Chapter 12, Waves, 12.5 Stationary and Progressive Waves

Progressive Wave - one wave that goes from one place to another 

Standing(stationary) Wave - when two progessive waves intefere

Stationary waves are formed when two progressive waves are superposed:

• equal frequency 
• nearly the same amplitude
• same speed
• travelling in opposite direction

How to create standing waves (model answer)

To create a standing wave, you must first have two progressive waves travelling in…