There are three systems of analog hygrometers : analog hygrometers with a metal spring, analog natural hair hygrometers, and analog synthetic hair hygrometers.
42.
The first crude hygrometer was invented by Leonardo da Vinci in 1480 and a more modern version was created by polymath Johann Heinrich Lambert in 1755.
43.
Klinkerfues also had an abiding interest in meteorology, developing a hygrometer, patented in 1877, that was later manufactured in G�ttingen by Wilhelm Lambrecht.
44.
I'm thinking that I can't simply rely on hygrometer readings because the air temperature also affects the capacity of air for water.
45.
Grand Duke Ferdinado was obsessed with new technology, and had a variety of hygrometers, barometers, thermometers, and telescopes installed in the Palazzo Pitti.
46.
He designed sensitive thermometers, hygrometers, hypsometers and calorimeters, and measured the specific heats of many substances and the coefficient of thermal expansion of gases.
47.
Just some of such instruments included chronometers, telescopes, sextants, microscopes, magnetic compasses, thermometers, hygrometers, barometers, electrometers, and eudiometers.
48.
His astronomical research focused on Mercury's mass and the Earth's magnetism, while his inventions included valve improvements for air pumps and a hygrometer.
49.
The hygrometer measures the dew point by directing a light beam from a small infrared diode to the surface of the mirror at an angle of 45 degrees.
50.
A Stevenson screen ( a vented box ) housed instruments such as a thermometer for measuring temperature, barometer for measuring barometric pressure and hygrometer for measuring humidity.
