The sum of the pulses allows us to find that the answer for the sum at a point x is
- There is no interference pattern as the amplitude does not remain constant.
Traveling waves can add up as they travel, leading to different results.
- If the waves travel in the same direction, their sum gives resulting waves that can be maximum or minimum depending on the phase between them, un stationary patterns.
- If the directions are coincident direction, they add the place to the interference processes, in this case stationary patterns are formed on a screen.
- If the waves travel in the opposite direction the sum of the two waves gives rise to a wave that is maximum is the sum of the amplitudes of the two pulses
In the case of a pulse that corresponds to a single wavelength, the result is an instantaneous maximum, which after the pulse passes, returns to zero.
Consequently there is no stationary pattern, so there is no interference between the two pulses.
In conclusion with the sum of the pulses we can find that the answer is
- No interference pattern is produced as the amplitude does not remain constant.
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