On That Note: Here are the 7 BASE
for non-technical wizards.
UNIT - meter (m) - LENGTH.
Up until 1983 the meter was defined as 1,650,763.73
wavelengths in a vacuum of the orange-red line of the spectrum of
krypton-86. And since then it is determined to be the distance traveled
by light in a vacuum in 1/299,792,45 of a second.
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
UNIT - kilogram (kg) - MASS
The standard for the kilogram is a cylinder of
platinum-iridium 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.
UNIT - Kelvin (K) and °Celsius (°C)
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
UNIT - ampere (A) - ELECTRIC
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).
UNIT - candela (cd) - LUMINOUS
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
UNIT - mole - (mol) AMOUNT OF
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 carbon-12.