A character in physics is usually used for many different things in many different areas of physics, and indeed science. They are only really useful to convey information if people first agree on its meaning. Usually it is quite clear however if a particular use is quite common in the field you might be working in.
As an example, g might represent the gravitational acceleration on a planet in mechanics or something like the coupling strength of a gauge force in quantum field theory.
War symbol
It means diminshed, so G followed by a degree symbol means play a G diminshed chord.
In a rust equation, the symbol "s" typically represents the solid iron that is rusting, while "g" represents the gaseous oxygen in the air that is reacting with the iron to form rust.
The chemical symbol for gold is Au
g
g
g
The symbol for gold is AU because it comes from its Latin name, Aurum. The symbol "G" is already used for the element germanium.
no element has the symbol G
The symbol for acceleration due to gravity is "g."
g
The symbol for Genpact Limited in the NYSE is: G.