Long story: Chinese trains have boilers for drinking water. In the good old days, the boilers were loaded with cold water, and if people did not impatiently drink all the water before it boiled, you could drink safely boiled water. But you had to make sure it was boiling, or nearly so, by dripping it out the spigot and listening for it to make a kind of puff when it hit the ground and vaporized. Audio thermometer.
If it is dripping out of the faucet, it will not vaporize upon hitting another object unless that object is already hotter. And for a sufficiently hotter object, the water could still be cold.
And frankly, if the water is that near boiling, I don't want to be drinking it
I had a friend who could tell the difference between opening a beer can and opening a pop can. If you opened a beer while he was asleep, he would wake up, if it was just pop, he stay asleep. RIP Patrick.
I noticed this when younger when I was pouring vodka that was stored in the freezer, that made it easier to make cold drinks if everything but the lime starts cold.
I can certainly hear the difference, and I know folks have said they have different viscosities, but I do wonder how much of it relates to the difference in it speed of sound at different water temps and just generally at a temp with more water outgassing as vapor. I feel like those could have a much larger impact than viscosity.
You can also see the difference between them because they have different refractive incidences. In fact just about everything is different between room temperature water and near-boiling water, so much so one group suggested they might be two different liquid phases.
Yes. But to be scientific the test would have to involve some sort of mechanism to pour the water at the exact same rate to avoid making a different sound from just pouring the water harder.
Also: what about the turbulence of water being poured from a simple pot? That will always introduce randomness into the system in terms of sound.
You could do laminar flow but then will that even make a noise? Maybe, but it would have to be poured from very high up.
While indeed a controlled experiment would be necessary for a high degree of certainty to your results, I think you can adequately resolve the question with a little time spent in your own kitchen. Attentive observation is a powerful tool in itself
To be scientific, someone *else* would have to record a bunch of different hot and cold water pours, and then present them in random order, to as many different people as possible, and have them respond H/C to each one.
You're overcomplicating things. As long as there are no systematic differences in pouring between temperatures, sufficient samples both in the number of trials per participant and the number of participants will give us reasonable data. The whole field of inferential statistics is designed to help separate signal from noise.
If you have a tea kettle and water you keep in your refrigerator (filter pitcher, bottles, etc) you can do a side by side to listen to the difference in identical mugs. There was a sound loop in an RPG that had hot water pouring for 5 seconds of its 20 second loop and thats how I learned the sound was distinct
My house hot water takes a good couple minutes to get to the shower, so I run the bathtub faucet in the morning, which is about 4â less piping than my shower. When the pitch changes, I know the showerâs going to start warming in a few seconds.
My understanding is that this is usually about the metal. What you hear is usually a valve or other bottleneck, and temperature makes metal expand or contract, and resonate differently.
As room-temperature air mixes with hot water, it expands more, making larger bubbles, which in turn have a lower frequency than the same aeration n cold water.
So it does have an effect, but just adds to the observable difference.
BlackTrashTiger
I just believed her because she's asian đ
dirtyketchup
I was waiting for the scalding hot water and screaming
Gustave13
Ice is rock, not water. Water is lava.
Ludus
ArenheimTheHybrid
robertdoobies
I've been saying this for years. This is how I know the shower water is good
DudeThatsRacist
After this, I started noticing how my shower sounds when I warm it up in the mornings. I can tell when the water goes from cold to hot.
InkyBlinkyPinkyAndClyde
Isn't this a normal thing? I've been doing it since I was a kid.
trinxter
Long story: Chinese trains have boilers for drinking water. In the good old days, the boilers were loaded with cold water, and if people did not impatiently drink all the water before it boiled, you could drink safely boiled water. But you had to make sure it was boiling, or nearly so, by dripping it out the spigot and listening for it to make a kind of puff when it hit the ground and vaporized. Audio thermometer.
TurnsOut42WasASlightMiscalculation
If it is dripping out of the faucet, it will not vaporize upon hitting another object unless that object is already hotter. And for a sufficiently hotter object, the water could still be cold.
And frankly, if the water is that near boiling, I don't want to be drinking it
andexer
Yes, but... how does this help my ballsmaxxing?
youreathing
I'm fleek-mogging, no cap frfr uhhh... skibidi.
Scezumin
this comment Aged me
seenunseen
Don't need the second part.
Feralkyn
I thought it was a lot fucking funnier tbh
bubbinsky
I closed my eyes to concentrate lol
relsky
For once, the stitch actually added something of value. That's two good chuckles from me.
Bundalicious79
I had a friend who could tell the difference between opening a beer can and opening a pop can. If you opened a beer while he was asleep, he would wake up, if it was just pop, he stay asleep. RIP Patrick.
Evi1Gav
Cold water sounds spikey, warm water sounds smooth.
UpNorthAndFreezing
Bro is all of us
BallsToYouMyGoodSir
NO fuck apple!!! my headphones only costed 0.25$ a piece and i got a 25 pack. used 7 of them so far
NorrinxRadd
Im fairly sure the second one was hot water
eXoRainbow
MissivesFromTheTower
I guess it's all hot water, when compared to absolute zero.
cyno01
Molten ice.
TheMellowPeril
Zero Kelvin folks looking at us like
rezpawner
Nah, that's way too much atomic movement for the zero K crowd.
Zeterai
Ok.
jalcantara88127001
https://media3.giphy.com/media/v1.Y2lkPWE1NzM3M2U1OXp1enR0c2licWFuOGVkanhvbjh3dGZhbzA0aHk3dWVxcTY4N2EzciZlcD12MV9naWZzX3NlYXJjaCZjdD1n/za0uMeG7DEnpyobRrU/200w.webp
AgamemnonsMemes
Its a joke, but you CAN tell the difference between hot and cold water.
