Search found 223 matches

by tgss
Mon Mar 14, 2022 11:18 am
Forum: Introduce yourself
Topic: New User from Canada
Replies: 3
Views: 1491

Re: New User from Canada

And another welcome from South-West Ontario. Hope you enjoy the forum.

Tom W.
by tgss
Mon Jan 24, 2022 12:47 pm
Forum: Articles and images to be published
Topic: Making Permanent Microscope Slides of Insects
Replies: 7
Views: 12461

Re: Making Permanent Microscope Slides of Insects

photomicro mentioned the compilation of Ernie Ives articles by the Postal Microscopical Society. The two volumes have been available for some time, I purchased my copies a year ago, and in fact the print run may have sold out by now. The books cover preparation of many kinds of specimens, but a larg...
by tgss
Sat Dec 18, 2021 6:02 pm
Forum: Morphology and Behavior
Topic: Mouse Hair
Replies: 5
Views: 3514

Re: Mouse Hair

Thanks for the link Michael. Fascinating paper.
Tom W.
by tgss
Thu Dec 16, 2021 2:10 pm
Forum: Introduce yourself
Topic: Hello from the Orkney Islands
Replies: 3
Views: 1762

Re: Hello from the Orkney Islands

Welcome to the group RobCant. Whatever questions you have or info you need I'm sure you'll get some good guidance from some very experienced group members.
Tom W.

From a currently very windy Ontario Canada, but probably not as windy as the Orkneys!
by tgss
Sat Nov 27, 2021 10:20 pm
Forum: Introduce yourself
Topic: Hello from Canada
Replies: 6
Views: 2566

Re: Hello from Canada

Welcome from another Canuck. I'm sure you'll find plenty of information and inspiration on the forum, and if you can't find it, just ask.
MD - canine reproduction - OK??? I'm assuming this is not a holdover from your professional life!
Regards
Tom W.
by tgss
Mon Nov 08, 2021 7:40 pm
Forum: Resources (online, books etc.)
Topic: Protozoology by Richard R Kudo
Replies: 4
Views: 4818

Re: Protozoology by Richard R Kudo

Also available on the Internet Archive is:
An illustrated guide to the protozoa (Volume 1) by The Society of Protozoologists, Copyright 2000, so a bit more modern.
https://archive.org/search.php?query=an ... 20protozoa

Tom W.
by tgss
Sun Nov 07, 2021 11:45 pm
Forum: Microscopes and optics
Topic: Looking for technical info early microscopes
Replies: 9
Views: 2669

Re: Looking for technical info early microscopes

Some of these are outside your time period of interest, but may be insightful, and most have fairly extensive references for potential follow-up. Optical Properties of the Lenses of an Early 19th Century Cuff-Type Microscope https://www.rms.org.uk/study-read/infocus-magazine/infocus-listing/optical-...
by tgss
Tue Oct 26, 2021 12:07 pm
Forum: Specimens, samples and slides
Topic: Polarized Centipede Fangs
Replies: 7
Views: 2827

Re: Polarized Centipede Fangs

Wonderful pictures Tony.
Tom W
by tgss
Sun Oct 24, 2021 10:32 pm
Forum: Specimens, samples and slides
Topic: Simple whole mounts
Replies: 12
Views: 5053

Re: Simple whole mounts

Hi Tony
It's on my list, whatever that means :lol:
More excellent images in your post. Thanks again.
Tom W.
by tgss
Sun Oct 24, 2021 1:26 am
Forum: Specimens, samples and slides
Topic: Simple whole mounts
Replies: 12
Views: 5053

Re: Simple whole mounts

Very nice image Tony, and a good description of the process. Thank you.
Tom W.
by tgss
Sun Oct 17, 2021 12:12 pm
Forum: Pictures and Videos
Topic: Velvet Mite
Replies: 8
Views: 2581

Re: Velvet Mite

I agree with mrsonchus - the images are good and interesting. I assume your interest in the "black dots" is because you have not found a reference to a species with this sort of surface texture as a normal attribute? Certainly my quick search didn't turn up anything like this. Is this a case of "fle...
by tgss
Sun Oct 10, 2021 5:41 pm
Forum: Resources (online, books etc.)
Topic: Catalogue of postage stamps featuring microscopes, microscopy, microscopists
Replies: 4
Views: 2205

