Sohoz School

Unite

Scientists all over the world would like to work with a consistent system of unit. Following the conference General Des Poids et Mesures(CGPM) in 1968, agreement on international system of unit, SI was reached. That system used seven base unit. The seven base system are: Meter, Kilogram, Second, Ampere, Kelvin, Candela and Mole.  

Table of Base Unit

Physical Quantity                                   Name of Unit                                        Symble

1. Length                                                    Meter                                                 m

2. Mass                                                       Kilogram                                           kg

3. Time                                                       Second                                               s

4. Electric Current                                     Ampere                                               A

5. Temperature                                          Kelvin                                                 K

6. Luminous Intensity                               Candela                                               cd

7. Amount of Substance                            Mole                                                   mol

Definition Of Meter:

Meter is  defined as the length equal to 1650763.3 wavelength in vacuum corresponding to the transition the level 2p¹⁰ and 5d⁵ of the krypton-86 atom.

Definition Of Kilogram:

Kilogram is defined as mass equal to the mass of international prototype of kilogram.