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What is the simple definition of optical density and how does it relate to the absorption of light?
Optical density is a measure of how much light is absorbed by a substance. It is related to the absorption of light because the higher the optical density, the more light is absorbed by the substance.
What can happen to light energy travelling through the air when it meets a new substance.?
Light energy can be absorbed, reflected, refracted, or transmitted when it meets a new substance. The specific interaction depends on the properties of the substance, such as its density and composition.
Will a substance with a high density be heavy or light?
A substance with high density will be heavy because density is a measure of the mass of the substance per unit volume. High density means there is a greater amount of mass packed into a defined volume, resulting in a heavier weight relative to its size.
What three things can happen to light when it encounters a substance?
Light can be absorbed by the substance, reflected off the substance, or transmitted through the substance.
What measure of how light or heavy something is for its size?
Density is the measure of how light or heavy something is for its size, calculated by dividing the mass of an object by its volume. It indicates how compact the particles are within a substance.
What is the proportion of light reflected by a planet?
The proportion of light reflected by a planet is known as its albedo. Albedo is a measure of how much sunlight is reflected by an object, with values ranging from 0 (no reflection) to 1 (total reflection). Planets with higher albedos appear brighter as they reflect more light.
What happens when light strikes a substance?
When light strikes a substance, it can be absorbed, transmitted, or reflected. The interaction between light and the substance depends on factors such as the substance's physical properties, wavelength of light, and surface texture. Absorption of light can lead to heating of the substance, while reflection is what allows us to see objects.
When light is reflected are the lumens reflected too?
Yes. The lumen is a measure of the strength of light; if light may be detected , it is done via the presence of photons, their intensity is the measure of luminosity.
If a substance appears red in color then what color light is reflected?
I think it's mainly the red light that's reflected from the object.
Will a given volume of a substance with low density be heavy or light?
Light.
When the amount of light reflected increases called?
When the amount of light reflected increases, it is referred to as brightness or luminance. This is a measure of how intense the light appears to the human eye.
What is the proportion of light reflected by a planet called?
The proportion of light reflected by a planet is called its albedo. It is a measure of how much of the incoming sunlight is reflected back into space by the planet's surface.
