Come and share some strange things you have encountered in the swimming pool?

My buddy is 173 tall and can't swim, once went to a local swimming pool, he saw others in the pool like a fish in water, and was eager to try, when the pool had deep water and shallow water, the shallow water depth was 170 and the deep water area was two meters, he slipped into the shallow water area by himself, and looked at the depth scale 170, and he thought about my height 173 This 170 water depth is no problem, at that time, only the height was not the height of the nose and mouth, and he jumped into it rashly, and he was completely stunned when he got out of the water, and stood at the bottom of the water The nose and mouth are underwater, Because he couldn't swim, he was furious, and as soon as his feet were forced, his nose and mouth were exposed to the water and shouted for help, and then the water flooded his mouth and nose, and he kept jumping up and holding his breath, and once his mouth was out of the water, he shouted for help, and he took a breath and sank to continue to flood the respiratory tract, and kept jumping up and shouting for help, and kept continuing to sink, at this time the lifeguards rushed to his side, fished him up, and went ashore to be frightened, and he kept saying, this math pit man, counting the top of the head and not counting the elevation of the mouth and nose haha, this thing is still laughing when it comes to it. ‍‍

There are 6 people in our dormitory and 5 northern gentlemen, most of whom are landlubbers. Once to go swimming, a big brother in the dormitory showed us superb swimming skills, we looked at him intently in line with the idea of diligence and studiousness, only to see a start followed by a non-standard front flip and fell into the water, diving 0 points level, after I think I saw not a person swimming, it was clearly a powerful small motor, two arms 360 degrees slapping the water, half of the pool was quiet in an instant. ‍‍

There are special swimming lessons for children in the swimming pool, and then I saw a group of children practicing holding water, but one of the children has been trying to drink water because they are afraid of suffocation.

My friend went swimming with bloating, but he swam and seemed to be suddenly clear, and then he farted uncontrollably in the water, and then I saw him splashing vigorously.

My cousin was playing with the shark toy in the swimming pool, and while swimming, he said to my cousin, "I don't look like a shark, and then I recognized the wrong person, it's a little girl."

1. Copper sulfate should be put into the pool, about 1000 cubic meters to put 1 kilogram, and the copper ions are blue, so it looks blue.

2 But not every swimming pool looks blue, copper sulfate is mainly its algae removal effect, but some swimming pools have less algae, and there is very little copper sulfate, and the chlorine lizi decomposed from the bleaching powder is a little green, plus the surrounding trees, so some pools look a little green, but very light green.

3. Correct the above statement, sodium hypochlorite is disinfectant, chloride ions are green, sodium hypochlorite and alum will not make the water blue. There is still only one blue: copper sulfate.

In the case of a sparkling water rapid heat exchanger, the swimming pool water passes through the pipes and the heat medium passes through the pipes.

It's not realistic for the greenhouse effect to help the water in the pool heat up quickly, unless the sun is shining every day, and you have to wait more than 10 days.

The blue color is because of the copper sulfate relationship.

The blue color is because of the dish soap.