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Desmids and amoeba tests

 
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Charles Krebs



Joined: 01 Aug 2006
Posts: 5805
Location: Issaquah, WA USA
PostPosted: Sun May 18, 2014 7:27 pm    Post subject: Desmids and amoeba tests Reply with quote
Sort of an odd mix of subjects. My recent samples haven't turned up any unusual interesting subjects, but one contained quite a few desmids and amoeba tests. So I gathered up a grouping of each (nowhere near as ambitious as Beatsy's diatom circle... that still amazes me!)

The desmids are oblique brightfield with crossed polarizers. Olympus BHS with a 4X and 20X objective.

The amoeba tests were taken "uncovered" (to avoid crushing any of them) with my Nikon MM-11 setup. I've been playing around with some simple lighting methods to give me brightfield, darkfield, Rheinberg (with a little added "top light" if needed).














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pwnell



Joined: 18 Dec 2009
Posts: 1987
Location: Tsawwassen, Canada
PostPosted: Sun May 18, 2014 8:25 pm    Post subject: Reply with quote
These are incredible.
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vasselle



Joined: 05 Jan 2014
Posts: 1497
Location: France
PostPosted: Sun May 18, 2014 8:36 pm    Post subject: Reply with quote
Superbe clichés
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Jacek



Joined: 02 Oct 2011
Posts: 5181
Location: Poland
PostPosted: Sun May 18, 2014 10:48 pm    Post subject: Reply with quote
Picture perfect as always
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Beatsy



Joined: 05 Jul 2013
Posts: 1478
Location: Malvern, UK
PostPosted: Mon May 19, 2014 2:09 am    Post subject: Reply with quote
These are wonderful. I've seen a lot of testate amoeba recently and mentioned them to my neighbour (a builder) who likes to come and have a look through the microscope now and again. I joked that people often say builders are slime, how would he like to see some slime that can build Smile After looking, he suggested I arrange some like the diatoms, but I dismissed the idea. Too big, and not all that interesting - I thought. You certainly disproved that notion! Lovely images and very interesting too. It really is amazing that these complex structures are built by single-celled, brainless bits of protoplasm.

Might be an idea to embed some in resin and grind them down like a mineral section. Be interesting to see the inside and get clear cross sections of the walls. Hmmm...
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Tom Jones



Joined: 31 Jan 2009
Posts: 280
Location: Crestline, CA
PostPosted: Mon May 19, 2014 6:42 am    Post subject: Reply with quote
Very, very nice!!
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arturoag75



Joined: 05 Feb 2010
Posts: 1593
Location: italy
PostPosted: Mon May 19, 2014 1:36 pm    Post subject: Reply with quote
Fantastic Wink
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billporter1456



Joined: 06 Nov 2013
Posts: 502
Location: United States
PostPosted: Mon May 19, 2014 7:58 pm    Post subject: Reply with quote
Beautiful images, Charles. Your work always inspires me.
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_Michal_



Joined: 06 Apr 2014
Posts: 485
Location: Poland
PostPosted: Tue May 20, 2014 6:42 am    Post subject: Reply with quote
All pictures are magnificient
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Olympusman



Joined: 15 Jan 2012
Posts: 3958
PostPosted: Tue May 20, 2014 6:43 am    Post subject: Desmids and tests Reply with quote
Very nice stuff, Charles.
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JH



Joined: 09 Mar 2013
Posts: 1188
Location: Vallentuna, Stockholm, Sweden
PostPosted: Tue May 20, 2014 9:32 am    Post subject: Reply with quote
Truly inspiring
Regards Jörgen
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carlos.uruguay



Joined: 23 Feb 2012
Posts: 5101
Location: Uruguay - Montevideo - America del Sur
PostPosted: Tue May 20, 2014 12:58 pm    Post subject: Reply with quote
Magnificent photos!
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Anatoly



Joined: 10 Jan 2014
Posts: 165
Location: Omsk, Russia
PostPosted: Tue May 20, 2014 7:34 pm    Post subject: Reply with quote
Very beautiful photos!
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abpho



Joined: 17 Aug 2011
Posts: 1426
Location: Earth
PostPosted: Mon Jun 02, 2014 6:58 am    Post subject: Reply with quote
Congratulations for winning the June picture of the month with that second image.
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