Search found 80 matches

by tgss
Sun Oct 20, 2019 10:31 pm
Forum: Pictures and Videos
Topic: Marine Alga
Replies: 7
Views: 133

Re: Marine Alga

What mrsonchus said :!: .

Tom W.
by tgss
Sat Oct 19, 2019 10:42 pm
Forum: Microscopes and optics
Topic: Determining the molecular organisation of biological materials using polarized light microscopy
Replies: 6
Views: 113

Re: Determining the molecular organisation of biological materials using polarized light microscopy

I used a 10x objective, 10x eyepiece and 1.6x optovar magnification, both images were cropped from stacked photos. Later I can take some images of a stage micrometer and calculate the number of pixels per graduation to generate a scale bar. Thank you, Wes, for the clarification. No need to generate...
by tgss
Fri Oct 18, 2019 11:31 pm
Forum: Microscopes and optics
Topic: Determining the molecular organisation of biological materials using polarized light microscopy
Replies: 6
Views: 113

Re: Determining the molecular organisation of biological materials using polarized light microscopy

Fascinating stuff Wes, excellent images and a very clear exposition of the physics of the process. Can you give an idea of the scale of the images, or at least the objective powers used?
Thanks for sharing.
Tom W.
by tgss
Wed Oct 02, 2019 8:31 pm
Forum: Beginner's corner
Topic: Mounting media
Replies: 5
Views: 203

Re: Mounting media

Hi Aslan You might take a look Electron Microscopy Sciences. In particular https://www.emsdiasum.com/microscopy/products/histology/mounting_media.aspx#17997 . They are based in the states, but I have ordered from them in the past and received very good service. Many of their products, though apparen...
by tgss
Wed Oct 02, 2019 8:13 pm
Forum: Off Topic
Topic: The Explorer's Guide to Biology
Replies: 2
Views: 356

Re: The Explorer's Guide to Biology

Looks like this might be very interesting. Thank you for the link.
Tom W.
by tgss
Sun Sep 29, 2019 2:51 pm
Forum: Pictures and Videos
Topic: Colurella sp
Replies: 14
Views: 425

Re: Colurella sp

I think there's a lesson here for all of us 75. It seems that with only one microscope, and only one objective, and one or two sampling locations, it's possible to keep turning out remarkable images! I appreciate it's not quite as simple as that of course, but it does cause one to pause and think a ...
by tgss
Sun Sep 08, 2019 3:13 pm
Forum: Home-made microscope adaptations
Topic: EOS 4000D modification
Replies: 5
Views: 339

Re: EOS 4000D modification

Thanks for that Dave. I was about to make a dummy battery and install it using a similar slot for the cable, something I've previously done on a camcorder for my son. I didn't realize that dummy batteries were commercially available but will certainly make use of one now. Tom W. This is the one I b...
by tgss
Sun Sep 08, 2019 11:54 am
Forum: Home-made microscope adaptations
Topic: EOS 4000D modification
Replies: 5
Views: 339

Re: EOS 4000D modification

Thanks for that Dave. I was about to make a dummy battery and install it using a similar slot for the cable, something I've previously done on a camcorder for my son. I didn't realize that dummy batteries were commercially available but will certainly make use of one now.
Tom W.
by tgss
Fri Sep 06, 2019 10:19 pm
Forum: Pictures and Videos
Topic: Jellyfish gravity sensing organs
Replies: 7
Views: 543

Re: Jellyfish gravity sensing organs

Very informative Wes, and excellent images. Thank you.
Tom W.
by tgss
Thu Sep 05, 2019 11:23 am
Forum: Pictures and Videos
Topic: Rotifer and some algae
Replies: 12
Views: 836

Re: Rotifer and some algae

Thank you! Well, the body was still, but the head moved. Therefore the head is barely visible except for the eye and the jaws. These I managed to get sharp in a couple of frames: The rest of the head not. If I plan for shooting rotifers, I use glutaraldehyde before I put on the cover glass. With ri...
by tgss
Thu Sep 05, 2019 1:08 am
Forum: Pictures and Videos
Topic: Marine worm (possibly Platynereis sp)
Replies: 5
Views: 339

Re: Marine worm (possibly Platynereis sp)

I agree with mintakax, interesting looking worm. So many interesting creatures in the sea. I grew up by the sea, but now live by the great lakes. They too are impressive, but I still miss the sea.
Tom W.
by tgss
Thu Sep 05, 2019 1:03 am
Forum: Pictures and Videos
Topic: Rotifer and some algae
Replies: 12
Views: 836

Re: Rotifer and some algae

Wonderful images hkv. Thanks for sharing.
I'm intrigued by the rotifer image in that, despite stacking and stitching, there is very little evidence of movement. Is there a secret you're willing to share??
Tom W.
by tgss
Wed Aug 28, 2019 11:29 am
Forum: Resources (online, books etc.)
Topic: Protocols in Protozoology
Replies: 3
Views: 698

Re: Protocols in Protozoology

Very interesting link Wes. Bedtime reading for months! Thank you.
Tom W.
by tgss
Mon Aug 26, 2019 10:53 pm
Forum: Pictures and Videos
Topic: Short Hand-Sectioning Demo with video
Replies: 2
Views: 750

Re: Short Hand-Sectioning Demo with video

Excellent John. Thank you.
Tom W.
by tgss
Mon Aug 26, 2019 1:35 am
Forum: Pictures and Videos
Topic: Pollen. There's lots of it about.
Replies: 99
Views: 17664

Re: Pollen. There's lots of it about.

