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.
Wind has both speed and direction. Anemometers measure wind speed and wind vanes measure wind direction. A typical wind vane has a pointer in front and fins in back. When the wind is blowing, the wind vane points into the wind. For example, in a north wind, the wind vane points northward. A cup anemometer is a common tool to measure wind speed. The cups catch the wind and produce pressure difference inside and outside the cup. The pressure difference, along with the force of the wind, causes the cups to rotate.