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A psychrometer consists of two thermometers, one which is dry and one which is kept moist with distilled water on a sock or wick. The two thermometers are thus called the dry-bulb and the wet-bulb. Relative humidity is computed from the ambient temperature as shown by the dry-bulb thermometer and the difference in temperatures as shown by the wet-bulb and dry-bulb thermometers. The sling psychrometer, where the thermometers are attached to a handle or length of rope and spun around in the air for a few minutes, is sometimes used for field measurements, but is being replaced by more convenient electronic sensors.
What is the phenomenon of the bending of light as it passes from one medium to another called?
Which phenomenon does a hologram use to create an image?
The term ‘Isoneph' indicates the lines of equal –
If the distance between two consecutive crests is L, then the wavelength is given by______.
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A horse cannot pull a cart on a frictionless surface because:
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