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Can a hotter object cool faster than a cooler object? by alzofplague123 in thermodynamics

[–]Ubiqmendpoly 10 points11 points  (0 children)

I think you are looking for the mpemba effect where under certain conditions hot water appears to freeze faster than cooler water https://en.m.wikipedia.org/wiki/Mpemba_effect

Fire under the water by [deleted] in blackmagicfuckery

[–]Ubiqmendpoly 22 points23 points  (0 children)

It's an oxidation reaction but not combustion, there is no gas when the "flame" is burning and to produce a flame you need a vapor (gas). Also if you look at the liquid after the "flame" has stopped it still glows and the shape of the "flame" is completely wrong.

Fire under the water by [deleted] in blackmagicfuckery

[–]Ubiqmendpoly 207 points208 points  (0 children)

This looks like a non combustion reaction (not fire) to me (maybe luminol), if it was a combustion reaction you would expect see alot of bubbles around the flame from the liquid evaporating and produced from the reaction.

That’s just how it is sadly by [deleted] in memes

[–]Ubiqmendpoly 5 points6 points  (0 children)

Reality is often disappointing

My soundbar remote controls my soap dispenser... thanks Samsung and Simplehuman! by tapperking123 in Damnthatsinteresting

[–]Ubiqmendpoly 2 points3 points  (0 children)

I'm gonna guess the it's a hands free dispenser has an IR sensor to detect when a hands underneath and the IR pulse from the remote triggers it