' Back to weather forecasting ' . A boy along with his father visits weather bureau and the chief of the bureau acquaints him with the importance and method of forecasting weather. Scientific instruments used to forecast weather. Weather bureau in Richmond, Virginia.
Scientific instruments used for weather forecast. Wind vane shows the direction of wind blow. An anemometer indicates speed of the wind.
Scientific instruments used for weather forecast. Thermometers used to record maximum and minimum temperatures. A man notes down the temperatures. Wet and dry bulbs of thermometers used to record humidity level.
Over cast sky. Conditions in upper atmosphere exert an influence on weather conditions.
A man fixes a balloon onto a machine. Balloon inflates as hydrogen fills into it. Balloon release to forecast weather conditions and study cloud formation. Man looks through telescope of theodolite and records observations. Airplane and big Army balloon used to study cloud formation.
Clouds in he sky. Explains the process of cloud formation in the atmosphere by evaporation and condensation. Importance of cloud formation on weather as a whole.
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