diff --git a/education/physics/PHYS2220/Magnetism.md b/education/physics/PHYS2220/Magnetism.md
index 13b0075..79e1c99 100644
--- a/education/physics/PHYS2220/Magnetism.md
+++ b/education/physics/PHYS2220/Magnetism.md
@@ -12,4 +12,5 @@ For the magnitude of a magnetic force:
 	$$ |\vec(F_B)| = |q|vB\sin(\theta) $$
 For the radius of a particle's circular path:
 $$ r = \frac{mv}{qB} $$For the period of a particle's circular orbit in a uniform magnetic field:
-$$ 
\ No newline at end of file
+$$ T = \frac{2\pi r}{v} = \frac{2\pi}{v}\frac{mv}{qB} = \frac{2\pi m}{qB} $$
+- The period is independent of the particle's speed and orbital radius.
\ No newline at end of file