What's the difference between hydrometer and hydrometry?
Hydrometer
Definition:
(n.) An instrument for determining the specific gravities of liquids, and thence the strength spirituous liquors, saline solutions, etc.
(n.) An instrument, variously constructed, used for measuring the velocity or discharge of water, as in rivers, from reservoirs, etc., and called by various specific names according to its construction or use, as tachometer, rheometer, hydrometer, pendulum, etc.; a current gauge.
Example Sentences:
(1) The following noninvasive measuring methods were used for evaluation of the skin before and after exposure to irritants: measurement of transepidermal water loss by an evaporimeter, measurement of electrical conductance by a hydrometer, measurement of skin blood flow by laser Doppler flowmetry, measurement of skin colour by a colorimeter and measurement of skin thickness by ultrasound A-scan.
(2) The concentration of solids (or water) in urine can be measured by weighing, hydrometer, refractometry, surface tension, osmolality, a reagent strip, or oscillations of a capillary tube.
(3) the Skicon-100 and Corneometer CM 420 hydrometers and the Servo Med EPI evaporimeter.
(4) In an attempt to analyze the "texture match" of grafted skin, functional and morphological aspects of the stratum corneum were studied using the Skin Surface Hydrometer (IBS Inc.) and the scanning electron microscope.
(5) In conclusion, both hydrometers were deemed relevant and valid for assessment of skin moisture.
(6) Specific gravity of the colostrum was measured using a hydrometer in increments of 5 degrees C from 0 to 40 degrees C. Specific gravity explained 76% of the variation in colostral total IgG at a colostrum temperature of 20 degrees C. The regression model was improved only slightly with the addition of protein, fat, and total solids.
Hydrometry
Definition:
(n.) The art of determining the specific gravity of liquids, and thence the strength of spirituous liquors, saline solutions, etc.
(n.) The art or operation of measuring the velocity or discharge of running water, as in rivers, etc.
Example Sentences:
(1) In a children's Hospital, one-third of urine specimens will be of insufficient volume for standard hydrometry.
(2) Highly significant correlations were achieved between the TOBEC Phase value and fat-free mass (FFM) determined by densitometry (FFMd) and hydrometry (FFMdw) with values ranging from 0.713 to 0.981.
(3) The volume of 41 samples was inadequate for hydrometry.
(4) Body composition was predicted for 114 middle-aged and elderly individuals aged 35-90 y by using total-body electrical conductivity (TOBEC), densitometry, and hydrometry.
(5) Body composition measures included densitometry, hydrometry, bone mineral density of the one-third distal radius, and TOBEC.
(6) Fat-free mass (FFM) was calculated by using one-, two-, and three-compartment models: densitometry, FFMd; densitometry and hydrometry, FFMdw; and densitometry, hydrometry, and bone mineral density, FFMdwb.
(7) In urines not containing dissolved macromolecules, hydrometry, refractometry and osmolality reliably reflect the degree of concentration.
(8) Twelve moderately overweight women were confined to a metabolic unit for a period of 8 wk, 2-wk baseline and 6-wk reduction periods, during which changes in body composition were assessed by densitometry and hydrometry.