I heartily agree with Bob. The collage is very attractive and informative. In fact if all three images in the collage above were of the same plant it would be perfect, and could even be extended, within limits, to include other details. As for the unknown, I've no idea, except that it definitely loo...
by tgss
Sun Aug 25, 2019 5:56 pm
Forum: Pictures and Videos
Topic: Pollen. There's lots of it about.
Replies: 99
Views: 17664

Re: Pollen. There's lots of it about.

Sorry Alan. Pictures failed to show up again (for me at least).
Tom W.
by tgss
Sat Aug 24, 2019 6:32 pm
Forum: Home-made microscope adaptations
Topic: Home made (Very Basic) Microtome
Replies: 42
Views: 2941

Re: Home made (Very Basic) Microtome

Good job all round Alan! Pretty soon John B is going to have to look to his laurels ;)
Tom W.
by tgss
Tue Aug 20, 2019 2:16 pm
Forum: Home-made microscope adaptations
Topic: Home made (Very Basic) Microtome
Replies: 42
Views: 2941

Re: Home made (Very Basic) Microtome

Back when I was building and flying F1D Indoor Free Flight, I learned to dissect Gillette Mach 3 razor heads for the individual blades, which I super-glued to stick handles, to cut microfilm for wings and tail surfaces. Tiny little things are a bit of trick to handle, but even sharper yet. Nice to ...
by tgss
Sat Aug 17, 2019 5:57 pm
Forum: Home-made microscope adaptations
Topic: Filter Holder Modification. (Darkfield Oblique)
Replies: 1
Views: 347

Re: Filter Holder Modification. (Darkfield Oblique)

Good job Alan... actually very good job considering the vast array of tooling you had at your disposal :lol: And as you have shown, you never know what little bonus (oblique) fate will bring your way if you only try!
Tom W.
by tgss
Sat Aug 17, 2019 5:39 pm
Forum: Off Topic
Topic: There Are Thousands of Tardigrades on the Moon. Now What?..
Replies: 3
Views: 906

Re: There Are Thousands of Tardigrades on the Moon. Now What?..

I did wonder about that myself Bill. We are assured that they cannot reproduce on the moon, which seems reasonable, but we also know they can survive (remain viable) in the vacuum of space for a very long time. However I suspect even tardigrades have a best before date which we can only hope will be...
by tgss
Wed Aug 14, 2019 10:43 pm
Forum: Microscopes and optics
Topic: Olympus PE 2.5x Photoeyepiece Arrived
Replies: 3
Views: 302

Re: Olympus PE 2.5x Photoeyepiece Arrived

Thank you John B. First class images.
Tom W.
by tgss
Wed Aug 14, 2019 4:39 pm
Forum: Pictures and Videos
Topic: Licmophora (one more)
Replies: 15
Views: 607

Re: Licmophora (one more)

Another beautiful image - thanks again for posting!
Tom
by tgss
Mon Aug 12, 2019 2:49 pm
Forum: Introduce yourself
Topic: Hi from Lancs UK
Replies: 4
Views: 865

Re: Hi from Lancs UK

Welcome Chris - the more the merrier! Can you tell us something about your microscopes perhaps in the "My Microscopes" forum?
Tom
by tgss
Tue Aug 06, 2019 8:20 pm
Forum: Sandbox
Topic: Test link to Google Photos
Replies: 34
Views: 3588

Re: Test link to Google Photos

Hi Bob I sympathise with your concerns regarding external image hosting sites and the big problems that can be created when they disappear, permanently or temporararily. Your suggestion that some money be collected to support additional storage space is OK with me. But I don't know how the forum hos...
by tgss
Tue Aug 06, 2019 5:20 pm
Forum: Sandbox
Topic: Test link to Google Photos
Replies: 34
Views: 3588

Re: Test link to Google Photos

Glad it worked OK Alan, and the process is simple. Should be a very good option to the other, limited storage, hosting services, and an encouragement to minimize space useage on the forum. Thanks for all the effort you have put into it.
Tom W.
by tgss
Tue Aug 06, 2019 5:11 pm
Forum: Sandbox
Topic: Test link to Google Photos
Replies: 34
Views: 3588

Re: Test link to Google Photos

OK. Here is test image

Image

Tom W.
by tgss
Tue Aug 06, 2019 5:04 pm
Forum: Sandbox
Topic: Test link to Google Photos
Replies: 34
Views: 3588

Re: Test link to Google Photos

Seems to be working fine Alan. Well done! I tried to carry out a test but have not received a password from postimages - my ISP's mail server is having trouble with passwords right now. Will try again later.
Tom W
by tgss
Tue Aug 06, 2019 3:23 pm
Forum: Sandbox
Topic: Test link to Google Photos
Replies: 34
Views: 3588

Re: Test link to Google Photos

Can see three images in your first post, but cannot see image in your third post.
Tom
by tgss
Tue Aug 06, 2019 2:02 pm
Forum: Sandbox
Topic: Test link to Google Photos
Replies: 34
Views: 3588

Re: Test link to Google Photos

I am. I'm especially dim-witted! I cleared my browser cache and am no longer special - I see the first two images, but not the third.
Tom
by tgss
Tue Aug 06, 2019 1:54 pm
Forum: Sandbox
Topic: Test link to Google Photos
Replies: 34
Views: 3588

Re: Test link to Google Photos

For what it's worth, at this point in time, I can see all three images.
Tom