Today I bought a new bookshelf to store many books and summer homework.
I also bought a glass bottle today. It looks like a message in a bottle, originally intended for some romantic gesture at home, but I filled it with water too quickly. The key point is that when I closed the lid, the wooden stopper got wet and easily slipped inside, making it impossible to remove. I tried heating methods, but stopped due to safety concerns without letting the water boil. After cooling for a while, I put it in the refrigerator, but unfortunately, due to the bottleneck design, the mouth of the bottle froze faster than the water inside, so I took it out to prevent it from shattering.
At this point, I found that the bottle was very cool. I brought it into the bathroom while taking a shower, and it was still cool when I came out. At this point, I wondered if it could be used for short-term cooling in the summer. According to ChatGPT's calculations, it can stay cool for about 40 minutes. For me, that's enough, the only downside is that it's a bit heavy. This time, I truly felt the high specific heat capacity of water.
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