Here's the general principle:
* Waves diffract more when the wavelength is larger relative to the size of the obstacle.
Here's why:
Diffraction is the bending of waves around obstacles. When a wave encounters an obstacle, it can bend around it and spread out. This bending is more pronounced when the wavelength of the wave is comparable to or larger than the size of the obstacle.
Examples:
* Sound waves: Sound waves have relatively long wavelengths (a few centimeters to meters). They can diffract around objects like furniture, so you can hear someone talking even if they are behind a wall.
* Light waves: Light waves have much shorter wavelengths (a few hundred nanometers). They diffract around objects like a pinhole, creating a pattern of light and dark bands.
* Water waves: Water waves can diffract around obstacles like piers or rocks. The amount of diffraction depends on the size of the wave and the size of the obstacle.
Conclusion:
In general, waves with longer wavelengths will diffract more when encountering an obstacle. So, among waves of different wavelengths, the one with the longest wavelength will diffract the most.