The SI unit of length or distance is the meter, along with all of its
'power-of-ten' multiples and sub-multiples.
The 'nanometer' is one of those. It's 1x 10^-9 (one billionth of a) meter.
So 206 nanometers is already expressed in totally fine SI units.
It's impossible. Nanometers are units of distance and Joules are units of energy.
There are 0.00000000224 meters in 2.24 nm or nanometers. In Si units, one nanometer is equivalent to 1.0 x 10E-9 meters.
nanometers
The answer depends on what is measured to 206, and the units used for 206.
A unification. If 10 scientists across the world would communicate and one was describing distance in nanometers and another one in kilometers, it would be chaotic. Instead, they all talk about distance in meters.
In SI units, that would be the Newton.In SI units, that would be the Newton.In SI units, that would be the Newton.In SI units, that would be the Newton.
SI and metric are the same units.
International System of Units (SI)
The principal SI units used to derive all other SI units are the base SI units. These are the units for physical quantities such as length, time, mass, electric current, temperature, amount of substance, and luminous intensity.
most of the world does SI so more people can understand with it in SI units
most of the world does SI so more people can understand with it in SI units
SI units are more accurate than English system units