International System of Units The fluorinefluorine bond of the difluorine molecule is relatively weak when compared to the bonds of heavier dihalogen molecules.
The myriametre (10,000 metres) is a deprecated unit name; the prefix myria- is obsolete, not included among the prefixes when the International System of Units was introduced in 1960.
In 1967, a specific frequency from the emission spectrum of caesium-133 was chosen to be used in the definition of the second by the International System of Units.
All temperature scales, including the modern thermodynamic temperature scale used in the International System of Units, are calibrated according to thermal properties of a particular substance or device.
The first table lists the base quantities used in the International System of Units to define the physical dimension of physical quantities for dimensional analysis.
In the International System of Units, the position of the moving object is measured in meters relative to the origin, while the time is measured in seconds.