What Is Air

Year Published: 1970

Creator: British Broadcasting Corp TV

Format: 16mm

Sound: sound

Description: Examines the composition of air, showing how at minus 196 degrees centigrade, air is a liquid and its ingredients can be separated. Explains that the two gases most important for breathing are oxygen and carbon dioxide, and analyzes what proportion of inhaled oxygen is absorbed by the lungs and what proportion of exhaled air is carbon dioxide.

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