Search found 827 matches

by Wim van Egmond
Wed Apr 25, 2018 12:12 am
Forum: Photography Through the Microscope
Topic: Freshwater plant. ID?
Replies: 12
Views: 2858

Brilliant!

I think it is Chara.

Wim
by Wim van Egmond
Tue Feb 07, 2017 12:47 pm
Forum: Photography Through the Microscope
Topic: and another marine ciliate
Replies: 8
Views: 687

Really spectacular for a preserved ciliate. Well done René! I will try to collect samples for you and will make sure I use the lugol well. :-)

Wim
by Wim van Egmond
Sun Jan 29, 2017 1:51 am
Forum: Photography Through the Microscope
Topic: Hyalodiscus scoticus in DIC/brightfield
Replies: 9
Views: 1787

Nice series of a very tiny subject. DIC is not everything. Less resolving power and in the case of this diatom they don't give extra information. Perhaps the DIC images are a bit dark. You could perhaps make them a bit lighter.

Wim
by Wim van Egmond
Sat Jan 28, 2017 12:59 pm
Forum: Photography Through the Microscope
Topic: Ciliated eat rotifer
Replies: 11
Views: 1078

Amazing footage. I wonder if it killed the rotifer or that it is a scavenger.

Wim
by Wim van Egmond
Sat Jan 28, 2017 9:24 am
Forum: Photography Through the Microscope
Topic: Size comparison Foraminifera calcarina and radiolaria
Replies: 21
Views: 2563

Yes, Dave, that is a really nice extra. And I liked the choice of radiolarian species that is a bit like a moonlander.

Now the finishing touch would be a tiny diatom on top of that radiolarian. :)

Wim
by Wim van Egmond
Sat Jan 28, 2017 4:44 am
Forum: Photography Through the Microscope
Topic: dark penicillium
Replies: 13
Views: 1123

dark penicillium

You don't always need colour. Here is a gloomy picture of a Penicillium.

It is shot with a Zeiss 100X planachromate and it is dic set almost to its darkest setting.

Wim

Image
by Wim van Egmond
Sat Jan 28, 2017 4:39 am
Forum: Photography Through the Microscope
Topic: testing 123... (fluorescence and stepper)
Replies: 17
Views: 3982

Super results, Charlie. This will be a productive year, I am sure!
by Wim van Egmond
Sat Jan 28, 2017 4:38 am
Forum: Photography Through the Microscope
Topic: Size comparison Foraminifera calcarina and radiolaria
Replies: 21
Views: 2563

Not sure if the idea is that unique. :) Bit it is very nicely done.

Wim
by Wim van Egmond
Thu Jan 26, 2017 12:24 am
Forum: Photography Through the Microscope
Topic: (Marine) Red Algae ... and some inhabitants
Replies: 11
Views: 694

Hello Walter,

Nice to hear you know my work. I should post more often. :-) Yes, the Oosterschelde is different.

It is good that you collect in winter. We often forget to do that but you can find different organisms during this season.

regards,

Wim
by Wim van Egmond
Wed Jan 25, 2017 1:58 am
Forum: Photography Through the Microscope
Topic: (Marine) Red Algae ... and some inhabitants
Replies: 11
Views: 694

Very nice results and I wonder which sea water lake that is? I get my marine samples from the Grevelingen and the Oosterschelde. We might be fishing in the same pool. :-)
by Wim van Egmond
Wed Jan 25, 2017 1:55 am
Forum: Photography Through the Microscope
Topic: Peritrichs
Replies: 12
Views: 1044

Thank you for your kind and useful comments! Bruce, you are a gem. I often work a bit in a hurry and I should have looked into the ID when I still had the sample. Not sure if any of the images I made shows a contractile vacuole. I can make the measurements from the image.

regards,

Wim
by Wim van Egmond
Tue Jan 24, 2017 4:40 am
Forum: Photography Through the Microscope
Topic: Peritrichs
Replies: 12
Views: 1044

Peritrichs

It has been ages since I posted. I did not make that many micrographs because I worked on filming and time lapsing. But I am trying to archive a bit. This is a shot of Peritrichs attached to cyanobacteria. I would like to find out if it is perhaps Pseudohaplocaulus infravacuolatus or Pseudovorticell...
by Wim van Egmond
Fri Feb 26, 2016 7:10 am
Forum: Photography Through the Microscope
Topic: Van Leeuwenhoek's first observation of a microbe, Spirogyra?
Replies: 15
Views: 3511

Thank you friends! I hope we can spread the idea. The more I dive into the subject the more clues I find. This quote is from a letter 3 months before the Berkelse Meer find when Van Leeuwenhoek found red blood cells. These are smaller than the individual cells of these cyanobacteria. "I prepared div...
by Wim van Egmond
Thu Feb 25, 2016 11:53 am
Forum: Photography Through the Microscope
Topic: Van Leeuwenhoek's first observation of a microbe, Spirogyra?
Replies: 15
Views: 3511

Thank you very much. I am not sure about the capillaries. I assumed that if he was using then that it would have been hard to get Spirogyra in it. But he would even have had noticed it when putting them in a bottle. If it was Spirogyra he would have described it differently. Cyanobaceria easily ente...
by Wim van Egmond
Wed Feb 24, 2016 10:04 am
Forum: Photography Through the Microscope
Topic: Van Leeuwenhoek's first observation of a microbe, Spirogyra?
Replies: 15
Views: 3511

Van Leeuwenhoek's first observation of a microbe, Spirogyra?

The past month I've worked hard on an article for Micscape magazine that may be of interest for some of you. I hope it is o.k. that I 'advertise' for it here :-) But I am curious if it is convincing so please take some time if you wish to read it. And please let me know what you think. It is a rathe...