Add sound.md

sound.md

@@ -0,0 +1,30 @@
+# Sound
+• **Wave transfers energy not matter**
+The movement of the disturbance through a medium due to repeated periodic motion of particles about their mean positions is known as a wave.
+<table>
+<tr>
+<th>Types of Waves</th>
+</tr>
+<tr>
+     <td>
+     i. Mechanical Wave
+     <hr>
+     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.
+     </td>
+     <td>
+     ii. Electromagnetic Wave
+     <hr>
+     Electromagnetic waves are a 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.
+     </td>
+     <td>
+     iii. Matter Wave
+     In quantum mechanics, particles such as electrons and photons exhibit both wave-like and particle-like properties—a concept known as wave-particle duality. Matter waves refer to the wave aspect of this duality.
+     <caption>Matter Waves - Remark - Just as light can behave like both waves and individual particles, matter (ex. electrons) can also exhibit wave like behaviour under certain coditions. 
+     Physicist Louis de Broglie introduced the idea in 1924 that particles have their associated wavelengths.
+     </caption>
+     </td>
+</table>