Who Invented The Wet And Dry Bulb Thermometer? The Dry and Wet Bulb Psychrometer is said to have been invented by Sir John Leslie of Britain. He used a two part system to measure absolute humidity. Two mercury thermometers are used, a dry thermometer measuring the ambient temperature and one submerged in water to measure
How Accurate Is A Digital Hygrometer? Digital hygrometers are more precise than analog hygrometers but still most are accurate + or – 5 points. They are calibrated in the factory. We recommend that you check the calibration of your digital hygrometer using the salt method so that you know exactly the margin of error of
What Instrument Is Used To Measure Sky Conditions? A ceilometer is a device that uses a laser or other light source to determine the height of a cloud ceiling or a cloud base from the ground. Ceilometers can also be used to measure the aerosol concentration within the atmosphere. What instrument measures sky conditions? A
What Does It Mean If Hydrometer Sinks? What does it mean if hydrometer sinks? If a fluid is less dense, the hydrometer will need to displace more fluid to reach the balancing point between upward and downward force, so it sinks deeper into the fluid. If the fluid is more dense, such as the salt-water