No. 167 EASY SCIENCE
Author: Maria Cristina Chaler. Series
Juguemos to why? Why
glasses fog up in winter?
In winter the glass in contact with the outside are cooled so that the water vapor is inside the room to make contact with them will condense, will change from gas to liquid, tarnished by the water droplets that form. If the glass temperature was below zero degrees Celsius (0 º C) will form frost, ie a thin layer of ice.
It's the same with a bottle that is removed from the refrigerator that make contact with the air of the room works as a coolant and is covered with drops of water, fogging, if instead of removing it from the refrigerator the retirásemos the frieze is a temperature below zero degrees, the bottle is escarcharía.
Juguemos to why? Why
glasses fog up in winter?
In winter the glass in contact with the outside are cooled so that the water vapor is inside the room to make contact with them will condense, will change from gas to liquid, tarnished by the water droplets that form. If the glass temperature was below zero degrees Celsius (0 º C) will form frost, ie a thin layer of ice.
It's the same with a bottle that is removed from the refrigerator that make contact with the air of the room works as a coolant and is covered with drops of water, fogging, if instead of removing it from the refrigerator the retirásemos the frieze is a temperature below zero degrees, the bottle is escarcharía.
And having answered that why it is worth recalling some useful concepts .
The air around us is composed of a gaseous solution v
Nitrogen (N2) in a
v 78.03% Oxygen (O2) v
20.99% Carbon Dioxide (CO2) 0.03% v
Inert Gases (Argon, Neon, Helium, Krypton, Xenon)
v 0.941686% Hydrogen (H2) 0.01% v
Methane (CH4) v
0.0002% of nitrogen oxide (N2O)
v 0.00005% Water (H2O) particles Ozone (O3) in amounts that vary depending on weather conditions.
The amount of water contained in the atmosphere from evaporation seas, rivers, oceans and the issuance of biomes (evapotranspiration). This water is called the moisture and the percentage varies according to the local climate will of course directly related to the geographical point on the planet.
When the moisture content expressed as the amount of vapor in grams per volume in cubic meters (m3) of air at a given pressure and temperature, we mean the absolute humidity (Ha).
We are accustomed to hearing the phrase relative humidity (RH) when we announce the weather, this is a value given by the ratio of absolute humidity at a certain pressure and temperature and the maximum amount of vapor (humidity saturation) to admit that mass of air under such conditions of pressure and temperature. It is usually expressed as a percentage so that it multiplies that ratio by 100. This measure gives us a fairly finished moisture content in the air that surrounds us but is variable as it depends on the current temperature.
The instrument used to measure the relative humidity is called a hygrometer.
The poetic dew The dew point is the temperature at which condensation occurs water vapor, ie the passage of vapor to liquid. There is a fixed value as it depends on the relative humidity and temperature of the place.
The dew droplets can be seen on the surface of the leaves, flowers, in the fine strings of a web. It's a weather phenomenon that mobilizes poets beauty it creates.
Cundo the outside temperature is below 0 º C that dew will solidify and turn into frost, perhaps more beautiful and more inspiring
The air around us is composed of a gaseous solution v
Nitrogen (N2) in a
v 78.03% Oxygen (O2) v
20.99% Carbon Dioxide (CO2) 0.03% v
Inert Gases (Argon, Neon, Helium, Krypton, Xenon)
v 0.941686% Hydrogen (H2) 0.01% v
Methane (CH4) v
0.0002% of nitrogen oxide (N2O)
v 0.00005% Water (H2O) particles Ozone (O3) in amounts that vary depending on weather conditions.
The amount of water contained in the atmosphere from evaporation seas, rivers, oceans and the issuance of biomes (evapotranspiration). This water is called the moisture and the percentage varies according to the local climate will of course directly related to the geographical point on the planet.
When the moisture content expressed as the amount of vapor in grams per volume in cubic meters (m3) of air at a given pressure and temperature, we mean the absolute humidity (Ha).
We are accustomed to hearing the phrase relative humidity (RH) when we announce the weather, this is a value given by the ratio of absolute humidity at a certain pressure and temperature and the maximum amount of vapor (humidity saturation) to admit that mass of air under such conditions of pressure and temperature. It is usually expressed as a percentage so that it multiplies that ratio by 100. This measure gives us a fairly finished moisture content in the air that surrounds us but is variable as it depends on the current temperature.
The instrument used to measure the relative humidity is called a hygrometer.
The poetic dew The dew point is the temperature at which condensation occurs water vapor, ie the passage of vapor to liquid. There is a fixed value as it depends on the relative humidity and temperature of the place.
The dew droplets can be seen on the surface of the leaves, flowers, in the fine strings of a web. It's a weather phenomenon that mobilizes poets beauty it creates.
Cundo the outside temperature is below 0 º C that dew will solidify and turn into frost, perhaps more beautiful and more inspiring
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