through a Premium 10X/30X Inspection Microscope using a Digital Microscope Eyepiece in one of the eyepiece holes.

The object being imaged is a broken piece of steel, damaged by long-term fatigue. Forease of description we will refer to it  as a stage prop fencing blade. It had broken under duress after many ‘stabbings’. The crystal pattern of the fatigued steel can be seen surrounded by a sheath of intact metal. One minor issue with using a Video Eyepiece in an inspection microscope is that they may have trouble focusing on objects with a lot of depth. Since the broken edge of this blade had to be held at an angle to see the broken portion there are parts that did not end up in focus.

The first image was taken at 10X:

Broken Stage Blade at 10X

Broken Stage Blade at 10X (scroll down for the 30X image)



































The second image was taken at 30X:

Broken Blade Edge at 30X

Broken Blade Edge at 30X

At 30x the depth of focus becomes more of an issue (more a problem with many inspection microscopes at higher powers, actually), but the crystalline nature of the internal metal can still be seen quite well.



Comparison Microscopes

Often mentioned on forensic-based TV cop-shows, but rarely actually shown , Comparison Microscopes are excellent tools not just for forensic work, but also for comparing different tissue types, teaching, and for checking diseased vs. healthy tissues. They are used to compare the samples on two slides side-by-side.


They look clunky, because they essentially are just two microscope bodies attached a the top by an optical bridge. The mechanics are 2 high quality binocular microscopes which combine 4 DIN objectives (or 5 in the advanced model), a large stage, a mechanical stage, coarse & fine focus,  and N.A. 1.25 Abbe Condensers among many other features.

To do a comparison of slides, you place 1 slide on each stage, bring them to focus, and make adjustments on the optical bridge.

The resulting image shows the samples side-by-side. Here is one example of a human stomach cell side-by-side with a human kidney cell:

Stomach To Kidney Comparison Photo

Stomach To Kidney Comparison Photo

Comparisons can be made with almost anything that can be put on a slide. Comparison Microscopes are invaluable in teaching students to see diseased tissues vs. healthy, forensic work, and a host of other fields.

Want to buy a standard Comparison Microscope?

Want to buy an advanced Comparison Microscope (5 DIN Objectives)