diff --git a/sound.md b/sound.md
index d41f641..4434d2f 100644
--- a/sound.md
+++ b/sound.md
@@ -9,14 +9,14 @@ The movement of the disturbance through a medium due to repeated periodic motion
i. Mechanical Wave
- MECHANICAL WAVE - *Periodic* disturbance which *requires material medium* (i.e. solid, liquid or gas) *for its propagation*.
+ Mechanical Wave - *Periodic* disturbance which *requires material medium* (i.e. solid, liquid or gas) *for its propagation*.
These waves are characterized by the motion of the particles of a medium.
These waves have well defined characteristics.
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ii. Electromagnetic Wave
- Electromagnetic waves are a type of wave that can travel through the vacuum of space
+ Type of wave that can travel through the vacuum of space
i.e they *don't require a material medium for propagation*.
They are created by the *vibration of electric charges* and consist of *oscillating electric and magnetic fields* that are *perpendicular* to each other and to the direction of the wave's travel.
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