Search found 1655 matches

by Beatsy
Sun Dec 13, 2020 1:08 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Inclusion in quartz grain
Replies: 2
Views: 1168

Inclusion in quartz grain

I found these polished "gemstones" in a £1 bargain bin recently. Tiny little things, probably scraps from tumbling larger stones, but a quick look with a loupe revealed some with interesting occlusions so I picked them up for a high-mag tinkering session. Turned out there were only two different typ...
by Beatsy
Tue Dec 01, 2020 2:22 pm
Forum: General Discussion Forum and Community Announcements
Topic: Zeiss "Lattice Lightsheet" - interesting time-lapses
Replies: 1
Views: 897

Zeiss "Lattice Lightsheet" - interesting time-lapses

https://www.zeiss.com/microscopy/int/pr ... eet-7.html

I'm sure I read about lattice lighting many years ago, but it wasn't this neat. There's a couple of nice clips at the link - "double mitosis" is my favourite. A description of the tech too...
by Beatsy
Wed Nov 18, 2020 11:10 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Shockwave
Replies: 3
Views: 2248

Re: Shockwave

Ta Rik. My theory is that it's literally the beginnings of a splash, albeit created at hypersonic speeds. The aluminium is compressed at the centre first and melts due to the shock. This squeezes out a blast wave that propogates from the centre, thinning and buckling the molten foil which is then fr...
by Beatsy
Mon Nov 16, 2020 11:44 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Shockwave
Replies: 3
Views: 2248

Shockwave

Or, more accurately, the after effects of a shock wave on aluminium foil. The shock was created by smartly clacking a pair of 50mm ball bearings together with the foil trapped between them. Ordinary paper works too but is less interesting. It instantly sublimes into the smell of burning paper (at th...
by Beatsy
Sun Aug 23, 2020 10:46 am
Forum: General Discussion Forum and Community Announcements
Topic: photomesography
Replies: 12
Views: 3287

Re: photomesography

I can't see any missing term. If it's not macro or micro (in scale or by approach) then it's simply "photography". And even if you did find a word, (say "close-up" for example), then the next question will always be "what's that then?". As Rik said, you'll need more words...
by Beatsy
Sun Aug 23, 2020 4:41 am
Forum: General Discussion Forum and Community Announcements
Topic: photomesography
Replies: 12
Views: 3287

Re: photomesography

I just call the whole lot "photo macro micro" in terms of activity and consider all of it simply "photography" when capturing images. The terms, photo, macro and micro are too vague for any useful delineation these days (IMO). The overlap of magnification ranges and equipment used in each genre has ...
by Beatsy
Tue Aug 11, 2020 3:50 am
Forum: Photography Through the Microscope
Topic: Polarisation: a brief dalliance with glycine
Replies: 6
Views: 2034

Re: Polarisation: a brief dalliance with glycine

They look feathery and dreamy. Lovely results, maybe I should get some to play with too. Oh -- another a9 user! Thanks. There are a few cheaply available amino acids. The pure chemicals are sold as health and bodybuilding supplements. All worth a go, but I didn't want to get sucked too far down thi...
by Beatsy
Mon Aug 10, 2020 8:40 am
Forum: Photography Through the Microscope
Topic: Polarisation: a brief dalliance with glycine
Replies: 6
Views: 2034

Polarisation: a brief dalliance with glycine

I saw some polarised shots of glycine in a Facebook group and liked the convincing "landscape look". So I ordered some glycine to see if I could make some landscapes of my own for use in surreal composites (arty farty stuff). I simply made a weak solution and dabbed out a few dots on a coverslip, so...
by Beatsy
Tue Aug 04, 2020 1:20 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Dissection needle prototype
Replies: 3
Views: 2394

Re: Dissection needle prototype

Glue them in the end of a thin hypodermic needle?
by Beatsy
Tue Aug 04, 2020 1:08 pm
Forum: Photography Through the Microscope
Topic: Diatom arrangement at 20x
Replies: 3
Views: 1667

Re: Diatom arrangement at 20x

Lovely shots and arrangements! It is frustrating to lose diffraction colours at higher N.A. I experimented with taking hi-res and low-res images of the same FoV, then use the lo-res one to provide "hue" and the hires for "luminance" (changing layer blend type in HSL mode instead of RGB). There can b...
by Beatsy
Tue Aug 04, 2020 1:00 pm
Forum: Photography Through the Microscope
Topic: Ethylethyl Hydroxy-Paraphenylene Diamine Sulfate
Replies: 3
Views: 1695

Re: Ethylethyl Hydroxy-Paraphenylene Diamine Sulfate

Lovely. And a bonus points for the longest chemical name I've yet seen in the context of polarised crystal shots :D
by Beatsy
Sun Aug 02, 2020 3:05 am
Forum: General Discussion Forum and Community Announcements
Topic: Why aren't flies blinded by the sun?
Replies: 6
Views: 3009

Re: Why aren't flies blinded by the sun?

Thank you for your comments everyone, and Rik for the definitive answer (definitive enough to satisfy my curiosity, anyway). I learnt a lot more about fly eyes in general over the course of this too. All good stuff. Cheers.
by Beatsy
Fri Jul 31, 2020 7:58 am
Forum: General Discussion Forum and Community Announcements
Topic: Dark fish
Replies: 9
Views: 3693

Re: Dark fish

Fish-flocking available soon...
by Beatsy
Fri Jul 31, 2020 7:35 am
Forum: General Discussion Forum and Community Announcements
Topic: Why aren't flies blinded by the sun?
Replies: 6
Views: 3009

Why aren't flies blinded by the sun?

I saw one sit completely still in a penny-sized spot of bright sunlight for 10 minutes before it flew off. It prompted this thought that I've never considered before. Their compound eyes have no eyelids or irises (right?) but do have lenses. So even if bright, visible light is no issue, surely there...