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Magnification explained
The differences between magnification and linear magnification. The basics explained.
Making scale bars
You need to take a picture of a reference (micrometer slide, ruler, etc) and then measure out the number of pixels.
Water sample under the microscope
Standing water is a good source of microorganisms to be observed under the microscope.
Moldy bread. But the spores look nice.
Here I put some mold under the microscope. The spores are visible in bright field as well as in phase contrast. I also look at it using my stereo microscope.
Synthetic fibers look great!
Some fibers in brightfield and darkfield. The fibers have a diameter of about 0.015mm. They are thinner than the cells of some algae. At the end of the video, I superimpose the images of the algae and the fibers to allow for a direct comparison.
Sad: Paramecium squashed to death, organelles spilling out
Pretty sad. 🙁 The ciliate paramecium was squashed to death between the microscope slide and cover glass….
How to view stomata under the microscope
This is a very simple, yet effective way of making cell surfaces visible. Here I am making a glue impression of a leaf surface. The stomata are visible under the microscope.
Why you can not identify bacteria with a microscope alone
The shape of bacteria reveals very little about what type of bacteria they are.
Phase Contrast Microscopy – all you ever wanted to know
Phase contrast microscopy allows you to see transparent and unstained specimens much better. The microscope converts differences in refractive index to differences in brightness.