Search found 438 matches

by ralfwagner
Fri Oct 05, 2018 7:14 am
Forum: Photography Through the Microscope
Topic: Lichen Placopsis gelida
Replies: 15
Views: 2241

Thank you, Jörgen.
by ralfwagner
Wed Oct 03, 2018 7:12 am
Forum: Photography Through the Microscope
Topic: Lichen Placopsis gelida
Replies: 15
Views: 2241

Thank you for your kind comments, Chris and Brian.
by ralfwagner
Tue Oct 02, 2018 3:54 am
Forum: Photography Through the Microscope
Topic: Lichen Placopsis gelida
Replies: 15
Views: 2241

Thank you, smokedaddy.
by ralfwagner
Sun Sep 30, 2018 10:17 am
Forum: Photography Through the Microscope
Topic: Around Polysiphonia
Replies: 10
Views: 1483

Super!
by ralfwagner
Sun Sep 30, 2018 10:16 am
Forum: Photography Through the Microscope
Topic: Lichen Placopsis gelida
Replies: 15
Views: 2241

Thank you, Walter.
by ralfwagner
Thu Sep 27, 2018 10:30 am
Forum: Photography Through the Microscope
Topic: Lichen Placopsis gelida
Replies: 15
Views: 2241

Hello and thanks @all!

Lou, I was using a scalpell. It is popssible cut off small pieces that are suitable for a section, aprox. 2 or 3 mm in diameter.
by ralfwagner
Wed Sep 26, 2018 7:24 am
Forum: Photography Through the Microscope
Topic: Lichen Placopsis gelida
Replies: 15
Views: 2241

Lichen Placopsis gelida

Hello, this lichen was found by my wife during her Iceland holiday. Location was near Selfoss, substrate was lava. Placopsis gelida is a crustose lichen, characterized by pale orange cephalodia in the center of the thallus. Cephalodia contain a second photobiont, in this case the cyanobacterium Stig...
by ralfwagner
Tue Sep 25, 2018 6:26 am
Forum: Photography Through the Microscope
Topic: Mayorella viridis with symbiontic green algae
Replies: 7
Views: 1025

Thank you, Seb and Frank
by ralfwagner
Mon Sep 24, 2018 8:46 am
Forum: Photography Through the Microscope
Topic: Stentor coeruleus - a portrait
Replies: 13
Views: 2329

Hallo Frank,
Super. I like especially No. 5. Perfekt darkfield.
by ralfwagner
Mon Sep 24, 2018 8:26 am
Forum: Photography Through the Microscope
Topic: Mayorella viridis with symbiontic green algae
Replies: 7
Views: 1025

Hello,

fortunately Ferry could help with a closer ID: It is Mayorella viridis.
by ralfwagner
Sun Sep 23, 2018 7:24 am
Forum: Photography Through the Microscope
Topic: Micrasterias truncata in polarized light
Replies: 3
Views: 659

Hello Houstontx, thank you for that hint. A google search with "micrasterias" and "strontium sulfat" resulted in this pdf: http://www.landesmuseum.at/pdf_frei_remote/PHY_24_2_0273-0276.pdf It is in German, but with an English abstract. Herein it is shown by X-ray analysis, that in Micrasterias denti...
by ralfwagner
Sat Sep 22, 2018 10:22 am
Forum: Photography Through the Microscope
Topic: Micrasterias truncata in polarized light
Replies: 3
Views: 659

Micrasterias truncata in polarized light

Hello,

here is video of a Micrasterias truncata in polarized light:

https://youtu.be/bibpkhdJxsU

Does anybody here know something about the nature of these little flickering yellow dots inside the plasma?
by ralfwagner
Thu Sep 13, 2018 11:59 am
Forum: Photography Through the Microscope
Topic: Mayorella viridis with symbiontic green algae
Replies: 7
Views: 1025

Thank you, Carlos and dragonblade.
by ralfwagner
Mon Sep 10, 2018 11:54 am
Forum: Photography Through the Microscope
Topic: Stentor coeruleus
Replies: 18
Views: 2406

Hello Anne,

great work. My favorite ist no.2 from the 2nd series.

A question about the aperture of your condenser: is it 0,9 or more?
by ralfwagner
Mon Sep 10, 2018 7:57 am
Forum: Photography Through the Microscope
Topic: small Mayorella gender amoeba
Replies: 4
Views: 793

well done. Must try an amoeba in pol. light, too.