Search found 551 matches

by hkv
Mon Apr 15, 2024 8:03 am
Forum: Photography Through the Microscope
Topic: Micro double terminated quartz crystal
Replies: 5
Views: 227

Re: Micro double terminated quartz crystal

Nice to see the difference in various contrast techniques!
by hkv
Sat Apr 06, 2024 9:52 am
Forum: Photography Through the Microscope
Topic: SEM of polymer microspheres deposited on skin
Replies: 6
Views: 265

Re: SEM of polymer microspheres deposited on skin

... Absolutely! Let's team up. I bring the mosquitos, the SEM and the knife. You bring the hand. I don't have any anaesthetic, but I am sure you we can do without. Let's hope we don't need 12 quarter sized pieces before we get the killer shot. I promise to be gentle with the knife and not cut too d...
by hkv
Sat Apr 06, 2024 4:42 am
Forum: Photography Through the Microscope
Topic: SEM of polymer microspheres deposited on skin
Replies: 6
Views: 265

Re: SEM of polymer microspheres deposited on skin

Interesting image with nano particles almost. I noticed you used tape to transfer the particles from the skin to the tape. That reminded me of another story. Not sure if you are familiar with the Swedish photographer Lennart Nilsson who made a few very published SEM images back in the 80s (National...
by hkv
Thu Apr 04, 2024 4:10 pm
Forum: Photography Through the Microscope
Topic: Diatoms - Coscinodiscus marginatus and Eupyxidicula sp.
Replies: 5
Views: 228

Re: Diatoms - Coscinodiscus marginatus and Eupyxidicula sp.

jmc wrote:
Wed Apr 03, 2024 3:22 am
Great images. The Surirella could be S. undulata.
Thank you for the ID!
by hkv
Thu Apr 04, 2024 4:02 pm
Forum: Photography Through the Microscope
Topic: SEM of polymer microspheres deposited on skin
Replies: 6
Views: 265

Re: SEM of polymer microspheres deposited on skin

Interesting image with nano particles almost. I noticed you used tape to transfer the particles from the skin to the tape. That reminded me of another story. Not sure if you are familiar with the Swedish photographer Lennart Nilsson who made a few very published SEM images back in the 80s (National ...
by hkv
Wed Apr 03, 2024 3:53 pm
Forum: Photography Through the Microscope
Topic: Diatoms - Didysmophenia geminata and Gomphonema sp.
Replies: 10
Views: 684

Re: Diatoms - Didysmophenia geminata and Gomphonema sp.

KurtM wrote:
Tue Apr 02, 2024 6:19 pm
I'm late to the party, but just had to add my compliments. Also, I echo Beats on this one: I spend a lot of time studying Didymo, and these images are spectacularly wonderful and helpful to see! Bravo!
Thank you Rogelio and Kurt!
by hkv
Mon Apr 01, 2024 2:09 pm
Forum: Photography Through the Microscope
Topic: Diatoms - Coscinodiscus marginatus and Eupyxidicula sp.
Replies: 5
Views: 228

Re: Diatoms - Coscinodiscus marginatus and Eupyxidicula sp.

Yes, you are correct. SEM can give shadows, but not for these two samples due to the angle I used. Also the color is false of course as they need to be converted from black&white to color in photoshop. You could more think of these as paintings really. It is a different workflow than light microscop...
by hkv
Mon Apr 01, 2024 1:11 pm
Forum: Photography Through the Microscope
Topic: Diatoms - Coscinodiscus marginatus and Eupyxidicula sp.
Replies: 5
Views: 228

Diatoms - Coscinodiscus marginatus and Eupyxidicula sp.

Diatoms, coloured scanning electron micrograph (SEM). Coscinodiscus marginatus (left) and Eupyxidicula sp. (right). Collected from Newport Beach (fossil) in California, USA. Magnification: x600 when printed 10 centimetres wide. https://live.staticflickr.com/65535/53625877311_66d4b20172_k.jpg Diatoms...
by hkv
Sat Mar 23, 2024 4:02 am
Forum: Photography Through the Microscope
Topic: Diatoms - Didysmophenia geminata and Gomphonema sp.
Replies: 10
Views: 684

Re: Diatoms - Didysmophenia geminata and Gomphonema sp.

Looks very similar to my first image, so seems reasonable.
Smokedaddy wrote:
Fri Mar 22, 2024 1:12 pm
Not trying to steal the thread, but is this a Didymosphenia geminata as I have it labeled?

-JW:
by hkv
Thu Mar 21, 2024 3:10 pm
Forum: Photography Through the Microscope
Topic: Diatoms - Didysmophenia geminata and Gomphonema sp.
Replies: 10
Views: 684

Re: Diatoms - Didysmophenia geminata and Gomphonema sp.

Thanks Beats, I am glad the images can be useful in interpreting light micrographs. Spectacular, as always. These images are very useful in helping "interpret" what I see optically too. The inside/outside differences in Didymosphenia (aka Rock Snot) are near impossible to separate with transmitted i...
by hkv
Wed Mar 20, 2024 2:30 pm
Forum: Photography Through the Microscope
Topic: Diatoms - Didysmophenia geminata and Gomphonema sp.
Replies: 10
Views: 684

Diatoms - Didysmophenia geminata and Gomphonema sp.

Sharing a few recent images I made of diatoms. Image 1 - Didymosphenia geminata - Showing the pore side of the frustule (outside) https://live.staticflickr.com/65535/53599526607_6a1e9e3b17_h.jpg Didymosphenia geminata by Håkan Kvarnström Photography , on Flickr Image 2 - Didymosphenia geminata - Sho...
by hkv
Mon Mar 18, 2024 5:46 pm
Forum: Photography Through the Microscope
Topic: Surirella lacrimula
Replies: 10
Views: 626

Re: Surirella lacrimula

Really great details!
by hkv
Tue Mar 05, 2024 4:41 am
Forum: Equipment Exchange
Topic: SOLD: Zeiss DIC/Phase/Fluorescence microscope
Replies: 5
Views: 747

Re: Zeiss DIC/Phase/Fluorescence microscope

wowjl wrote:
Tue Mar 05, 2024 12:34 am
If we ignore the shipping cost, this is an incredible low price transaction.

Does Sweden have no local fans?
I have not tried yet. Local market in Sweden is small, but I also assume most serious Swedish microscopists are also on this site :P
by hkv
Sun Mar 03, 2024 4:08 pm
Forum: Equipment Exchange
Topic: SOLD: Zeiss DIC/Phase/Fluorescence microscope
Replies: 5
Views: 747

SOLD: Zeiss DIC/Phase/Fluorescence microscope

Selling a Zeiss Jena Sedival inverted microscope. Very complete with DIC, Phase contrast and fluorescence. Very good condition overall. Many parts in wooden boxes. I included a few DIC micrographs of diatoms so you can see the optics in action. Full resolution images of the diatoms and equipment can...