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First thing your glasses have to be cold.

Second you have to be in a warm/hot area.

Glasses "fog up" because when the warm/hot water vapor gets near the cold glasses, it turns into the "fog" you see on glasses.

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12y ago
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15y ago

eyes don't fog sunglasses. Breath or humidity might.

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13y ago

Yes when you do not blink for a long period of time, yes they fog up.

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13y ago

Clean it of with a glasses cleaner or a soft piece of cloth(Something that won't scratch the lens)

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12y ago

Condensation. It's either the temp is cooler or warmer outside that the temp radiating of your face.

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8y ago

Glasses fogging up is often caused when you are hot or sweating. The side nearest your face is moistly warm, while the side away from you may be colder.

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Q: Why does a pair of glasses fog up after a shower?
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Related questions

When you have a cold shower does the bathroom mirror fog up?

No. The steam from a hot shower fogs the mirror.


My glasses fog up mostly when I get nervous HELP?

Your face gets hot when your nervous which leads to fogging up your glasses like when your out on a cold day and then come into a warm house your glasses cloud up.


Why a bathroom mirror fogged while you take a shower?

Cold air holds less moisture than warm air. When you run the shower with hot water, the moisture condenses on the cold mirror surface causing it to fog up. If you run the shower cold, the mirror will not fog up.


Why do your glasses fog up on one side in the morning?

When your glasses fog up in the morning, it's likely due to a temperature difference between your warm skin and the cooler air. Moisture from your skin condenses on the cooler lens surface, causing it to fog up. This effect can be more pronounced on one side if that side is closer to a heat source or if there are uneven air currents hitting your glasses.


What are the changes in matter when eyeglasses fog up?

When eyeglasses fog up, it means that water vapor in the air has condensed on the surface of the glasses, creating tiny water droplets. This change is reversible and temporary, as the fog will dissipate once the temperature of the glasses equalizes with the surrounding air.


Why does a hot shower fog up a bathroom?

because when water is hot, it evacuates and turns into gas which fogs


What prevents glasses from fogging up?

Preventing glasses from fogging up can be achieved by creating a barrier that stops warm breath from reaching the cooler lens surface, such as using anti-fog sprays or wipes, adjusting the fit of the glasses to improve airflow, or using products like anti-fog coatings on the lenses. Additionally, ensuring good ventilation can help reduce moisture buildup that leads to fogging.


Why doses the mirror fog up when you take a shower using the word dewpoint?

When you take a hot shower, the mirror's surface temperature drops below the dew point of the surrounding air. This causes water vapor in the air to condense on the mirror's cooler surface, forming tiny water droplets that make it appear foggy. The mirror clears up when the mirror's surface temperature warms up and evaporates the water droplets.


How did thy make bifocals?

Benjamin Franklin cut one pair of far-seeing glasses and one pair of close-up-seeing glasses and put half-and-half of both pairs together.


Can you wear prescription glasses under ATV goggles?

yes i have done it for years but is t is cold they might fog up.


When was First pair of eye glasses?

The first pair of eyeglasses was invented in Italy around the year 1286 by an unknown person. These early glasses were made by placing glass or crystal lenses into frames that were held up to the eyes. This invention revolutionized vision correction and helped improve the quality of life for many people.


Why does the shower produce more steam than a bath?

In a bath there is less hot water vapour condensing into particles for you to see. Steam is made up of water vapour that you can't see. More fog is produced from a shower because cold air surrounding the hot water from the shower causes water vapour to change into small water droplets called fog not steam.