My hypothesis is that if a person closes his window blinds to keep the summer heat out, then turns a light on so he can see, the room will end up hotter than if he had PARTIALLY closed the blinds and let the INDIRECT (not direct) sunlight in. The heat generated from indirect sunlight is miniscule to the point where it would make no appreciable difference in the room temperature if the blinds were completely closed or partially closed. (Think about all that intense heat generated by a full moon. It's the same principle.)
2007-08-28 15:29:07 · 6 answers · asked by The Oracle of Omigod 7 in Science & Mathematics ➔ Physics
The fact is that the sun just produces more heat. Try it. Put a lamp or two in a room with the blinds closed. Then measure the temperature for a day. Do the same with blinds partially open too. 2 60 watt lamps cannot compare with the fusion going on in the sun.
And it's not just the sun. You have to remember that in the summer the air outside is hotter than the air your house. Closing the blinds tight prevents that air from getting heated up by contact with the window, in contact with the hot air outside. It insulates your house. Open them up a little bit, and the air can move more freely.
2007-08-28 15:33:45 · answer #1 · answered by Chris2457 2 · 0⤊ 0⤋
Gosh, I really don't know, but I insist on keeping my blinds closed. And I do believe it is cooler. I have dark blinds inside, showing white to the outside. The floor is definitely hotter when the blinds are open.
2007-08-28 16:08:36 · answer #2 · answered by Chloe 3 · 0⤊ 0⤋
Your hypothesis assumes relative equality between the two photon sources. The solar radiation your room would receive if not blocked would produce many times the amount of heat generated by a 60 watt incandescent bulb. Your equation really falls apart if you consider fluorescent lighting.
2007-08-28 15:41:35 · answer #3 · answered by Anonymous · 0⤊ 0⤋
No heat is generated by the moon, moonlight is reflected sunlight. The room will be cooler because you are blocking the UV rays from the sun.
2007-09-01 13:45:33 · answer #4 · answered by johnandeileen2000 7 · 1⤊ 0⤋
Closing the blinds keeps the radiant heat from the sun out.
If the sun is not shining or is not shining through the windows, closing the blinds will have no effect.
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2007-08-28 15:42:03 · answer #5 · answered by Anonymous · 0⤊ 0⤋
The balance becomes apparent.
2007-08-28 15:32:53 · answer #6 · answered by thiru 3 · 0⤊ 0⤋