Re: Catalogue of postage stamps featuring microscopes, microscopy, microscopists

Thanks for this microcosmos. I don't currently collect stamps, but have seen David Walker's articles in Micscape, and am interested to see the use of microscope related images on postage stamps across the world, and in the graphic design styles used. And yes, it's particularly nice to see microscope...
by tgss
Sun Sep 26, 2021 9:12 pm
Forum: Digital processing
Topic: How do you perform stitching?
Replies: 17
Views: 18111

Re: How do you perform stitching?

The Wayback machine has it. Upper link for 64 bit. Lower for 32 bit. https://web.archive.org/web/20180724063025/https://download.microsoft.com/download/7/3/9/73918E0B-C146-40FA-B18C-EADF03FEC4BA/ICE-2.0.3-for-64-bit-Windows.msi https://web.archive.org/web/20180708164847/https://download.microsoft.co...
by tgss
Sat Sep 25, 2021 6:16 pm
Forum: Pictures and Videos
Topic: Visualizing the waste liquid expelled from a contractile vacuole
Replies: 10
Views: 3048

Re: Visualizing the waste liquid expelled from a contractile vacuole

Wonderful work Wes. Absolutely first class!
Tom W.
by tgss
Thu Sep 23, 2021 11:12 pm
Forum: Microscopes and optics
Topic: Vickers Microplan 4 objective puzzle - how to solve it?
Replies: 27
Views: 6501

Re: Vickers Microplan 4 objective puzzle - how to solve it?

I think you are correct apochronaut, the engraving does look decidedly Vickerish, and the objectives look familiar. I think I have seen them listed specifically as Vickers infinity objectives, or perhaps mounted on a Vickers 'scope. I seem to remember being told that Vickers did start sourcing objec...
by tgss
Thu Sep 23, 2021 12:01 am
Forum: Microscopes and optics
Topic: Vickers Microplan 4 objective puzzle - how to solve it?
Replies: 27
Views: 6501

Re: Vickers Microplan 4 objective puzzle - how to solve it?

Yes. https://www.ebay.com/itm/Vickers-PH2-PLAN-40-0-65-microscope-objective-lens/193505591222?hash=item2d0dd4ffb6:g:mxAAAOSwB4Je3jNM&pageci=fec46f48-6572-4153-9359-4cffec25bec2&redirect=mobile And then there are these, with a more "modern" aesthetic? Vickers DIN.jpg I seem to remember being told th...
by tgss
Wed Sep 22, 2021 2:49 pm
Forum: Microscopes and optics
Topic: Vickers Microplan 4 objective puzzle - how to solve it?
Replies: 27
Views: 6501

Re: Vickers Microplan 4 objective puzzle - how to solve it?

I read that history and remain puzzled regarding the lengths, since I have a set of Vickers/Cooke-Baker objectives, all Microplans and despite the name difference, one could easily view them as a matched set. The Cooke-Baker 10X .25 is not spring loaded and measures 42mm from thread base to tip. Th...
by tgss
Tue Sep 21, 2021 6:54 pm
Forum: Microscopes and optics
Topic: Vickers Microplan 4 objective puzzle - how to solve it?
Replies: 27
Views: 6501

Re: Vickers Microplan 4 objective puzzle - how to solve it?

Hi apochronaut I have always found the history of Vickers microscope development to be pretty darn confusing, largely because of the miscellany of instruments inherited from their predecessors. In my post above I have largely relied on "The History of Vickers Instruments' Microscopes", published in ...
by tgss
Mon Sep 20, 2021 11:06 pm
Forum: Microscopes and optics
Topic: Vickers Microplan 4 objective puzzle - how to solve it?
Replies: 27
Views: 6501

Re: Vickers Microplan 4 objective puzzle - how to solve it?

