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I love how the ice cube that wasn’t melting looked kinda like a badly photoshopped in ice cube.
@Abigase no that means that the experiment seems unnatural
I don't remember if it was a museum or something else, but I once was at a place that had an exhibition. There they had this contraption with two, intertwined copper coils. When you touched it, it felt like you got burned, so you pretty much let go by reflex. However if you decided to hold on you could feel that one coil was warm while the other cold. I thought that was pretty cool.
@Benjamin Gooch I love the exploratorium!
Ngl idk wtf that means
Thats cool i remember that happineing with everyday objects, you touch it thinking it hot an let go quickly but if you choose to hold on it usually doesn't burn
It was a museum that was my experiment which you thought was cool, thanks and glad u liked it🥰👍
Your body does not feel hot or cold but "how fast heat it is transferring to the object you are touching". So the object that feels cold has a greater thermal conductivity and so is able to conduct heat better from the hot air or table to the ice cube, making its temperature rise much faster.
true, and conversely it takes the heat from your hand rapidly which makes it feel cold. silver has even better thermal conductivity, so if you take a piece of silver and hold it in your hand for a moment, it can cut through ice extremely rapidly until the ice absorbs all the heat from the silver
Was going to say that, but you said it much better.
Wooooow, I've never thought about your body sensing the rate of change of temperature instead of just temperature, that's a lightbulb moment right there. THANK YOU, I LOVE YOUR CHANNELS
thats actualy wrong
@Mortario1 yes but the ACTUAL receptors that detect it because their absolute temperature changes changing the conduction properties of the ion channels.
Your body detects either a loss of heat or gain in heat, which we interpret as either "cold" or "hot". As a general rule, when we touch something that feels cold, it means that we are touching something at a lower temperature than our body. However, this effect is exaggerated when you touch a conductor because your body is losing more heat more quickly. You use the term "rate of change in temperature" when the correct way to say it is "rate of heat loss" :) hope that helps in understanding
@Farhan Ali we do sense rate of change of temp, like when you touch metal you will feel its cold because the metal is absorbing heat from your hand quickly
I agree with your username 😁
I remember my parents telling me that when I felt the underside of the table (it had like metal supports) that it wasn't actually cold, because if it was, the room would heat it up, the thing that I was actually feeling was the metal, being better at siphoning energy from my hand, thus feeling cold, because I was getting colder
I loved it when my professor explain it, that to feel cold or hot, heat needs to flow into, or out of your finger. A conductor at room temperature would feel cold because heal will easily move from finger to metal, whereas wood will not feel cold because it is an insulator and heat won't flow.
My science teacher actually had us do this experiment. It was pretty fun.
This reminds me of a science experiment video I watched in a class where the compared surfaces were a metal baking tray and a piece of styrofoam. Same difference in feeling by hand, and same outcome when placing an ice cube on each surface.
Never seen an ice cube melt so fast
I ❤ these science shorts! Thanks for sharing & educating A+ 🤯😊
The body can sense both, absolute temperature and temperature change.. just hold your hand in warm water then slowly heat it up. You can't let it there until the water starts boiling. At around 50 degree you'll give up regardless of how slow it will be heated up.
@Jrockblam so a thermometer would tell me my absolute temperature but if some other human touches me it would feel the rate of temperature difference?
Not the rate of change of temperature of the material, but rather how quickly the material is transferring heat to your hand (or whatever it's touching). That's why you can sit in a sauna at 90C while 90C water will instantly give you bad burns, the water dumps heat into your skin much faster than the air.
@Black That's not true. Insulators still have the temperature difference, they just don't exchange heat well. What your body feels is the exchange of heat, and if the object isn't transferring much heat to you, it won't feel hot even if it is at a high temperature.
What he means is you can't sense the actual temperature of something external to your body, sure you can sense if your hand is at a high temperature, you can't accurately sense the temperatures of two different external objects with different conductivity though.
@Jrockblam Aw cmon i forgot the names of the biological stuff. So i can't really explain it anymore.But i know that there's not just one kind of 'things'... There's a mix of those 'things' which can throw signals for a sudden temperature change and those 'things' which can throw signals for a specific limit of temperature, usually a temperature well before the biological stuff starts to fall apart and before the biological stuff becomes critically inactive. And both 'things' will contribute to temperature feelings and pain, depending on their activity. So pain doesnt really exist on it's own. Its merely a placeholder for too many signals in a very short time.
Both are the exact same temperature. When I feel this one it’s cold and when I feel this one it’s warm.Mind blown.
The body sensing the rate of change of temperature honestly explains a lot
hearing that your body detects rate of change rather than absolute temperature actually makes some things make sense. Like how touching super cold things can feel like burning initially
I remember doing this experiment in science class
Thermal conductivity of aluminum (a metal) and catalytic action of the aluminum are the TWO factors.
