On That Note: Here are the 7 BASE
UNITS
for nontechnical wizards.
meter
•
second
•
kilogram
• Kelvin
ampere
•
candela
•
mole
BASE
UNIT  meter (m)  LENGTH.
Up until 1983 the meter was defined as 1,650,763.73
wavelengths in a vacuum of the orangered line of the spectrum of
krypton86. And since then it is determined to be the distance traveled
by light in a vacuum in 1/299,792,45 of a second.
BASE
UNIT  second (s)  TIME
The second is defined as the duration of 9,192,631,770
cycles of the radiation associated with a specified transition of the
cesium133 atom.
BASE
UNIT  kilogram (kg)  MASS
The standard for the kilogram is a cylinder of
platinumiridium alloy kept by the International Bureau of Weights and
Measures in Paris.
A duplicate at the National Bureau of Standards
serves as the mass standard for the United States. The kilogram is the
only base unit defined by a physical object.
BASE
UNIT  Kelvin (K) and °Celsius (°C)
 TEMPERATURE
The Kelvin is defined as the fraction 1/273.16 of the
thermodynamic temperature of the triple point of water; that is, the
point at which water forms an interface of solid, liquid and vapor. This
is defined as 0.01 °C on the Celsius scale and 32.02 °F on the
Fahrenheit scale. The temperature zero K (Kelvin) is called
"absolute zero".
BASE
UNIT  ampere (A)  ELECTRIC
CURRENT
The ampere is defined as that current that, if maintained
in each of two long parallel wires separated by one meter in free space,
would produce a force between the two wires (due to their magnetic
fields) of 2 x 10^{7} N (Newton) for each meter of length. (a Newton is the unit of force
that when applied to one kilogram mass would
experience an acceleration of one meter per second, per second).
BASE
UNIT  candela (cd)  LUMINOUS
INTENSITY
The candela is defined as the luminous intensity of
1/600,000 of a square meter of a cavity at the temperature of freezing
platinum (2,042 K).
COMPLETE TEMPERATURE DETAILS VISIT
http://lamar.colostate.edu/~hillger/temps.htm
BASE
UNIT  mole  (mol) AMOUNT OF
SUBSTANCE
The mole is the amount of substance of a system that
contains as many elementary entities as there are atoms in 0.012
kilogram of carbon12.