Hi MicroBob Vickers and their subsidiaries have used a variety of parfocality lengths: 24mm, 34mm, 44mm and, after their change to DIN specification 45mm. My guess is that your 4x Microplan is 44mm; pretty close to DIN spec. Tube length is 160mm. Location of the intermediate image was 10mm down the ...
by tgss
Sat Sep 11, 2021 8:58 pm
Forum: Introduce yourself
Topic: Hello from Scotland
Replies: 8
Views: 2654

Re: Hello from Scotland

Welcome to the forum Dave from an ex-pat Scotsman. As you've probably discovered there's an enormous amount of knowledge and handy hints already on this forum that judicious use of the search facility can unearth. If you can't find what you're looking for, just keep asking questions. There's almost ...
by tgss
Thu Sep 09, 2021 10:44 pm
Forum: Microscopes and optics
Topic: PUMA open source FreeCAD microscope
Replies: 7
Views: 2370

Re: PUMA open source FreeCAD microscope

I haven't read through all the material yet, but the project looks very interesting and a lot of fun. Thanks for bringing this to everyone's attention.
Tom W.
by tgss
Thu Jul 08, 2021 5:52 pm
Forum: My microscope
Topic: WELCOME TO MY LABRATORY
Replies: 15
Views: 21356

Re: WELCOME TO MY LABRATORY

Greg
I notice you have an Albatross or something similar suspended from the ceiling in the corner. Is that a relic from bygone days or is it a current flyer?
Tom W
by tgss
Thu Jul 08, 2021 12:53 pm
Forum: My microscope
Topic: WELCOME TO MY LABRATORY
Replies: 15
Views: 21356

Re: WELCOME TO MY LABRATORY

Very nice setup Greg. Do you have a bed tucked away in there somewhere?
Tom W.
by tgss
Sun Jul 04, 2021 1:36 am
Forum: Specimens, samples and slides
Topic: Four videos of Proper Techniques for Permanent Slide Making of Whole Mount Insects
Replies: 13
Views: 8612

Re: Four videos of Proper Techniques for Permanent Slide Making of Whole Mount Insects

Thank you for making these videos available AntoniScott. You can read descriptions of how to do this, or have someone tell you, or see some photographs, but there's nothing like watching someone doing it in real time. Very much appreciated.
Tom W.
by tgss
Sat Jul 03, 2021 11:26 am
Forum: Microscopes and optics
Topic: LEGO
Replies: 4
Views: 1665

Re: LEGO

Thanks for the link MichaelG. Interesting article, and an interesting journal that I wasn't aware of. Well worth keeping an eye on.
Tom W.
by tgss
Wed Jun 23, 2021 11:06 pm
Forum: Specimens, samples and slides
Topic: Huge list of stains available to me, any suggestions?
Replies: 10
Views: 4794

Re: Huge list of stains available to me, any suggestions?

Well, others will almost certainly expand greatly on this list, but Toluidine blue O, for many uses; Safranin O and fast green FCF for plant sections; Alcian blue likewise; haematoxylin and eosin (I assume bluish?) for animal tissue.

What a treasure trove that list is!
Tom W.
by tgss
Mon Jun 21, 2021 11:47 am
Forum: Introduce yourself
Topic: Hi EVeryone from SW Ontario.
Replies: 4
Views: 3641

Re: Hi EVeryone from SW Ontario.

Hi notthatkindofDr
From one SW Ontarian to another, welcome to the forum. Whatever questions you may have, there are lots of knowledgeable folk here that can probably answer them, or at least point you in the right direction. And yes... I hope you do have fun!
Tom W.
by tgss
Fri Jun 11, 2021 1:10 am
Forum: Beginner's corner
Topic: which is the real DIN 160mm objective?
Replies: 11
Views: 4224

Re: which is the real DIN 160mm objective?

Hi petew The DIN standard for objectives specifies not only the mechanical tube length (160mm), but also the parfocal distance of the objective, i.e. the intended distance from the objective mounting flange to the object, which for a DIN standard objective is 45mm. So your longer objectives appear t...
by tgss
Tue Jun 08, 2021 11:27 pm
Forum: Pictures and Videos
Topic: Alyssum Stem (Higher Magnification)
Replies: 3
Views: 1463

Re: Alyssum Stem (Higher Magnification)

Excellent image, very well done and... no, I'm afraid I don't :(
Tom W.