File:Frozen drop.webm
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Frozen_drop.webm (file size: 31.78 MB, MIME type: video/webm)
Summary
| Description |
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.
Македонски: Создавање на кристали од мраз во капка вода при многу ниска температура.
Polski: Tworzenie się kryształków lodu na kropli wody wystawionej na działanie bardzo niskiej temperatury. |
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| Source | Own work |
| Author | Maxim Bilovitskiy |
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This image was uploaded as part of Wiki Science Competition 2017. |
Assessment
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This file was selected as the media of the day for 17 June 2019. It was captioned as follows:
English: Ice crystals form in a drop of water exposed to a very cold environment.
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This is a featured media on Wikimedia Commons and is considered one of the finest files.
If you have a file of similar quality that can be published under a suitable copyright license, be sure to upload it, tag it, and nominate it.
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Licensing
I, the copyright holder of this work, hereby publish it under the following license:
This file is licensed under the Creative Commons Attribution 4.0 International license.
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
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File history
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| Date/Time | Dimensions | User | Comment | |
|---|---|---|---|---|
| current | 17:27, 15 November 2018 | (31.78 MB) | wikimediacommons>Bilovitskiy | Reupload without music. |
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