1. Reflection:
* The most prominent phenomenon is reflection. Light bounces off the surface of the particle.
* The angle of incidence (the angle at which the light hits the particle) equals the angle of reflection.
* This is why we see objects: light reflects off their surfaces and enters our eyes.
2. Refraction:
* If the particle is transparent, some light can pass through it, but its path is bent or refracted.
* The amount of bending depends on the difference in the refractive index between the particle and the surrounding medium.
* This is why a straw appears bent when submerged in water.
3. Scattering:
* Light can be scattered in various directions when it encounters a large particle.
* Scattering occurs due to irregularities on the surface of the particle or variations in its density.
* Diffuse scattering happens when light is scattered in all directions, making the object appear dull.
* Specular scattering happens when light is reflected in a particular direction, giving the object a shiny appearance.
4. Absorption:
* Some light can be absorbed by the particle, meaning its energy is converted into other forms, such as heat.
* The amount of absorption depends on the particle's material and the wavelength of the light.
* This is why dark objects absorb more light and get hotter than light objects.
5. Diffraction:
* Even though the particle is larger than the wavelength, some diffraction can still occur at the edges of the particle.
* This means that the light waves spread out slightly as they pass by the particle.
* Diffraction effects are usually less pronounced with larger particles compared to particles closer in size to the wavelength of light.
In summary:
* Reflection is the dominant phenomenon when light strikes particles larger than its wavelength.
* Refraction and scattering can also occur depending on the particle's material and shape.
* Absorption and diffraction play a lesser role but can still contribute to the overall interaction of light with the particle.
The exact nature of the interaction depends on the specific properties of the light, the particle, and the surrounding medium.
