File:18. Лајденфростов ефект.webm
Size of this JPG preview of this WEBM file: 800 × 450 pixels. Other resolutions: 320 × 180 pixels | 640 × 360 pixels | 1,024 × 576 pixels | 1,280 × 720 pixels | 1,920 × 1,080 pixels.
Original file (WebM audio/video file, VP9/Vorbis, length 1 min 12 s, 1,920 × 1,080 pixels, 8.82 Mbps overall, file size: 75.17 MB)
Summary
| Description |
Македонски: Демонстрација на Лајденфростов ефект. Во моментот кога многу загреано топче се става во топла (≈ 60 °С) вода, доаѓа до образување на обвивка од водна пара околу топчето. Парата е изолатор и не дозволува да дојде до контакт меѓу многу загреаното топче со значително поладната вода. Најнапред доаѓа до ладење на металната прачка која го држи топчето (помал волумен), со што доаѓа до вриење на водата во непосредна околина на прачката. По извесно време, како што се лади топчето, се губи обвивката од водна пара и доаѓа до директен контакт на загреаното топче и водата. Водата почнува интензивно да врие и капки вода прскаат од чашата. На крајот доаѓа до термичка рамнотежа меѓу водата и металот.
Осмислено и изведено од Марина Стојановска, Миха Буклески и Владимир Петрушевски, Институт за хемија, ПМФ, УКИМ, Скопје. English: Demonstration of the Leidenfrost effect. At the instant a heated metal ball is placed in warm (≈ 60°C) water, a layer of water vapour forms around the ball. The vapor acts as an isolator and does not allow direct contact between the heated metal ball and the significantly cooler water. At the beginning, the metal rod cools faster (its volume is smaller), making the nearby water to boil first. After a while, as the ball cools down, the layer of water vapour disappears and the water comes into contact with the heated ball. The water starts boiling intensively and drops are splashed out of the beaker. At the end, the water and the ball reach thermal equilibrium. Planned and performed by Marina Stojanovska, Miha Bukleski and Vladimir Petruševski, Department of Chemistry, FNSM, Ss. Cyril and Methodius University, Skopje, Macedonia. |
| Date | |
| Source | Own work |
| Author | Petrovskyz |
Licensing
I, the copyright holder of this work, hereby publish it under the following license:
This file is licensed under the Creative Commons Attribution-Share Alike 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:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 00:47, 18 October 2016 | 1 min 12 s, 1,920 × 1,080 (75.17 MB) | Petrovskyz | User created page with UploadWizard |
File usage
The following page uses this file:
Global file usage
The following other wikis use this file:
- Usage on ar.wikipedia.org
- Usage on cs.wikipedia.org
- Usage on de.wikipedia.org
- Usage on el.wikipedia.org
- Usage on en.wikipedia.org
- Usage on eo.wikipedia.org
- Usage on hr.wikipedia.org
- Usage on hu.wikipedia.org
- Usage on id.wikipedia.org
- Usage on pl.wikipedia.org
- Usage on ru.wikipedia.org
- Usage on sl.wikipedia.org
- Usage on sq.wikipedia.org
- Usage on sr.wikipedia.org
- Usage on tr.wikipedia.org
- Usage on uk.wikipedia.org
- Usage on vi.wikipedia.org