As I remember, glycerol has only about 5% higher surface tension than water, in the same time it has 1.2 times higher density, which means, bubble will not be more stable being affected by gravity. Hydrophobic surfaces, covered by tiny fibers or certain chemicals (such as superhydrophobic coatings) ...

Oh, I just realized, that someone could probably use it with files, containing spaces in its name. So, here is more advanced and fool-proof version (it doesn't overwrite originals, saves metadata as text files, creates *.tif files). @echo off identify -verbose "%1" >"%~dpn1.metadata" convert "%1" -c...

This script, saved as Windows batch file (say, "contrast.cmd"), will convert any BigTIFF file of this kind to "regular" one. @echo off convert %1 -channel RGB -contrast-stretch "0x0%%" -depth 8 -compress lzw %1 To make it more usable, save it somewhere, then create a shortcut for it on your Desktop....

Okay, I think I've got it. Here is a sample of what you can get by automatic value range redistribution for the maximum span: https://habrastorage.org/files/4a4/f0e/312/4a4f0e312683463d8fad98a1ee303bb3.jpg It has more contrast than your manually produced image. But you can always play with levels an...

Here is an output of ImageMagick identify -verbose command: Image: Image_687.btf Format: TIFF64 (Tagged Image File Format (64-bit)) Mime type: image/tiff Class: DirectClass Geometry: 4080x3072+0+0 Resolution: 72x72 Print size: 56.6667x42.6667 Units: PixelsPerInch Type: TrueColor Base...

Peter, I would also like to take a look at sample BigTIFF file. Most likely, I can write a simple script utilizing free ImageMagick tool and its histogram manipulation options http://www.imagemagick.org/Usage/color_mods/#histogram Could you upload it to one of file sharing services such as sendspace...

Oh, sorry, I was misinterpreting your question.

cmagno, as I understand, that's an adjustable dual LED light, produced by some unknown company and sold under different brands. For example, Fisher Scientific had it in their catalog: https://www.fishersci.com/shop/products/led-gooseneck-illuminator-2/s01461 Each light head has twelve 5mm LEDs, whic...

Hello, Fan Rule of thumb for magnification and amount of light is that higher magnification leads to less amount of light (with all other parameters unchanged). That is easy to imagine: Assume you have an evenly lit (it doesn't matter, how - by transmitted or reflected/diffused light) surface. Every...

Those dirt stripes look like a partial fingerprint.
So, it probably gives certain idea about size of surface, where it's located.

Microscope ring lights are not necessarily cheaper and better. And that story about pen and pencil is a kind of myth. Astronauts used custom made automatic pencils and fountain pens before Paul Fisher started to produce his "space pen" in 1967. Soviet cosmonauts used wax crayons, but never used regu...

Speaking of optimization tools, I'd say, that you don't need any commercial tools unless you want to play with so called variable compression, when amount of details loss in JPEG file is proportional to something (custom mask, details mask or whatever). In general case, mechanisms, built into IrfanV...

Here are metadata dumps for each JPEG file in the same order: Image: Lens_IrfanView.jpg Format: JPEG (Joint Photographic Experts Group JFIF format) Interlace: None Intensity: Undefined Compose: Over Page geometry: 656x330+0+0 Dispose: Undefined Iterations: 0 Compression: JPEG Quality: 28 Ori...

Charles, I don't have Photoshop installed, so I can't check if your statement about subsampling is correct. If someone will kindly provide a couple of samples - I can analyze them right away.

There are several situations, where graphics should be compressed with options, unavailable in Photoshop at all. As I said before, Photoshop does not allow you to change Chroma subsampling method when saving JPEGs. In simple words, it leads to lower resolution of color channel comparing to lightness...