(1) . What is photosynthesis?
Photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize foods, such as glucose, from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a by-product.
(2) . What is Respiration?
Respiration is the process by which living organisms convert fuel molecules, such as glucose, into energy, in the form of ATP, that is used to power the organism's metabolism. The process can occur aerobically, using oxygen, or anaerobically, in the absence of oxygen. Aerobic respiration is the process that occurs in the presence of oxygen and produces carbon dioxide and water as by-products
(3) . What is Refraction?
Refraction is the bending of light as it passes through a medium with a different refractive index. The refractive index of a medium is a measure of how much the speed of light is reduced as it passes through that medium. When light travels from one medium to another with a different refractive index, the light is bent at the boundary between the two media. This phenomenon is used in many optical devices, such as lenses and prisms, to control the direction and focus of light.
Reflection is the bouncing back of light, sound, or any other kind of energy wave, when it hits a surface that is not fully transparent. The angle at which the light hits the surface, and the angle at which it is reflected, are equal but opposite. Reflection can be classified as regular or diffuse, depending on the surface. Regular reflection, also known as specular reflection, occurs when the surface is smooth and polished, and the reflected light is concentrated in a single direction. Diffuse reflection occurs when the surface is rough, and the reflected light is scattered in many directions.
(5) . What is the Phenomenon Of Scattering Of Light ?
Scattering of light is the phenomenon in which light is redirected in many directions upon encountering small particles or tiny obstacles in a medium through which it is traveling. The small particles or obstacles cause the light to change direction, resulting in the scattering of light. Scattering is categorized as either elastic or inelastic. Elastic scattering is when the scattered light has the same energy and wavelength as the incident light, such as Rayleigh scattering which occurs when light scatters off of small particles such as air molecules. Inelastic scattering is when the scattered light has a different energy and wavelength than the incident light, such as Raman scattering or Mie scattering
