meter-, metro-, metr-, -metrical, -metrically, -metron, -metric, -metrist, -meter, -meters, -metry, -metre
2. Determination of the specific gravity of a fluid by means of a hydrometer.
2. Determining the concentration of cations; such as, calcium and magnesium in water.
2. An instrument used to measure and to record rainfall.
2. Any of several instruments that measure atmospheric humidity.
The most common type of hygrometer consists of two, side-by-side mercury or electronic thermometers, one of which has a dry bulb, and one of which has a bulb wrapped with a wet cotton or linen wick.
As water evaporates from the wet bulb, it absorbs heat from the thermometer, driving down its temperature reading.
The difference in temperature between the two thermometers is then used to calculate the relative humidity.
Other hygrometers make use of the temperatures at which dew forms and disappears to calculate the relative humidity.
2. Readily absorbing and retaining moisture; such as, hygrometric substances including potash.
2. Referring to absorbing and retaining moisture; such as, hygrometric substances including potash.
2. That branch of physics which relates to the determination of the humidity of bodies, particularly of the humidity of air and gases in the atmosphere, with the theory and use of the instruments constructed for this purpose.
It results from the eyeballs being too short from front to back, causing images to be focused behind the retinas. Also known as "farsightedness".