Both phenomena
occur and overlap
. The main factor controlling them is particle size: scattering occurs for particles smaller than the wavelength of light, and reflection for bigger ones, but there is overlap. For reflection (and transmission) the absorptivity (Beer Lambert Bouguer law) is also important.
What is the difference between specular reflection and diffuse scattering?
Reflection from a smooth, flat surface is called specular reflection . This is the type of reflection that happens with a flat mirror. If a surface is rough, diffuse reflection
What is the difference between the reflection of light and scattering of light?
Scattering happens upon
total absorption and emission of
a particle or a photon, whereas in reflection the incident particle or wave only bounces off from a surface. The wavelength of the incident wave can change after scattering, but it cannot change after reflection.
What is the difference between reflection and radiation?
is that
radiation is the shooting forth of anything from a point or surface
, like the diverging rays of light; as, the radiation of heat while reflection is the act of reflecting or the state of being reflected.
What is the difference between reflectance and transmittance?
Reflectance measures the amount of light that reflects from the surface of a sample. Transmittance is the amount of light transmitted by a sample and is mathematically related to
absorbance
.
What are the three types of scattering?
There are three different types of scattering:
Rayleigh scattering
Which light scatters most?
Blue light
is scattered more than other colors because it travels as shorter, smaller waves. This is why we see a blue sky most of the time.
What is the incident ray?
An incident ray is
a ray of light that strikes a surface
. The angle between this ray and the perpendicular or normal to the surface is the angle of incidence. The reflected ray corresponding to a given incident ray, is the ray that represents the light reflected by the surface.
What does R stand for in the law of reflection?
equal, or. i = r. This is the
law of specular reflection
, from the Latin word “speculum”, meaning mirror. The law of specular reflection is valid for any value of the angle of incidence i, not only for the 45° angle reported in the diagram.
Why can you see your own reflection in a calm lake but not in a sea?
Answer: Specular reflection from a calm lake occurs
because the surface is so flat that all the reflected rays bounce off in the same direction
. But, if a gust of wind disturbed the water, the resulting ripples would cause a different phenomenon called diffuse reflection.
What determines if radiation is absorbed or reflected?
A significant portion of the Sun’s ultraviolet (high-energy, shortwave) radiation is
absorbed
by ozone (O3) in the upper atmosphere (the stratosphere). Solar radiation that is reflected back into space by Earth’s surface or atmosphere does not add heat to the Earth system. Absorbed radiation is transformed into heat.
Can radiation be reflected?
The reflection of electromagnetic radiation involves the returning or throwing back of the radiation by a surface upon which the radiation is incident. … Devices designed to reflect radiation are called reflectors or mirrors. The reflectivity of a surface is a measure of the amount of reflected radiation.
What’s the difference between emission and transmission?
Emission is the process of radiating. Transmission is the process of transmitting. The same with
absorption and reflection
. … Some of it is reflected, some is absorbed, and some is transmitted.
What causes scattering?
Mie scattering
Why does scattering occur?
Scattering, in physics, a
change in the direction of motion of a particle because of a collision with another particle
. As defined in physics, a collision can occur between particles that repel one another, such as two positive (or negative) ions, and need not involve direct physical contact of the particles.
