Transparent plastic swimming-pool covers called solar heat sheets have thousands of small air-filled bubbles t?

Transparent plastic swimming-pool covers called solar heat sheets have thousands of small air-filled bubbles that resemble lenses.





The bubbles in these sheets are advertised to focus heat from the sun into the water, thereby raising its temperature.





Do you think these bublles direct more solar energy into the water? Defend your answer.Transparent plastic swimming-pool covers called solar heat sheets have thousands of small air-filled bubbles t?
The bubbles will act as insulators being air filled - but focusing the light like a lens is not going to increase the toatl amount of energy entering the water - (they will only increase localised heating)Transparent plastic swimming-pool covers called solar heat sheets have thousands of small air-filled bubbles t?
No


these can not


because the total area of the lenses is not grater then the pool





the total sunlight that falls on the pool remains same, or even less because some light is absorbed in sheet.





but sheet can help in heating the water because it do not allow water to loose heat due to evaporation





It acts as like a greenhouse shield

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