Put a cup of hot water and a cup of cold water of the same capacity into the refrigerator at the same time. Under the proper conditions, the cup of hot water is the first to freeze.
This phenomenon is called the “Pembar effect”. The Pemba effect was once a big mystery in science. The Royal Society of Chemistry even offered a reward of £1,000. The last prize was the Nicholas of Zagreb University in Croatia. Kobregovich, his explanation is that the convection of hot water will drive the water flow, allowing the hotter water to accelerate to the colder edge of the container.
However, Bregovich also pointed out that the freezing point of water is not fixed, so other conditions should be considered. Water may become too cold and remain liquid below zero. The temperature at which water freezes is not necessarily zero, so the data for these icing experiments will vary slightly each time.