Oxalate de calcium

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vasselle
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Joined: Sat Oct 25, 2014 5:32 pm
Location: France

Oxalate de calcium

#1 Post by vasselle » Wed Mar 07, 2018 9:04 pm

Hello everyone.
An observation Calcium oxalate.
Taken from an onion.

Photo 1.
Plan 4 X pol + fond clair.
Stack de 17 vues.
1.jpg
1.jpg (460.31 KiB) Viewed 862 times
Photo 2.
Plan 10 X pol + éclairage oblique.
Stack de 15 vues.
2.jpg
2.jpg (412.28 KiB) Viewed 862 times
Photo 3.
Plan 10 X pol + éclairage oblique.
Stack de 20 vues.
3.jpg
3.jpg (431.53 KiB) Viewed 862 times
Photo 4.
Plan 10 X pol + éclairage oblique.
Stack de 25 vues.
4.jpg
4.jpg (449.49 KiB) Viewed 862 times
Photo 5.
Plan 10 X pol + fond sombre.
Stack de 15 vues.
5.jpg
5.jpg (318.72 KiB) Viewed 862 times
Cordialement seb
Microscope Leitz Laborlux k
Boitier EOS 1200D + EOS 1100D

JimT
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Re: Oxalate de calcium

#2 Post by JimT » Wed Mar 07, 2018 9:07 pm

Very good as usual. Like the second one very much.

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75RR
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Re: Oxalate de calcium

#3 Post by 75RR » Wed Mar 07, 2018 9:21 pm

Really like these colourful and vibrant images. The darkfield's 'golden ingots' are also very nice.
Zeiss Standard WL (somewhat fashion challenged) & Wild M8
Olympus E-P2 (Micro Four Thirds Camera)

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Pat Thielen
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Re: Oxalate de calcium

#4 Post by Pat Thielen » Wed Mar 07, 2018 9:39 pm

Wow -- Very beautiful images!
Pat Thielen
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Hobbyst46
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Re: Oxalate de calcium

#5 Post by Hobbyst46 » Wed Mar 07, 2018 10:57 pm

Magnificent. Just bookmarked it!
Are these the commonplace lower epidermis cells of the onion bulb? unstained? and the crystals are only visible under POL?
Zeiss Standard GFL+Canon EOS-M10, Olympus VMZ stereo

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vasselle
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Re: Oxalate de calcium

#6 Post by vasselle » Tue Mar 13, 2018 3:36 am

Bonjour à tous
Merci beaucoup
La pelure provient de la couche extérieure de oignon
Attachments
pelure oignon.jpg
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Microscope Leitz Laborlux k
Boitier EOS 1200D + EOS 1100D

Francisco
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Re: Oxalate de calcium

#7 Post by Francisco » Tue Mar 13, 2018 4:51 pm

Magnificent.

Hobbyst46
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Re: Oxalate de calcium

#8 Post by Hobbyst46 » Tue Mar 13, 2018 10:19 pm

I think that I identify such crystals in the external skin of a garlic clove in bright field, but it is all without the magnificent colors of course. Need to stain it, in the absence of polarization accessories.
Zeiss Standard GFL+Canon EOS-M10, Olympus VMZ stereo

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Jonnyvine
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Re: Oxalate de calcium

#9 Post by Jonnyvine » Wed Mar 14, 2018 4:08 pm

Nice colours :)

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