File:Gallium beating heart.webm

Original file(WebM audio/video file, VP8/Vorbis, length 33 s, 1,920 × 1,080 pixels, 957 kbps overall, file size: 3.78 MB)

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English: The gallium beating heart is a chemistry demonstration in which a drop of gallium is made to pulsate, like a beating heart. The gallium beating heart is similar to the mercury beating heart, but gallium is much less toxic, so this demonstration may be preferable. To make this experiment I have melted piece of gallium in 20% hot sulfuric acid. Next, i am adding to the solution droplets of 5% potassium dichromate solution. A sound effect of a beating heart has been added to this video.
Polski: Bijące serce z galu to reakcja chemiczna, podczas której kropla galu pulsuje jak bijące serce. Aby przeprowadzić eksperyment, należy roztopić kawałek galu w gorącym 20% kwasie siarkowym, a następnie dodać do niego kilka kropel 5% roztworu dichromianu potasu.
Čeština: Tlukouci galliové srdce je chemická reakce, při které kapka kapalného gallia pulzuje jako bijící srdce. K provedení tohoto experimentu je třeba ponořit kousek roztaveného gallia do horké 20 % kyseliny sírové a přidat několik kapek 5 % roztoku dichromanu draselného.
Македонски: „Галиумско срце што чука“ — хемиска реакција каде парче галиум отчукува како срце. Парче галиум се топи во врела 20% сулфурна киселина со додавање на неколку капки од 5% раствор на калиум дихромат.
中文(简体):“镓心反应”是镓像心脏那样有规律跳动的演示实验,它和汞心反应类似,但是镓的毒性较小,更适合作为演示实验。镓在20%热的硫酸中熔化(并放出氢气),溶液中加有5%重铬酸钾溶液染色。心跳声另加入视频中。
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Author Maxim Bilovitskiy

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Media of the day This file was selected as the media of the day for 03 August 2016. It was captioned as follows:
English: The gallium beating heart is a chemistry reaction in which a drop of gallium is made to pulsate, like a beating heart. To make this experiment, melt a piece of gallium in hot 20% sulfuric acid and add to the solution several drops of 5% potassium dichromate solution.
Other languages
Čeština: Tlukouci galliové srdce je chemická reakce, při které kapka kapalného gallia pulzuje jako bijící srdce. K provedení tohoto experimentu je třeba ponořit kousek roztaveného gallia do horké 20 % kyseliny sírové a přidat několik kapek 5 % roztoku dichromanu draselného.
English: The gallium beating heart is a chemistry reaction in which a drop of gallium is made to pulsate, like a beating heart. To make this experiment, melt a piece of gallium in hot 20% sulfuric acid and add to the solution several drops of 5% potassium dichromate solution.
Македонски: „Галиумско срце што чука“ — хемиска реакција каде парче галиум отчукува како срце. Парче галиум се топи во врела 20% сулфурна киселина со додавање на неколку капки од 5% раствор на калиум дихромат.
Polski: Bijące serce z galu to reakcja chemiczna, podczas której kropla galu pulsuje jak bijące serce. Aby przeprowadzić eksperyment, należy roztopić kawałek galu w gorącym 20% kwasie siarkowym, a następnie dodać do niego kilka kropel 5% roztworu dichromianu potasu.

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File history

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Date/TimeThumbnailDimensionsUserComment
current19:44, 30 November 201533 s, 1,920 × 1,080 (3.78 MB)Bilovitskiy (talk | contribs)User created page with UploadWizard

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Format Bitrate Download Status Encode time
VP9 1080P 816 kbps Completed 13:52, 10 January 2023 1 min 28 s
Streaming 1080p (VP9) 654 kbps Completed 08:52, 7 February 2024 1.0 s
VP9 720P 462 kbps Completed 13:51, 10 January 2023 53 s
Streaming 720p (VP9) 300 kbps Completed 15:25, 27 March 2024 1.0 s
VP9 480P 309 kbps Completed 13:56, 10 January 2023 35 s
Streaming 480p (VP9) 148 kbps Completed 08:50, 12 March 2024 1.0 s
VP9 360P 240 kbps Completed 13:55, 10 January 2023 26 s
Streaming 360p (VP9) Not ready Unknown status
VP9 240P 206 kbps Completed 13:55, 10 January 2023 13 s
Streaming 240p (VP9) 45 kbps Completed 00:02, 22 December 2023 1.0 s
WebM 360P 382 kbps Completed 13:55, 10 January 2023 20 s
Streaming 144p (MJPEG) 555 kbps Completed 18:02, 13 November 2023 3.0 s
Stereo (Opus) 161 kbps Completed 08:35, 23 November 2023 1.0 s
Stereo (MP3) 128 kbps Completed 06:56, 3 November 2023 2.0 s

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