we know the lagrangian l=ke-pe right
in case of fields is called "lagrangian density"
let particle with mass "m" and position "x"
it kientic energy= 1/2(mv^2)
so lagrangian =1/2(mv^2)-v(x) , v(x)=potential energy
in case the field lagrangian density
how can i determine the lagragian...
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hi
i know that day is rotation of Earth about it axis
and year is rotation of Earth about the sun , the time connected with rotation
my question is when remove the rotation we don t get the time?
so don t be found the time?