How does hands get dried in room temperature when water boiling point is at 100C?

Hey there! I'm glad you asked this question because it touches on a really interesting concept. Let's break it down in a simple way.

So, you've noticed that when your hands are wet, they dry out over time even at room temperature, which is way below the boiling point of water (100°C). The key here is a process called evaporation. Water doesn't need to boil to turn into vapor and disappear into the air. At any temperature, some water molecules on the surface of the liquid have enough energy to break free and become gas. At room temperature, this happens slowly but surely. When water evaporates from your hands, it takes away heat from your skin, which is why your hands might feel a bit cooler as they dry.

Another factor is the air around you. If the air is dry (low humidity), it can hold more water vapor, so evaporation happens faster. If it's humid, the air already has a lot of moisture, so drying takes longer. The movement of air, like a breeze, also speeds up evaporation by carrying away the water vapor near your skin.

To wrap it up, your hands don't need to reach 100°C to dry because evaporation happens naturally at room temperature. It's all about water molecules escaping into the air over time. Pretty cool, right?

Fun Fact: Did you know that evaporation is also how sweat helps cool your body down? When sweat evaporates from your skin, it removes heat, keeping you from overheating!