Thursday, September 1, 2011

Fog

August is the month of beautiful fogs in Latvia. Nearly every morning, we could see it out of our window. Sometimes, it was really thick!

We searched the Internet to see, what fog actually is. It turned out that fog is water droplets that have condensed from the air. The same as clouds! When air has been warm and humid during the day, evaporated water molecules are spread thoughout it. Then, when the temperature drops, the cooling air causes the water molecules to turn from a vapour (a gas) into liquid droplets. These droplets are so small they can hang in the air. But they are heavy enough to lie low near the ground. Sometimes they attach to the grass forming dew.

In August, our Vecmamma takes special care of her tomatoes in the greenhouse - even though the nights are warm, she has to make sure that the doors of the greenhouse are always shut. If the fog manages to come into the greenhouse and settle on the unripe tomatoes, then they will not get ripe any more - without turning red, they will turn black and start decaying instead.

These pictures of fog we took from our balcony early in the morning.

No comments:

Post a Comment