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hygrometer used to measure density of relative humidity in air by using a sensory element such as a hair
A hair hygrometer.
Who invented the first hygrometer?
Because a human hair is used as a type of 'spring' in the device, which expands or contracts according to the moisture present and this moves the indicator needle, thus providing a measurement of the atmospheric humidity.
A hygrometer is important because it shows the humidity of the atmosphere. For a hygrometer to work though it has to placed outside.
Are you talking about billiards?
hygrometer used to measure density of relative humidity in air by using a sensory element such as a hair
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humidity
Yes , wool yarn can be substituted for the human air in a hygrometer.
In the 15th century Leanardo da Vinci built the very fist hygrometer. Francesco Folli invented a more practical hygrometer in 1664. In 1783 Horace Benedict de Sausser built the first hair hygrometer. John Frederic Daniell invented a dew-point hygrometer in 1820. Hair hygrometers weren't in regular use until the 1960s.
In the 15th century Leanardo da Vinci built the very fist hygrometer. Francesco Folli invented a more practical hygrometer in 1664. In 1783 Horace Benedict de Sausser built the first hair hygrometer. John Frederic Daniell invented a dew-point hygrometer in 1820. Hair hygrometers weren't in regular use until the 1960s.
Straight human hair is used in a hair hygrometer. Its length depends upon the relative humidity. First drawn by Leonardo da Vinci about 1450.
A hair hygrometer.
Humidity of AIR.It is called a Hygrometer
hygrometer psychrometer
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