SI Unit

The standard units for physics is the International Standard of Units

The system is built on 7 base units defined using the fundamental constants c, h, and the vibration of a Caesium-133 atom

Symbol	Name	Quantity	Definition
s	second	time	$Δ 𝑣 C 𝑠$
m	meter	distance	$𝑐 Δ 𝑣 C 𝑠$
kg	kilogram	mass	$(1.475 \times 1040) ⁠ ℎ Δ 𝑣 C 𝑠 𝑐 2 ⁠$
A	ampere	current	$1.6021 \times 1019$
K	kelvin	temperature	$1.3806 \times 10 - 23$
mol	mole	amount	$6.022 \times 1023$
cd	candela	brightness	$540 \times 1012$