Saturday, December 26, 2009

Why does air from a fan melt a ice cream bar faster than a 100 watt light bulb?

The light bulb uses radiation which is not as effective as convection in this case.Why does air from a fan melt a ice cream bar faster than a 100 watt light bulb?
Ice cream is at a lower tempMay (be zero) than the room temp


So fan tranfer heat by convetionan faster than the bulb who does it by radiation

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