Iluminance: The intensity of light emitted from a surface per unit area in a given direction.
Example: Its lamps are an example, because the density of the amount of light that is reflected, "that falls", on a certain surface and in a certain direction and distance.
es: Iluminancia
Luminance intensity.
Noun.
Luminance Intensity:The luminous intensity is a quantity for characterizing a light source. It is defined as the luminous flux per unit solid angle.
Example: A lamp inside where the light comes out of it will have a luminous intensity.
es: Intensidad luminosa
Luminous
Adjective
Luminous:Full of or shedding light; bright or shining, especially in the dark.
Example: The sun is a luminous object.
es: Luminosa
Non- luminous
Adjective
Non-luminous: non-luminous (not comparable) Not capable of producing light, but possibly capable of reflecting light from another source.
Example: The Earth dont produce light, so he is a non-luminous object.
es: No luminosa
Opaque
Adjective
Opaque: Not able to be seen through; not transparent.
Example: The table is one opaque object, because the material opaque dont allows light to pass, so the material go reflect the light.
es: Opaco
Penumbra
Penumbra:The penumbra (from the Latin paene "almost, nearly") is the region in which only a portion of the light source is obscured by the occluding body. An observer in the penumbra experiences a partial eclipse.
Example: Penumbra are regions that receive light sources only in some parts.
es: Penumbra
Specular Reflection.
Noun.
Specular Reflection: Reflection (as of light by a mirror) at a surface having irregularities small as compared with the wavelength of the incident radiation.
Example: When the water of the river reflecte one paisage upside down.
es: Reflexión especular.
Translucent
Adjective
Translucent: Allowing light, but not detailed shapes, to pass through; semitransparent.
Example: Some types of glass make the light pass in the same time dont pass doing reflect.
es: Translúcido
Transparent
Adjective
Transparent: Allowing light to pass through so that objects behind can be distinctly seen.
Example: The glass is one transparent object, because the light can pass him.
es: Transparente
Umbra
Adjective and Noun.
Umbra: The umbra (Latin for "shadow") is the innermost and darkest part of a shadow, where the light source is completely blocked by the occluding body. An observer within the umbra experiences a total eclipse.
Example: The part of the moon where it has full shadow is called umbra.