I think this is the same reason that water in sea always feels colder than air, when in reality water is probably at even hotter temperature than air but water has better heat conductivity so it "drains" your body heat faster making it feel colder.
This is in relation to the specific heat capacity of an object right? Water has a high SHC being around 4180 kJ/kg/K whereas aluminium has a SHC of around 215 kJ/kg/K
Immediately knew it would be the cold one, if they’re the same temp, they’d only feel different due to heat dispersionYaaay computer cooling nerd for the win
It would actually be the opposite way if the temperature was above 36,6
Put a book in a freezer and a similar sized steel pan. They'll be at the same temperature, but the book won't feel as cold. You can double check the temperature with a temperature probe
Our brain only knows differential equations. Everything is converted to differential equations before getting solved.
I should've used that ability on my exams somehow
Oh so now I get it No wonder the aluminium foil is used to keep food warm 😂
Can you explain please
its the same idea when u cook a frog in a pan gradually as opposed to suddenly. it would leap out if it was sudden, but gradual, it wouldn't until it feels hurt already
I can't believe that I got it right first try! Man I feel like a genius
At the start, I thought he was holding a flip phone lol
Same, I thought it was a photo related experiment 🤣
This is like the only thing you have ever said on this channel that I actually already knew lol
My physical science teacher did that riddle and we all got it right lol
Thermal conductivity is high for the one who felt cold since it's conducts your body heat quickly making you actually and feel cooler while thr one that felt warm doesn't conduct your temperature as good hence your body stays warm as before and makes you feel warm
We did this in my science class where one block was metal and one was plastic and we had to find out which on was the conductor and which one was the insulator. Plastic one is insulator and metal is the conductor.
So I'm assuming that because it was made out of aluminum that it gave off its heat to the ice cube using the laws of thermodynamics. And the plastic insulated the heat and retained it and didn't give it to the ice cube. But you didn't explain that. You kind of went on the side tangent but never actually explained what was happening.But I still love your videos keep up the good work
I remember last year, our 4th grade teacher showed this to us, and only a few people got it right, I was one of the smartest, still didn't get it, so yeah 🙃
Conductivity, not temperature is key.
You mean specific heat capacity
This is the same experiment my professor did when he taught us heat and thermodynamics
This is the same experiment Derek form veritasium did 7 years ago
My guess is that the first one is metal, and the second one is a different material like wood painted with a sealer
I remember doing this in my 6th grade science class
Feeling oddly proud for having figured it out before you explained it :')
I did this in 4th grade with my class. Thay knowledge stuck with me for years just because I got to experience it for myself. But if Im just reading it, I will not remember the how or the why 😂
my science teacher showed me this before we started learning about energy
What did you have to hold/touch?Was it warm?Was it something like potatoes?
I did that a few months ago in school it went good
We did this experiment in class to explain specific heat capacity
I actually already did this experiment in 1st quarter lol
Kyle Hill has been saying this for a while I love the shower matt example he uses
But melting and feeling warm are the same thing: transfer of energy to the ice cube or to the hand. Why wouldn't the ice cube melt then or conversely the pad feel temperatureless?
the plates are room temperature. your body is above room temperature. the aluminum plate feels cold because it has higher thermal conductivity, which means it wants to sap your heat and equalize temperature with you when you touch it. the plastic has low thermal conductivity, so your body doesn't lose heat when you touch it. same for the ice, which is below room temperature. the aluminum with high thermal conductivity is willing to transfer heat energy to the ice. the plastic plate does not readily transfer it's heat energy, so the ice cube melts slower.
The cold one disapates heat while the warm one insulates
"doesn't sense temperature but senses the rate of change in temperature"is that why you don't feel heat from a candle immediately?
Look at it this way: the aluminium felt cold because it was sapping warmth from your skin. It'll do the same with the ice cube.
No because by your analogy it would be sapping the warmth from the ice cube keeping the ice cube cold
Lmao I did this same thing in science class 2 weeks ago
I figured it out immediately lol
You said the aluminum feels cold. I think you mixed them up. The aluminum should feel warm
Lmao I did this exact thing at the beginning of school with that same stuff
"Your body doesn't sense temperature, it just senses the rate of change of temperature"So...if you burn to death over an extended period... would you eventually not "feel" the heat? I don't know if that's relieving or terrifying. Preferably I just don't burn to death.
Nope you would feel it as soon as your body temperature is higher than normal. This guy is simply completely wrong
My teacher showed me this back when I was in 5th grade super cool
i remember doing this experiment in 8th grade science
That's the same reason why you can walk barefoot in the wooden floor of a sauna that if at 100° Celsius, but you can't put your hand on a bowl of water or hold a piece of metal that is at the same temperature.
