Diffraction is a phenomenon that occurs when a wave encounters an obstacle or passes through an opening and bends around it, spreading out in different directions.
Longer waves diffract more because they have a longer wavelength, which means they have a larger distance between each wave crest. This allows them to bend around obstacles more easily compared to shorter waves with a smaller wavelength.
The size of the obstacle does not affect diffraction, but rather the size of the opening or obstacle relative to the wavelength of the wave. If the opening or obstacle is similar in size to the wavelength, diffraction will be more significant.
Yes, diffraction can occur with any type of wave, including electromagnetic waves (such as light and radio waves), sound waves, and water waves.
Some real-life examples of diffraction include the bending of light around a corner, the spread of sound from a speaker, and the ripples in water caused by a rock being thrown into a pond.