Fluke Biomedical Index 2MF, User Manual

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Appendices
Glossary
H
H-3
heme
The non-protein, ferrous-iron-containing component of hemoglobin .
hemoglobin
The oxygen-bearing, iron-containing conjugated protein in vertebrate red blood cells,
consisting of about 6 per cent heme and 94 per cent globin .
Hertz (Hz)
A unit of frequency equal to one cycle per second. Used to measure electrical current and
light, especially ultraviolet radiation (as in fluorescent light).
infrared
Of, pertaining to, or being electromagnetic radiation having wavelengths greater than
those of visible light and shorter than those of microwaves .
kilogram
The fundamental unit of mass in the International System, about 2.2046 pounds.
LCD
Liquid crystal display; a digital display consisting of a liquid crystal material between
sheets of glass that becomes readable in the presence of an applied voltage.
meter
The fundamental unit of length, equivalent to 39.37 inches, in the metric system.
Originally defined in 1790 as one ten-millionth (107) of the earth's quadrant passing
through Paris, the meter was redefined in 1960 as the length equal to 1,650,763.73
wavelengths in a vacuum of the orange-red radiation of krypton 86.
meter-kilogram
A coherent system of units for mechanics in which the basic units of
second system
length, mass, and time are the meter, kilogram, and second.
microwave
An electromagnetic wave having a wavelength in the approximate range from one
millimeter to one meter, the region between infrared and short wave radio wavelengths.
nanometer
One-billionth (10
-9
) of a
meter
.
nanosecond
One billionth (109) of a second (one thousand-millionth of a second). Electricity travels
approximately one foot per nanosecond.
newton
In the meter-kilogram-second system, the unit of force required to accelerate a mass of
one kilogram one meter per second per second that is equal to 100,000 dynes. [After Sir
Isaac Newton (1642-1727).]