diff --git a/docs/physics/classical-mechanics/newtonian-mechanics/newtonian-formalism.md b/docs/physics/classical-mechanics/newtonian-mechanics/newtonian-formalism.md
index cc4f3b7..1423b4f 100644
--- a/docs/physics/classical-mechanics/newtonian-mechanics/newtonian-formalism.md
+++ b/docs/physics/classical-mechanics/newtonian-mechanics/newtonian-formalism.md
@@ -26,7 +26,7 @@ Implying that there is no fundamental limit to the precision of measurements of
 
 From the definition of a reference system and postulates 1, 2 and 3 the Galilean transformations may be posed, which may be used to transform between the coordinates of two reference systems. 
 
-> *Principle 1*: let $(\mathbf{x},t) \in \mathbb{R}^4$ be a general point in spacetime. 
+> *Principle 1*: let $(\mathbf{x},t) \in \mathbb{R}^4$ be a general point in space and time. 
 > 
 > A uniform motion with velocity $\mathbf{v}$ is given by
 >