While it is true that matter particles can exhibit wave-like behavior, such as electrons or atoms, the concept of "dangerousness" is not directly related to the wave properties of matter. The potential dangers associated with waves, including electromagnetic waves like X-rays or gamma rays, are primarily based on their energy and how they interact with living organisms.
Electromagnetic waves with shorter wavelengths, such as X-rays, gamma rays, or ultraviolet (UV) radiation, carry higher energy per photon. When these waves interact with biological tissues, they can cause ionization and damage to cells and DNA. This is why prolonged or intense exposure to these types of waves can be hazardous to living organisms.
On the other hand, matter waves, such as the de Broglie waves associated with particles, have very short wavelengths, often on the atomic or subatomic scale. However, the energies associated with matter waves are typically much lower compared to electromagnetic waves of similar wavelengths. Consequently, the interaction between matter waves and living organisms is negligible, and they do not pose any significant danger.
It's important to note that the "dangerousness" of any wave or particle is context-dependent and determined by factors such as energy, intensity, duration of exposure, and the sensitivity of the organism or material being affected. While matter waves have wave-like properties, they do not possess the same energy levels as high-energy electromagnetic waves, and thus they are not considered dangerous in the same sense.