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File:Frozen drop.webm

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Original file(WebM audio/video file, VP8/Vorbis, length 31 s, 1,920 × 1,080 pixels, 8.52 Mbps overall)

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English: Frozen drop of water in a very cold environment, approximately -180 degrees Celsius. You can observe the beautful ice crystals formation. First, I put a copper plate in a foam box, and cooled it with liquid nitrogen at its boiling point. After that, I began to drip water droplets on the surface of the cold copper plate, from which they began to freeze very quickly. At a certain height the temperature increased, causing the water vapor floating above the nitrogen layer to condense on the surface of the frozen water, turning into beautiful ice crystals. This process can be associated with the formation of clouds or precipitation, when water crystals are formed at the boundary of temperature media. The drops themselves freeze very quickly on the copper surface at a very low temperature, and also have a slightly different structure.
Eesti: 2016. aasta lõpus viisin läbi eksperimente vedela lämmastikuga ja mõtlesin, et kuidas vesi käitub külma vaskplaadi pinnal, mis oli jahutatud vahtkarbis vedela lämmastikuga -180 °C juurde. Hakkasin külma vaskplaadi pinnale tilgutama veetilkasid, kus nad väga kiiresti külmusid. Kui aga alguses vesi lihtsalt külmus, siis jõudes teatud kõrgusele hakkas jäätunud veetilkadele kondenseeruma veeaur ning moodustas ilusad jääkristallid. Lämmastikukihist kõrgemale tõustes tõusis ka temperatuur ja piisaval kõrgusel olid tekkinud tingimused õhus leiduva veeauru kondenseerumiseks. Seda protsessi võib seostada pilvede või sademete tekkimisega, kui temperatuurikeskkonna piirides moodustuvad vee kristallid. Video tehti külgvalgustusega 90 mm makro objektiiviga.
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Source Own work
Author Maxim Bilovitskiy

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Wiki Science Competition 2017
This image was uploaded as part of Wiki Science Competition 2017.

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Date/TimeThumbnailDimensionsUserComment
current17:27, 15 November 201831 s, 1,920 × 1,080 (31.78 MB)Bilovitskiy (talk | contribs)Reupload without music.
00:34, 25 November 201731 s, 1,920 × 1,080 (23.1 MB)Bilovitskiy (talk | contribs)User created page with UploadWizard
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VP9 1080P1.65 Mbps
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Completed 17:28, 15 November 20181 min 29 s
VP9 720P802 kbps
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WebM 1080P3.42 Mbps
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WebM 720P1.71 Mbps
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