why does your  windshield get foggy?
464179
The cold air outside causes the window to become cold. The air near the window or glass also becomes cold (loses energy) and condenses on the glass. That's why the rear glass of cars have window heaters so that the glass warms up and makes the water on the glass become a gas again, thus no fog.
1174615
i think its because were on another level of consciousness when we are sleeping so it gets foggy to us when we wake up. one trick i have read is to write down the details of your dreams in a notebook or journal first thing when you wake up because thats when its fresh in your mind.
444733
Unsaturated.  The air can still take on more humidity.  When the dew point is at or above the air temperature, you have fog or other percipitation.
898878
Make sure the suction cups are not misshapen.  The out of shape allows air to get into the seal more easily. \n\nIf they are out of shape, clean them with soapy water, rinse them.  Clean the glass.  Have a container of boiling water nearby.  Drip the suction cup briefly.  It will soften it.  Immediately press onto window glass.  Hopefully it will dry and remove the misshape.
208555
The reason they are fogging up is because they are leeking ever so slightly, and then the water is evaportating from the heat coming from your eyes, causing the moisture buildup. You need to find a better pair of goggles that will not leek. My best recommendation is a pair of speedo racer goggles. Best wishes!
817254
havnt the foggiest, old bean!
429278
um...headlights when driving in the fog to help save lives from crashes.
334289
I assume you mean a fly in the car with you.\n\nThe reason is inertia.  You, the car, the fly, and all of the air in the car share the same inertia, which means relative to each other, you are motionless.  Open a window, and inertia and air pressure differentials will circulate air through the car, and hopefully suck the little bugger out so you can drive in peace.
585097
Moisture forms on things, whether it's morning dew, or heavy fog, or rain.  If there isn't enough moisture for rain, dew forms.
792005
It is the dry air which causes such a problem.  Check for the humidity levels as undue dryness will aggravate your problem.
185627
Duh...it's A*S! And you told it wrong...\n\n"What's the last thing to go through a bugs mind when it hits the windshield?"
593090
the glass in your galsses is cooler then the air escaping from under the tissue. this will fog the glasses, much like coming in from outside on a cold day
687947
You can make a dew shield, which is basically an extension of the telescope tube, by rolling cardboard or a plastic camping mat into a tube shape and attaching it to the end of your telescope tube. Dew only collects on exposed surfaces so if the optics are far down a tube they are less likely to fog up. Many people keep a hair dryer nearby for drying off the telescope. There also commercial dew heaters that battery powered and attach to the telescope.
341213
Static builds up with the friction of your shoes and a carpet rubbing together. Sometimes getting out of your car does the same thing. Most common cause is low humidity. Inside our houses during the winter the air gets very dry and static becomes a big problem. The dryness is usually caused by the heaters in the home. So, if it is a big problem, increase the humidity by using a humidifier.
587814
The rear window of a car is made of tempered glass -- the glass is heated approximately to its softening temperature and then cooled abruptly to put its surface under compression, leaving its inside material under tension. That tempering process makes the glass extremely strong because its compressed surface is hard to tear. But once a tear does manage to propagate through the compressed surface layer into the tense heart of the glass, the entire window shreds itself in a process called dicing fracture -- it tears itself into countless little cubes.\n\nThe stresses frozen into the tempered glass affect its polarizability and give it strange characteristics when exposed to the electromagnetic fields in light. This stressed glass tends to rotate polarizations of the light passing through it. As a result, you see odd reflections of the sky (skylight is polarized to some extent). Those polarization effects become immediately apparent when you wear polarizing sunglasses.
1150116
It forms due to diffraction of light by the small water droplets in fog. It's formation is similar to formation of the rainbow.
1095267
I usually run the car with the defroster on full blast for a few minutes. Alternatively, depending on how cold it is, you can use water to melt the ice. That works well in Florida where if it freezes it is usually in the 20s at the coldest. Never use your windshield wipers on ice as it will damage the blades.