Closterium

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janvangastel
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Closterium

#1 Post by janvangastel » Fri Jun 26, 2020 9:04 am

I found a closterium (I think). I made a video in dark field, to be seen below. Last part of the video showes it being crushed and spilling its content. I wonder what moves inside of the alge. I read it could be brownian motion, but some particles really travel far.


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janvangastel
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Re: Closterium

#2 Post by janvangastel » Sun Jun 28, 2020 5:53 pm

Found some references to brownian motion on the internet and some simulations. The particles can really travel 'far' if lucky, meaning 'hit by molecules moving in about the same direction'.

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75RR
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Re: Closterium

#3 Post by 75RR » Sun Jun 28, 2020 8:13 pm

Nice catch and darkfield.

Lots of desmids ... must be summer!
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MicroBob
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Re: Closterium

#4 Post by MicroBob » Mon Jun 29, 2020 7:41 am

Hi Jan,
that is a nice desmid you found there! They are also nice objects for Rheinberg illumination.

Bob

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janvangastel
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Re: Closterium

#5 Post by janvangastel » Mon Jun 29, 2020 3:22 pm

I have been thinking about that, but I don't have the Rheinberg filters yet. Is it also possible to get this type of illumination with a color filter on the field lens, below the condenser plus a dark field filter in the condenser filer tray? I have some color filters and I also have dark field filter.

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