Principal Quantity and Derivative Quantity
Principal
Quantities and Derivative Quantities and Their Units in (International Units)
This
time we will discuss the principal quantities and complete derivative
quantities and their units.
The
quantity itself is anything that can be measured, calculated and expressed in
numbers and has units.
While
the unit is something that is used to express the size of a quantity, or a
comparison in measuring a quantity.
The
quantities can be grouped into 2, namely:
✔Base Quantities
✔Derived Quantities
The
two quantities have different definitions, along with an explanation of the
principal quantities and derivative quantities:
✔Principal quantity
Base
quantities are quantities whose units have been predetermined, stand alone and
cannot be translated from other quantities. There are seven main quantities
that have been formulated and agreed upon by experts. Examples of derived
quantities are length, mass and time.
|
Magnitude Symbol |
Unit |
Unit Symbol |
Long |
l |
meter |
m |
Mass |
m |
kilogram |
kg |
Time |
t |
sekon |
s |
Electric current |
I |
ampere |
A |
Temperature |
T |
kelvin |
K |
Amount of substance |
n |
mol |
mol |
Light intensity |
l |
kandela |
cd |
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