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Wednesday, January 19, 2011
PHY101 - Physics GDB Last 20012011
"At the moment in Pakistan atmosphere is very chill. On one of such a chilly morning you can “see your breath”. Can you really? What are you actually seeing? Does this phenomenon depend on the temperature of the air, the humidity, or both? Explain.”
When it is cold outside and you are warm inside and your breath comes out you can see it hit the cold air outside.Like when you open a freezer door at a grocery store and the cold hits the warm air--you can see it.Same difference.
You don't see your breath but rather the water vapor in your breath. This water vapor condenses into a liquid state when it comes into contact with the colder surrounding air. This depends on both temperature and humidity. If the humidity in the air for that given temperature is high enough, then the air will be unable to accept any more water vapor, so the water vapor in your breath will change into liquid form. On the other hand, if the temperature of the air for a given humidity is too high, then the water vapor will not lose sufficient heat to change into liquid form.
When it is cold outside and you are warm inside and your breath comes out you can see it hit the cold air outside.Like when you open a freezer door at a grocery store and the cold hits the warm air--you can see it.Same difference.
ReplyDeleteYou don't see your breath but rather the water vapor in your breath. This water vapor
ReplyDeletecondenses into a liquid state when it comes into contact with the colder surrounding air.
This depends on both temperature and humidity. If the humidity in the air for that given
temperature is high enough, then the air will be unable to accept any more water vapor, so
the water vapor in your breath will change into liquid form. On the other hand, if the
temperature of the air for a given humidity is too high, then the water vapor will not lose
sufficient heat to change into liquid form.