Condensation of the cool air on the hot glass.
try covering the glass, so the heat particles stay inside the cup, and the hot water stays hot.
Because you're cooling down, thus shrinking the glass, outside MORE than the inside (in contact with hot water)
It means you are hot and then you sweat. The sweat water cools down your body.
When hot water is poured into a glass, the glass expands slightly due to the heat. This can create stress within the glass, potentially leading to cracks or breakage, especially if the glass is thin or has imperfections. It is best to use tempered glass or heat-resistant glassware for pouring hot liquids to minimize the risk of breakage.
Put cold water in the glass that is inside the other, and soak the outer glass in hot water. The hot water will swell up the glass and the cold will "shrink" the inside glass... then carefully wiggle them apart.
When hot water is poured into a drinking glass, the temperature difference between the hot water and the glass can cause uneven expansion, leading to stress in the glass material. If the stress exceeds the glass's structural integrity, it can result in the glass breaking. Rapid heating can also cause thermal shock, further increasing the likelihood of the glass breaking.
When I first started exercise, I would sweat so much. After a few months, the sweat stopped, even I worked really hard. I started to drink a glass of hot milk or just hot water right before exercise, guess what, I sweat again! 2nd answer: You always sweat. It may evaporate right off, so you do not notice any drops of sweat. The exception is if you are suffering from sun stroke . . . your body cannot sweat any more, and you are on the verge of dying from being too hot.
Put cold water inside the glasses. Dip the outer glass into hot water. The outer glass expands, the inner glass contracts.
Its called water vapor.Its happens when the outside is really hot or warm and the inside of whatever is cool or cold.
because the glass will pop if you put the very hot water into the glass
It's called condensation. it's not sweat. There's microscopic liottle drops of moisture in the air that get collected toward cold areas, on a hot day, it has no where to go but toward a cold glass of water.
When hot glass comes into contact with cold water, thermal stress is created due to the quick temperature change. This stress causes the glass to expand and contract at different rates, leading to uneven distribution of pressure and ultimately causing the glass to crack.