Physics

General objective of this lecture is to present on Digital Barometer. It is a tutorial study based lecture. A digital barometer measures air pressure. It is used…

Air Pressure is the force exerted on you by the weight of tiny particles of air (air molecules). Although air molecules are invisible, they still…

A Weather Satelliteis able to photograph, track, and measure the conditions of large-scale air movements. A meteorologist then compiles and analyzes the data with the help…

Basic objective of this lecture is to present on Weather Balloon. A Weather Balloon measures weather conditions higher in the atmosphere. Measures temperature, air pressure, wind speed and…

General objective of this lecture is to present on Rain Gauge. A Rain Gauge is used to measure amount of rainfall. An official Rain Gauge consists of…

A Wind Vane is used to measure wind direction.  It spins on a rod and points in the direction from which the wind comes. The wind…

A Hygrometer is an instrument used to measure the humidity of the air. A mechanical Hygrometer uses human or horse hairs which stretch as they absorb…

A Windsockis used at airports to indicate wind direction for takeoffs and landings. They help the pilots select the proper runway so that they can take…

This lecture introduce on Anemometer. An Anemometer measures wind speed. The cups catch the wind, turning a dial attached to the instrument. The dial shows the wind speed.…

A Psychrometer measures relative humidity. Two thermometers are used in a Psychrometer. A wet cloth covers the end of one of the thermometers. Water evaporates from…

Principle objective of this lecture is to present on Barometers. A Barometer measures air pressure. An Italian scientist named Torricelli built the first barometer in 1643. People still…

Major objective of this lecture is to present on Thermometers. A Thermometermeasures air temperature. A Thermometer works because matter expands when heated. Most thermometers are closed glass tubes…