Wait a second please....
Just a second..
These are the sentence which we use daily....
But the Question is "Do we know what is second?"
Something that has become a habit or that you can do easily
because u have done so many times.
But we dont know there meanings
Second : The second is the duration of 9192631770 periods of radiation corresponding to the
transition between the two hyperfine levels of the ground state of the
caesium-133 atom.
Click here : To know more about time.
Meter : It is unit of length. The meter is length of the path travelled by light in vacuum
during the time intervel of 1/299792458 of a second.
Click here : To know more about meter.
Kilogram: The kilogram is the unit of mass; it is equal to the mass of the international prototype
of the kilogram.
Click here: To know more about kilogram.
Ampere: The ampere is that constant current which, maintained if two straight parellel
conductors of infinite length, of negligible circular cross-section, and placed
meter apart in vacuume, would produce between these conductor a force equal
to 2 X 10 to the power -7 newton per meter of length.
Click here: To know more about Ampere.
Kelvin: The Kelvin, unit of thermodynamic temperature,is the fraction 1/273.16 of the
thermodynamic temperature of the triple point of water.
All topic discussed above were Units of measurement System.
Click here: to know more on Units_of_measurement.
