Why doesn't frost form on windshields when the car is under a roof or carport?

Question

I need an answer that has something to do with chemistry, physics, or other branch of science. I definitely need an answer that sounds "very intelligent".

Answer 1

Alrighty, hopefully this is the kind of answer your looking for.

This kind of thing occurs for the same reason that cloudy nights are generally warmer then clear nights, and fog is present more often after a night with a clear clear sky then a cloudy one.

What happens is that heat radiates off of things constantly, that's how they cool (taking wind out of the equation), when there is a cover oversomething (clouds... or in your case a roof) this radiated heat is actually contained and "bounced" back at things. this causes things to retain temperature a lot longer and therefor cool a lot slower. since the temperature loss is a lot slower it doesn't allow water moisture to jump a state and freeze instantly as easily.

Answer 2

make certain that in case you have an A/C button on your sprint, that it extremely is on. aircon does extra suitable than cool the air, it removes humidity. subsequently, in the journey that your A/C button is on, it is going to de-humidify and do away with the moisture. regrettably, whilst it gets too chilly exterior, the A/C will no longer paintings, because of the fact it has a swap in the device that shuts it off. yet at temperatures above 30 -35 stages, it is going to nevertheless function. If this could be a sparkling automobile, have the dealership examine that the switches on your A/C device are working in accordance to the manufacturers settings. You did no longer point out what sort of automobile it extremely is.

Answer 3

Wadd is correct.

It has nothing to do with dew settling or any nonsense like that. Dew and frost condense out of the atmosphere based on how cold an object is--they don't fall onto the object (unless it's precipitating, which is another story entirely).

An object exchanges thermal radiation with everything it can see.

So if you're under a carport, you're exchanging radiation with the carport (whose temperature is the air temperature on the ground).

If you're under the sky (cloudy), you're exchanging radiation with the clouds (whose temperature is the air temperature of the atmosphere--pretty darn cold).

If you're under a clear night sky, you're exchanging radiation with deep space (whose temperature is a few kelvins)

So you'll be warmer under a carport than if you're under the clouds and warmer under clouds than under a clear sky.

Answer 4

Because the moisture in the air has to settle from up above and it doesn't go under the roof or carport.
and in some cases the carport will trap enough heat from say the house to burn off the minimal moisture that is flittin' around in the wee arss of the marnin....Dang got a wee bit irish there

Answer 5

Hi. Frost is frozen dew. If an object has a temperature lower than the dew point then dew will form on it, such as a cold glass of hydrogen dioxide. If the temperature is low enough then the dew will freeze.

Answer 6

when the temperature drops it starts freezing the moister in the air and those tiny particles begin to fall. if your car is under a roof, then all those frozen particles fall on the roof instead of the car. It all has to do with moister and temperature. why do you think that you don't get front in the mornings during summer? Because there isn't enough humidity to do that.

Answer 7

frost is frozen dew. dew is water vapor wrung out of the air at night by temp inversion. unless the air is VERY saturated, you won't get dew under a covered surface.

Answer 8

I would say because the dew doesn't get on the car, so when it gets cold there is nothing to freeze

Answer 9

cause dew can't settle when it's covered.

Answer 10

b/c your car is dry