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all 45 comments

[–]WskyDK 35 points36 points  (8 children)

Eli5 what I'm hearing and seeing?

[–]RedditorforMordor 35 points36 points  (1 child)

It's called the Leidenfrost effect

[–]SentientToiletPaper 5 points6 points  (0 children)

Thanks for linking that! I finally learned why spilled water droplets slide across my ceramic oven element instead of boiling.

[–]StopSendingMeNudePMs 28 points29 points  (1 child)

Pretty sure they use this to create sounds for poker and pinball machines.

[–]redtert 4 points5 points  (0 children)

I was thinking Star Trek phasers.

[–]IPlayGoALot 5 points6 points  (2 children)

it's the instrument they used at the beginning of that one Police song

[–]Snatch_Pastry 0 points1 point  (1 child)

I absolutely adore that song, for a lot of reasons. I just wish I knew what the chorus(?) was about.

[–]spurioushamster 0 points1 point  (0 children)

I was wondering that myself. Is Nessie going to come and sort everything out? I need to know more.

[–]I_like_maths 0 points1 point  (0 children)

its sending a distress beacon.

[–]RainJacketsStopRain 58 points59 points  (4 children)

No. Not. Again. Not this series of 4000 reposts of various red hot metals dropping into various liquids. No.

[–]Meatheaded 16 points17 points  (2 children)

I will be very disappointed if Reddit goes through another romance from start to finish with this god damn nickel ball. Now Nickelback on the other hand...

[–]Ragingwithinsanewolf 4 points5 points  (0 children)

you talking shit about nickelback bitch?

[–]xgnarf 4 points5 points  (0 children)

Now Nickelback on the other hand...

Should also be heated up to many hundreds of degrees and submerged in various liquids?

I concur.

[–]aluminumdome 2 points3 points  (0 children)

That's one of the most annoying aspects about big subs are the trends. It would be better to post those videos under the original video in the comments, but would that earn them the same karma as posting it in the sub instead? Nope.

[–]HappyDolt 9 points10 points  (3 children)

So, does the pocket around the metal sit there for a bit because the water is being heated to boiling slowly? That doesn't really make sense to me, but I can't really figure out why that pocket of what appears to be air doesn't rise through the more dense water immediately.

[–]ddpotanks 11 points12 points  (0 children)

I think it is actually steam that condenses back to water immediately. Little steam pocket. That's why it dissipates once the water reaches equilibrium.

[–]DoxBox 8 points9 points  (1 child)

It's the Leidenfrost effect. Basically, the ball is so hot that any water that touches instantly boils into steam. This steam creates that layer of "air" you see, and it insulates the water from the red hot nickel ball.

The same thing that happens when you put a few drops of liquid nitrogen into the palm of your hand. Your hand, being so warm by comparison, makes the liquid nitrogen that touches it instantly boil, creating an insulating layer that the liquid nitrogen floats on.

[–]Snatch_Pastry 4 points5 points  (0 children)

when you put a few drops of liquid nitrogen into the palm of your hand.

Also, don't do this, kids. Stick with the classics, like spraying deodorant onto your hand and lighting it.

[–]kr094 2 points3 points  (0 children)

Ah! One of the original RHNB videos. This was my favorite since, for the unexpected reaction. You'd think foam would just melt. https://www.youtube.com/watch?v=n4jl7n9fpA4

[–]frid 2 points3 points  (0 children)

That's some throwback classic RHNB. From before they had the amazing PWIP! sound for the torch shut-off.

[–]paul_swimmer 0 points1 point  (11 children)

From what I understand, doing this is not very smart. Very hot metal introduced to water can explode I think.

[–]DoxBox 0 points1 point  (9 children)

Actually it's the other way around. When you bring pure water to above boiling without it having anything to nucleate on (i.e. some impurities in the water giving the bubbles places to form), it will just not boil until disturbed. This is why you shouldn't, for example, use a microwave to boil water. Boil your water for tea, drop a teabag or spoon in, and boom - steam explosion, boiling water everywhere.

[–]TheUndrawingAcorn 2 points3 points  (8 children)

correct, if you microwave your water and you don't see it boil, don't touch it until it cools down.

[–]heyylisten 1 point2 points  (7 children)

Why on earth would anyone microwave water? Just refill the kettle

[–]IIOrannisII 6 points7 points  (3 children)

Most people in America don't own electric kettles. I've never come across one with imperial measurements.

[–]DesOconnor 4 points5 points  (2 children)

That is bananas.

[–]too_many_rules 0 points1 point  (1 child)

We already have microwaves, and electric kettles take forever at 110V.

[–]Beowoof 0 points1 point  (0 children)

They do? Mine takes like three minutes for half a liter or so.

[–]fizzlydizzly 0 points1 point  (1 child)

Ever stick a coffee in the microwave to reheat it? A relative learnt this lesson the hard way

[–]zzzac 2 points3 points  (0 children)

do it all the time whats wrong with it?

[–]kineticunt 0 points1 point  (0 children)

I don't own any pots so I always microwave mine, I just use a swinging motion with the tea bag to put it in. Usually just bubbles like crazy and spills a bit

[–]Fappening2k14 0 points1 point  (0 children)

i was expecting something more like this :D

[–]Campellarino 0 points1 point  (0 children)

Sounds like Darth Vader taking a shit.

[–]GteatClips 0 points1 point  (0 children)

what magic is this?

[–]CholentPot 0 points1 point  (0 children)

I forgot about this guy

[–]--abadox-- 0 points1 point  (0 children)

Alright, who reset Reddit?

[–]heisenbald 0 points1 point  (0 children)

nice hiss

[–]SilverbackBob 0 points1 point  (0 children)

I'd like to see a temp probe on the cup so I can see the speed of the energy exchange.

[–]fizzlydizzly 0 points1 point  (0 children)

It can get super heated so when you put a metal spoon in to stir it, it explodes all over you. I guess you just have never over heated it or something

[–]Cheebuschrist 0 points1 point  (0 children)

thats some trippy sounding shit

[–]Derpybro 0 points1 point  (0 children)

Sizzle, nice and hot

[–]Lextron 0 points1 point  (0 children)

I was waiting for the nice reaction, like: "Whoooooooa that was freakin amazing bruuuuhhhh!"

[–]PretzelHusk -2 points-1 points  (0 children)

this is old af