There's no phenomenon where increasing frequency causes diffraction to increase. In fact, the opposite is true.

Here's why:

* Diffraction is the bending of waves around obstacles or through openings.

* Frequency is related to the wavelength of a wave (higher frequency = shorter wavelength).

* The amount of diffraction is inversely proportional to the wavelength. This means:

* Shorter wavelengths (higher frequency) diffract less.

* Longer wavelengths (lower frequency) diffract more.

Think of it this way:

Imagine throwing a ball through a small gap. A small ball will have a harder time going through the gap than a larger ball. Similarly, a wave with a short wavelength (high frequency) will have a harder time bending around an obstacle than a wave with a long wavelength (low frequency).

Examples:

* Light waves: Blue light has a higher frequency (shorter wavelength) than red light, so it diffracts less.

* Sound waves: High-pitched sounds (high frequency) diffract less than low-pitched sounds (low frequency).

Let me know if you have any other questions!