1. Refraction of light
The refraction of light refers to the phenomenon that light changes its propagation direction when it enters another medium from one medium. When light enters the leaves from the air, the light is refracted at the interface because of the different refractive indexes of the two media. Refraction changes the direction of light and produces dispersion effect.
2. Light scattering
Light scattering refers to the phenomenon that light loses its original propagation direction when it meets tiny particles or irregular surfaces. There are many tiny bumps or particles on the surface and inside of leaves, and these tiny structures will lead to the scattering of light in the process of propagation. Scattering causes light to be emitted in all directions, forming a light spot.
3. Color and shape
The color of the light spot mainly depends on the refraction and scattering effects of light. Because the refractive index of light with different wavelengths is different in the medium, the distribution of rainbow color will appear in the spot. In addition, the fine structure on the leaves will make the spot have a certain shape, such as circle, ellipse or radial.
4. Forming conditions of facula
The formation of light spots needs to meet the following conditions: first, there needs to be a light source, such as sunlight; Secondly, there needs to be shelter, such as leaves or other light-transmitting objects; Finally, the light needs to pass through the gap or aperture of the barrier to refract and scatter the light.
5. Application and ornamental value
The formation of light spots provides us with a beautiful natural landscape. In forests, parks or gardens, the light spots formed by sunlight passing through leaves are often used for appreciation and shooting. In addition, in artistic creation, the formation of light spots is also a common composition element, which can increase the layering and artistic expression of works.
Summary:
The light spot formed by sunlight passing through the gap of leaves is the result of refraction and scattering of light. When the light passes through the blade, it refracts and scatters on the tiny structure on the surface and inside of the blade, forming a bright spot of rainbow color distribution. This phenomenon not only has a scientific explanation, but also brings people beautiful natural scenery and inspiration for artistic creation.