What is the result of constructive interference between two waves?

When two waves undergo constructive interference, they align in such a way that their crests and troughs coincide. This alignment allows their amplitudes to combine, resulting in an amplitude that is greater than that of either of the individual waves. Essentially, the energy from both waves adds together, thus producing a wave with a higher overall amplitude.

This phenomenon is most notably observed in situations such as sound waves, light waves, or water waves where sources are in phase. The increased amplitude means that the resulting wave is more intense—this could be seen as a louder sound in the case of sound waves or a brighter light in the case of light waves. The reinforcement of wave patterns during constructive interference is a fundamental principle in wave physics, highlighting the way multiple wave sources can interact to create a stronger resultant wave.