FLIR identiFINDER R300, User Manual

Page: 288 / 304

D. Glossary FLIR Detection
Units of Time
The
Ú
SI base unit for time is the second. It may be pre ixed with the usual SI
Ú
Unit Pre ixes
to express smaller or larger quantities.
Units known from everyday life (Table 5 , p. 288 ) are often used for larger quantities.
Table 5.
Units of time
Unit Symbol Relation
Second sec, s
Minute min, m 60 sec
Hour h 60 min
Day d 24 h
Year a 365.25 d
The Year is often pre ixed (see Table 4 , p. 287 ) to express very large quantities like 1.3 Ga for
1.3 billion years (the
Ú
Half Life of
40
K).
Universal Serial Bus
Ú
USB
URI
Ú
Uniform Resource Identi ier
USB (Universal Serial Bus)
A speci ication to establish communication between various types of devices and a host con-
troller, usually a personal computer.
UTC
Ú
Coordinated Universal Time
Weapons-Grade Plutonium (WGPu)
A mixture of
239
Pu,
240
Pu and other
Ú
Isotopes , which contains less than 7 %
240
Pu. Due to its
reduced amount of the spontaneous ission source
240
Pu, the risk of a premature chain reac-
tion start is decreased so that this blend of Plutonium is used for the weapon head assemblies.
Further grades are
Ú
Fuel-Grade Plutonium and
Ú
Reactor-Grade Plutonium .
WGPu
Ú
Weapons-Grade Plutonium
WGS84
Ú
World Geodetic System
World Geodetic System (WGS84)
A standard for use in cartography, geodesy, and navigation comprising a coordinate system
for the Earth, a reference surface for raw altitude data, and a geoid de ining the nominal sea
level.
The WGS release of 1984 with later revisions is used by
Ú
Global Positioning System .
288 identiFINDER
®
R300/en/2014.4(13623)/Feb2015