SnarfyMcSnarferson
Yep. Tom Scott had a guest video from i think stand up math's
Tarmaccian
Hot and cold liquid water do actually sound differently, because they have different viscosities. Hot water has a lower resonant frequency.
Noahbalboa82
I know the sound of hot tea
Evenmoreuselessname
Yes I can hear when the water gets warm in our upstairs sink because the aerator sounds way different
JustSomePersonThere
I REALLY thought they were gonna reference the famous Not Tom Scott video on the matter:
https://youtube.com/watch?v=Ri_4dDvcZeM
Tarmaccian
Whoa! Iâve seen most of Tom Scottâs videos, but somehow missed that one.
I especially like the spectrograms being shown. Itâs subtle, but you can see the difference visually.
JustSomePersonThere
Itâs brilliant, no? Steve Mould is great too.
martineb72
I noticed this when younger when I was pouring vodka that was stored in the freezer, that made it easier to make cold drinks if everything but the lime starts cold.
Atomic2
that moment when you can hear the electric kettle is approaching boiling.
ReaperCDN
Also cold water clinks like ice cubes
IWasACatAllAlong
This is how I tell when to step into my shower. My shower also sounds like bees.
phonoodle415
Thought it was gona be one of those comments that end with "and i have no idea what im talking about"
Tarmaccian
I do miss the @cangarejos storiesâŚ
anteyeclimbaxe
I can certainly hear the difference, and I know folks have said they have different viscosities, but I do wonder how much of it relates to the difference in it speed of sound at different water temps and just generally at a temp with more water outgassing as vapor. I feel like those could have a much larger impact than viscosity.
HonHomes
Yes, thank you! I was just going to say exactly that!
You can hear the difference, she's just making it funnier
QuartzPoker
You can also see the difference between them because they have different refractive incidences. In fact just about everything is different between room temperature water and near-boiling water, so much so one group suggested they might be two different liquid phases.
Yasashii93
It is really possible to hear the difference? I shall like to try. Got sauce?
HonHomes
This is where I got that info, BBC's Q.I. it's a panel show (so comedy) but generally accurate when they present stuff as truthful!
https://www.youtube.com/watch?v=2aHJkL9PuGM
SmergBlaerghl
I believe sauce sounds different
UpNorthAndFreezing
HA! https://media3.giphy.com/media/v1.Y2lkPWE1NzM3M2U1dmhyYjNwdGpnbXJueDM2MDh3bWUwYXRpM3dib3BzdGJyYmpjaGd0bCZlcD12MV9naWZzX3NlYXJjaCZjdD1n/oKzYzmKjlPgEU/200w.webp
SmergBlaerghl
Do you have access to hot and cold water...?
Yasashii93
Yes. But to be scientific the test would have to involve some sort of mechanism to pour the water at the exact same rate to avoid making a different sound from just pouring the water harder.
Also: what about the turbulence of water being poured from a simple pot? That will always introduce randomness into the system in terms of sound.
You could do laminar flow but then will that even make a noise? Maybe, but it would have to be poured from very high up.
I see some engineering challenges here.
SmergBlaerghl
I shall eagerly await your report đ
TurnsOut42WasASlightMiscalculation
While indeed a controlled experiment would be necessary for a high degree of certainty to your results, I think you can adequately resolve the question with a little time spent in your own kitchen. Attentive observation is a powerful tool in itself
Neurisko
To be scientific, someone *else* would have to record a bunch of different hot and cold water pours, and then present them in random order, to as many different people as possible, and have them respond H/C to each one.
butnotthatkindofdoctor
You're overcomplicating things. As long as there are no systematic differences in pouring between temperatures, sufficient samples both in the number of trials per participant and the number of participants will give us reasonable data. The whole field of inferential statistics is designed to help separate signal from noise.
koffiejuffrouw101
Sounds plausible (pun intended), but would you actually be able to hear the difference? As an average person
IlsPls
Pour hot or cold water from a kettle into a mug, you can definitely tell the difference if you pay attention
GuapoGuayaba
If you have a tea kettle and water you keep in your refrigerator (filter pitcher, bottles, etc) you can do a side by side to listen to the difference in identical mugs. There was a sound loop in an RPG that had hot water pouring for 5 seconds of its 20 second loop and thats how I learned the sound was distinct
Tarmaccian
I do it daily.
My house hot water takes a good couple minutes to get to the shower, so I run the bathtub faucet in the morning, which is about 4â less piping than my shower. When the pitch changes, I know the showerâs going to start warming in a few seconds.
OverwhelmingSurplusOfDiggity
No, thatâs a plumbing thing.
But you can pour cold vs hot water into a cup from your kettle, and easily tell the difference
koffiejuffrouw101
Ah yeah! I realise i do the same with my sink faucet. Whaddaya know
BishlamekGurpgork
My understanding is that this is usually about the metal. What you hear is usually a valve or other bottleneck, and temperature makes metal expand or contract, and resonate differently.
CarInAVet
I do the same.
TurnsOut42WasASlightMiscalculation
Do you have an aerator on the faucet? I would think that would interfere. (But overall I agree that there is a discernable difference)
Tarmaccian
It âinterferesâ, indeed!
As room-temperature air mixes with hot water, it expands more, making larger bubbles, which in turn have a lower frequency than the same aeration n cold water.
So it does have an effect, but just adds to the observable difference.