Closterium

Here you can post pictures and videos to show others.
Post Reply
Message
Author
User avatar
janvangastel
Posts: 183
Joined: Mon Dec 03, 2018 7:05 pm
Location: Huizen, Netherlands
Contact:

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.


User avatar
janvangastel
Posts: 183
Joined: Mon Dec 03, 2018 7:05 pm
Location: Huizen, Netherlands
Contact:

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'.

User avatar
75RR
Posts: 6973
Joined: Sun Oct 12, 2014 2:34 am
Location: Estepona, Spain

Re: Closterium

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

Nice catch and darkfield.

Lots of desmids ... must be summer!
Zeiss Standard WL (somewhat fashion challenged) & Wild M8
Olympus E-P2 (Micro Four Thirds Camera)

MicroBob
Posts: 2105
Joined: Sun Dec 25, 2016 9:11 am
Location: Northern Germany

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

User avatar
janvangastel
Posts: 183
Joined: Mon Dec 03, 2018 7:05 pm
Location: Huizen, Netherlands
Contact:

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.

Post Reply