Got a better idea: Increase science funding. Compare life in 1900 with life in 2024 -- the difference is science.

Mpemba effect has a simple explanation. The hot water was frozen in refrigerator that has a thermostat. A thermostat detects very hot temperature inside and sent a signal to motor. Refrigerator's motor worked hard and hot water became ice faster. Q.E.D. You can measure the electricity meter readings

kzbin.info/www/bejne/Z4bZg516Z6adg6c

actually i did not get wheter the Mpemba effect exist or not . thank you )

Until scientists reconsider their views on the structure and functioning of atoms, they will not be able to understand many physical phenomena.

Btw, for anyone the video is created by @SYSTEMSounds

Perhaps the impeda effect is dependent on some outside independent variable.

Its because water doesnt freeze at exactly 0 deg celsius. I think that in slightly lower pressure (to help with the expanding of ice) and no gravity you could freeze water at 2 or even 4 celsius. No laws of thermodynamics broken, its just complex chemistry.

Aracely Mount

My humble explanation to submit to the Royal Society: _Water is Magic_

This whole subject needs tighter parameters to be sure. How 'hot' is the hot water? How 'cold' is the cold water? How cold is the freezing environment? What are the other variable parameters (Air movement, container type, surface area, and the list goes on...)? Control the conditions and you can get either answer.

Mraz Mountain

Simonis Crescent

It doesn't make sense to me

I think it is important to understand the difference between the first thing he talks about until 6:20 in the video. The Mpemba effect has to do with Water freezing into ice crystals. The observation is that hot water turns into solid ice faster. Any liquid freezing out into crystals depends on randomness, because the crystals need something to cling onto like a spec of dust, a stir rod, etc. but one or all of the 5 listed mechanisms in the beginning of the video may explain why the crystals and therefore a solid block of ice may form faster with hot water than with cold water. But what he is referring to at the end of the video is time to liquid is super-cooled to its freezing point at atmospheric pressure 0C. Which is always faster for cold water. So practically if you want your ice for your cooler, drinks, whatever faster, use hot water. If you want to your beer to cool faster and you bought it warm from the store, put it in the freezer and don’t try to heat it first.

Water remembering its previous states indeed sounds insane... until you remember and realize that photons know when they are and aren't being observed.

Fab doco, tops!

Lay them on! We love your interests and explanations and thinking. Cheers

If you have different composition and contents of the ice-cream you can actually freeze hot faster than cold.

These videos are gem because they introduce a new information tell complete details about the information and then at last tell you that the information is irrelevent or unimportant trully gem of a video.

PATHETIC!!! The Mpemba effect so is easy to explain that even a PhD should be able to explain it. The key is the __ ________ __ _____. Duh! 🥴 Which is why _________ _______ ____ _______.

It would be _Sooo Cool(!),_ if water molecules (or _any_ molecules {or any element}) had a memory of their previous temperature(s). The applications would be endless! (even though I'm not educated enough to think of any applications, but I'm pretty confident there'd be a whole bunch).

U have another channel besides vertasium...i just did not know about this...i thought someone might have copied ur video😅😂

I wonder what will happened if we reverse the experiment.

Maybe some freezers will work harder because they detect heat 😂

The last sentence that he didn't say but shut off? _Because thermodynamics it's already hard enough._

Generations of Canadian kids have thrown boiling water in the air to watch it turn into a spray of snow. I've never tried it with cold water, though.

I have seen this theory being empirically tested and it wasn't proven.....so....hmmm.....why would one believe this video.

the hot container will aslo create a bigger airflow on the outside, cooling it down, since hot air raises and cold air replaces it.

You saying that the photons takes some of the sun's momentum?

When you heat up water, you give the water molecules more energy. They start moving around faster and faster. So, when you cool down hot water and cold water to the same temperature to make ice, the hot water already has some molecules moving really fast. When you put both hot water and cold water in the freezer, the hot water has more of these fast-moving molecules. This means that hot water starts to freeze faster than cold water because it's already got some molecules that are moving towards becoming ice. It's kind of like having a head start in a race. The hot water has a bit of a head start because some of its molecules are already moving fast, so it can turn into ice faster than cold water. Isn't that cool? Even though it might seem weird, it's just how the tiny particles in water behave!

Please make a video on what things are needed for a water to freeze , because i tested a simple experiment during winter when the outside temperature was around -7 degree Celsius , but i didn't see the water changed to ice Why ? There should be something that plays role like temperature

I guess the real issues is how or why do we see this effect be real in the real world but we do not see it being real in a controlled scientific environment. As someone who works in plumbing industry we see hot water lines freeze before cold water lines all the time even sometimes only the hot line freezes? and apparently humans have been observing these things for hundreds of years yet they are called false? seems improbably that something observed which is the definition of science then is proved to be fasle by the same definition of science?

I know this probably sounds dumb but I keep on thinking that it may be possible that the rate of change may have momentum or in other words because the hot water, with far more thermal energy, begins cooling at a faster rate as it has more energy to give, and it continues to cool at this greater rate compared to the cooler water with less thermal energy that started cooling slower as the difference in temperature was lesser than the hot water and the freezer.

I dont care what anyone says. Hot water has further to go to get to freezing. Plain and simple. That's all there is to it. END OF DISCUSSION....PERIOD

May i knkw where you have got this knowledge from ?? Means ,from which book,if you please!🙏

Good afternoon sir , 😊🌞

Hello😊

A happy ending.

The moon, nor the earth, or Sol has been here for a billion years. Sooo no

중간에 온도가 더 높은쪽의 비커는 냉동고에 넣었을 경우 주변 얼음결정을 녹여 액체화 시켜 비커와 온도가 높은 비커와 냉동고의 열 전도 효율을 높인다고 한 부분에서 착안한 아이디어로, 온도가 높은 물은 증발이 이루어 지고 있으니 기화한 물이 차가운 온도로 인해 공기중에서 결정화되어 다시 비커에 떨어집니다 그렇게 되면 온도가 매우 낮은 물 결정이 비커로 떨어짐으로 인해 더욱 빠르게 온도가 내려갈 수 있겠죠 이는 냉동고 속이 낮은 온도로 인해 건조할 것으로 생각되었으며 물은 0도에 가까울수록 활동이 적어지는 성질을 상정한 생각입니다 이렇게 작성하니 다른 여러 가설들이 복합적으로 이루어져 이러한 현상이 일어나는 것 같기도 하네요😅

yeah I learn something with this video: that Mpemba effect doesnt exist but it happens everywhere anyway.... -.-'

My brain hurts. This makes no sense

Well I didn't expect that ending. And there I was thinking that the faster moving hot water molecules pull the freezing air around it quicker than the slow moving cold water ones.

Notice how the researchers who all make fat 6 figure salaries never once mentioned making thirf funding go farther bry making their research cost less, or paying less profit markup for materials 😏

1:06 I didn't know freezers had been invented during Aristotle's time

How was aristotle going round freezing his water in ancient greece?

Fantastic video! Wow!

foreshadowing the gecko video 5 years before

You know we didn’t used to have as well made filters , or even filters at all as we do now. Maybe the older world examples can be because of impurities that were removed during evaporation.