he weather glass is one of the oldest weather observation instruments.
Goethe busied himself with the study of air pressure using such a devise.
The position of the water in the glass tube reliably indicates all changes in air pressure.
he weather glass is one of the oldest weather observation instruments.
Goethe busied himself with the study of air pressure using such a devise.
The position of the water in the glass tube reliably indicates all changes in air pressure.
