The water content of moist air can be measured with no less than six different metrics: Wet Bulb Temperature, Relative Humidity, Absolute Humidity, Degree of Saturation, Humidity Ratio (also known as Mixing Ratio), and Specific Humidity.
You can use a sextant to determine the position (called the âshootâ) in the sky of the sun, moon, or other celestial body, as well as your longitude. Although its design looks complicated, with an understanding of how it works and practice, you can reliably use it to find your position. Ad.
The pressure that the cornea pushes back onto the tonometer is measured in millimeters of mercury, giving your eye doctor a number to record and compare to from year to year. Non-contact tonometry. Non-contact tonometry (NCT) is commonly referred to as the air puff test. Many people prefer this type of tonometry because it does not involve touching the eye. Instead, a gentle puff of air is used to flatten the cornea.