A covalent bond between the amine end of one amino acid and the acid end of another amino acid. PICTURE. peptides Short chains of amino acids. ~ /PEP-tide/ A covalent bond between two amino acids; forms when the amino group of one amino acid bonds to the carboxyl group of another and water is eliminated.
Home > Shopping Tools > Weather Station Glossary of Terms > wind vane (definition) A wind vane is a device that measures the direction of the wind. The wind vane is usually combined with the anemometer. Wind direction is the direction from which the wind is blowing.
How Does It Work. When wind hits the weather vane, it pushes on the larger surface. In this case, the larger surface is the end of the straw with the index card glued into the slit. As a result of this pushing effect on the index card, the other end of the straw will point into the oncoming wind.