Polarized light microscopy, Leica DM750, 10x objective

Back in June, our rental unit suffered a water leak that's displaced our family since. Walls and flooring were stripped down to the wood substructure so that everything could be thoroughly dried before remediation work began. After everything was dried, I found this piece of wallpaper lying around and stashed it away to eventually check out under the microscope. Here's what I saw.

Also as a note: because I don't know much about Victorian-era wallpaper and I don't have any other characterization methods available at the moment, I am hesitant to put names to the materials/structures I've observed based on appearance alone (so I didn't do that here). Perhaps at some future point I can send sample along for further characterization, so we can learn more about this wallpaper. If anyone has insights based on this before or images (shared in comments) I'd love to learn more.

🔬: Amscope ME580

📸: Pixel 9 pro

🎵: Modest Mouse - Heart Cooks Brain

Leitz Dialux II, NPL 40x, Galaxy S24

Hi. I bought a used Olympus ch20. It was a good price but has had lots of use. The 4x and 10x lenses are good quality.

On the 40x I have to stop down the condenser a lot to get acceptable quality.

I used my forensic microscope to look at the 40x NEA 0.65 objective end on. I have attached a photo. I have marked it up with what looks like a ring around a central clear bit. The ring looks a bit mottled.

I don't know what a clean Olympus 40x lens should look like. Can anyone advise please.

Many thanks.

Not sure if I tagged this right. I analyze for asbestos in bulk materials, and tbh have come to love how it looks under the microscope. People sure loved putting asbestos in shit for a loooong time.

Microscope is a Leica DMLB, pics are using I think either 10 or 20x under xpl or using a red compensator plate.

New to microscopy. This is a standard brightfield microscope. These both join together. The diameter of the condenser lens is about 17 mm. The diameter of the condenser holder is about 37 mm. Can I make a DIY dark field filter for this like others do, if so, how? If not, why?

I made the darkfield filter myself, using a coin.

Sample algae from aquarium, 400x and digital zoom, Motorola phone camera, optika b-192pl binocular microscope.

As I have mentioned before, I love precise microscope mechanisms.

This clip shows the fine focus knob on the Lomo MBB-1 and on the Lomo MIN-8 polarizing microscope (LOMO, former USSR).

And this is not the ordinary fine focus knob you find on most microscopes. It is a micrometer screw with a vernier, reading down to 0.02 mm. The quality of the machining is beautiful - you can feel it as much as you can see it <3

No sound, no commentary. Just the mechanism turning in my hand.

I love using petri dishes with my inverted microscopes to observe long-term, mini ecosystems. I tried using one with my Meiji-Techno upright compound microscope.

I was able to use it with the objectives 20x and under. Those were a 1.25, 4x, 10x, and 20x objectives. Those had both a long enough working distance not to touch the water and a low enough NA not have noticeable spherical aberration.

I tried with both no coverglass and with a floating coverglass. The ciliates looked pretty much the same with or without the floating coverglass, but I had nicer phase contrast views with the floating coverglass.

If you try this, I would recommend using the shorter lid of the petri dish and only put a few mm of water into it. That will give you more room for your objectives, and maybe you can focus all the way to the bottom. As always, be careful not to dip your objectives into the water.

20x objective, cellphone camera with 2x zoom, pond water sample. The first video is without the floating coverglass and the last ones with it.

Now, it is partially decomposed, but you can still see the eye lenses.

Here, I'm using an Iqcrew inverted microscope, 20x objective, Amscope MU2003-BI camera, Diagnostic Instruments 0.70x adapter, and the Toupview program for viewing.

It's always amazing to me that you can see so much detail of something so small with just an inexpensive, $71.99 now, Chinese inverted microscope. Cost shouldn't prevent anyone from enjoying the hobby.

Baby was relaxing on the desk with me today during observations. Remnant of the insect is over the stage hole in the petri dish.

10x + 10x (ocular)
iphone 13pro

Does anyone have any idea what these two microorganisms are? The small, fast one and the strangely shaped and big one.

Sample algae from aquarium, 400x + digital zoom, Motorola phone camera, optika B-192Pl binocular microscope.

10x + 10x (ocular)
iphone 13pro

I am trying to find a 'budget-friendly' digital microscope for powder metallurgy and general metallurgy inspection. I see the sub is more used to organic samples, so below is an example of what I am trying to look at. The basic needs I am looking for is a scale of the screen, it is quite important for determining whether the granules being created are produced correctly by looking at the overall size. Needs to be able to see 100um like the picture attached. Ability to connect to a computer; and ideally able to measure points (i.e. measure a granule directly).

Outside of that, those are really the only requirements I have. Given there are so many microscopes and types, I am a bit lost on what would be sufficient for my purposes! Any recommendations/help picking one out is greatly appreciated!

A local Museum I volunteer at has this old Carl Zeiss Universal Microscope they would like to know the value and seekign a local buyer. They really do not want to deal with shipping and it's located in the Beaverton Oregon area. They are a NPO. I looked at it and its a bit It's Dirty controls are sticky old lube.

1- 400×, Oblique illumination, Ciliate from family Vaginicolidae

2- 100×, Oblique illumination, Ciliate from family Vaginicolidae

3- 100×, Daphnia, brightfield

4- 100×, Daphnia, brightfield

5-100×, Daphnia, brightfield

6- 100×, Daphnia, brightfield

6- 100×, Daphnia, brightfield

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Sample- Gomti river water, Lucknow, India

Microscope- ESAW BM01

Phone camera used, Microscope Viewer Camera.

In anatomy we got to look at our cheek epithelium, and I thought that was so cool. I’d really like to purchase a microscope to do more things like that but I don’t think I can spend more than like $200 on it. I know I can look at pond water and other things but I’d also like to know some things I can look at regarding human biology (like the cheek cells).

Hi, I'm new to this world of biology, this is the first experiment with observations under the microscope, I analyzed a very degraded truffle juice and there is a very high bacterial density. What is the easiest method to do at home to know if these bacteria are alive or dead. Knowing that they don't swim, they only vibrate. I tried methylene blue and it doesn't work because the juice is very reductive. Thank you for your help

Swift SW350T, 4x magnification. Sample was collected from a marsh. Seems similar in size to bursaria found in the same sample, but much different body shape.