Encara no tenim significats per a "rarefy the air".
1But as such means are not at disposal, it becomes necessary to place the terminal in a bulb and rarefy the air in the same.
2The girl felt light-headed and giddy as though the rush above had rarefied the air under the cliffs.
3Simply this: The hot wire rarefied the air in contact with it, but it did not equally lighten the floating matter.
4For example, I know that the heat of the sun during the day rarefies the air over the land, and so causes the wind.
5The first will represent the ocean, and the latter an island made hot by the rays of the sun, and rarefying the air above it.
6This signifies that the comet, breathing fire and smoke, so rarefied the air that the clouds disappeared and there followed an age of awful heat.