It's a testing to protect the water from evaporation.
I'm not sure such plastic black balls are effective but there are some different opinions.
A biologist worries "I don’t believe that in the long run this provides a good strategy in protecting the water. I believe that this will increase evaporations due to a greater surface area as well as providing a great place for bacteria to have a nice environment to grow protected from UV light that kills it.
To protect from evaporation
Because there is little rain in the summer of Los Angeles, the water measures seem to be very serious.
返信削除However I also think in a question that putting in plastic black balls in water prevent water evaporation.
Because water surface reflects the sunlight, but the black ball facilitates the evaporation of water by absorbing the heat of the sunlight.
By the way, it rained after a long absence from the early morning of today, didn't it?
My home is baseball cheering of the grandchildren today from noon to the evening following yesterday.
It's got cool and very comfortable today. I can spend very quiet Bon period and have a reunion of the high school in the evening. We'll see older faces but still young in our heart there!
削除Maybe, the lid is not good.
返信削除It's technology is difficult that while evaporation prevent and protecting the quality of water.
In Toyama, clean water is rich. So, we are happy.
By the way,
Granddaughter had went back.
Because a busy days continued, spending time with granddaughter was small.
Today, I clear up their room little by little.
Yes, we are happy to have such a great natural resource.
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