LOVE FROM KERALA I ALWAYS WATCH UR VIDEOS AS A +2 STUDENT IT IS VERY HELPFUL FOR ME
@Pranav MS 😘
its like the same thing woth chocolate. when you put chocolate in the FREEZER it melts faster when you take it out as opposed to when you put it in the normal part of the fridge it doesnt melt as fast
The moment you realize your body is doing Calculus but your brain struggles with it.
Hmm damn I never knew that we sense change of temp✨ thnx for actual knowledge
Woah the only experiment on this channel that i knew what was going on before the explanation
In science we did this and pair, idk got some candy. Tried to use my metal sharpener cuz ik aluminum and that can transfer heat and cold melting it faster. Kids started cuping it around their hands blowing but my sharpener was to small. I took my waterbottle smashed it into a snowy powder and it melted in seconds after. Won me and my partner some candy
The riddle would make sense if you provide the actual temperature instead of just stating that "they have exact same temperature". If the temperature was above 36.6, the result would be the opposite
Imagine if you had a plate made out of copper that shit would of melted super fast.
The one that's colder right? Because it's conducting heat (same reason ice feels cold)
Your body doesn't detect the rate of change of temperature. It detects the temperature of it's own nerve cells, which are beneath the skin. What you're really inferring is thermal gradient. You know something is hot because you feel your skin get hot, but if it's hot enough it will have already transferred enough heat to cause a burn before your body even knows it.
Lmao. Your body actually does detect the rate of change of temperature, and we perceive it as something being colder/warmer than us depending on the ambient temperature. Metal will feel colder than other materials most of the time, even when it's the same temperature. Why? Because it's conducting heat faster. Away or to your hand. So yeah, your body detects exactly the thing you said it doesn't.
Thermal conductivity if u put ice on a thermal processor it will melt instantly because of the conductivity
It would do the same thing if the Plastic pice were to be wood. I call it Energy transfer.
I did this experiment in my 8th grade science class
I thought heat conductivity as well.
I like how fruity this cup cake is
Hope you're enjoying your cupcake.
Maybe this is why the lady on Hell’s Kitchen thought cold water boiled faster than warm water…
It should have been silver instead of aluminum.
I want ActionLab classes for chemistry and physics and Law by Mike for my Law classes
OOH! So this is why the frog boiling paradox is possible? Sensing the rate of temperature change doesn't make much sense to me tbh, why is that a thing?
The one cold is prolly metal so melts easier
Haha I already knew because I did that in science class
Remember kids, the feeling of cold is something stealing your energy. The feeling of heat is you stealing energy.
Both materials steal energy in this scenario though (at different rates)
The one that feels cold does so because it transfers heat better
My teacher did this absolutely blew myind
"...your body senses the rate of change of temperature..."Pretty sure that's WRONG. Highly misleading at best, and id even say outright false in the way you are implying it. Your body feels the temperature of itself, not the surface you're touching. The surface you're touching only matters in how it transfers heat to or from your skin to change its temperature. Touching metal (that's of a different temperature than your skin) will rapidly conduct heat to or away from your skin and will change the temperature of your skin faster. You're not "sensing the rate of change", your just getting to a different sensible temperature faster.Touch the 130 degree silicone for long enough and it will burn you. It will just take a long time to get to that temperature because of the slow transfer of heat to your skin.
When something feels cold it's because it's sucking the heat out of whatever body part is touching it.
DUDE I GUESSED THE COLD ONE!
lol love the "riddle"
Is this a form of human superpower? We don’t get burned by non-conductive heat?
I did this in science once
Idk Why I Thought That Thermometer Was An Old School Nokia Brick 🤣🤣
Lol I learned this in science in grade 6
Dude what... "The human body doesn't sense temperature, it just senses the rate of change of temperature" ??? You can't just throw that at the very end of the video!! And that can't be true. Someone help.
Very "Insulative"? I must add that word to my technical dictionary.
What was the first made from?
Your hand feels the conductivity.
Idk if you've already put water in your air compression chamber doo bap thingy but I wanna see what happens when you suck the oxygen from the water does it just make hydrogen or does something else interesting happen?Edit:oh its the vacuum chamber lol
@Sam C 95 thanks
Nothing is cold, heat is being absorbed. My brain hurts
This is why if you are air thawing some meat, you put it in a melt bowl or baking sheet vs something plastic or ceramic...
I literally did this last year in school for 6th grade
Yea. And now make their temperature higher that your hand's and it will be the opposite. It will become intuitive.
Our body senses heat transfer, not rate of change of temperature. These are different, e.g. for things with different specific heat
I was hoping youd ask the comments for an answer. I had actually seen this one before
I think the heat of the ice cube rises cuz of the cold one 🤔
Love your vids
Body doesnt sense temperaturePreheat hands in ovenTouch warm engine oil and hot partsProfit