Definitions
- Describing the amount of light that falls on a surface per unit area. - Referring to the brightness of a light source as perceived by an observer. - Talking about the level of lighting in a room or space.
- Describing the total amount of light emitted by a light source. - Referring to the brightness of a star or celestial object. - Talking about the brightness of a screen or display.
List of Similarities
- 1Both words describe the brightness or intensity of light.
- 2Both words are used in scientific and technical contexts.
- 3Both words are measured using units of measurement (lux for illuminance and watts for luminosity).
What is the difference?
- 1Definition: Illuminance refers to the amount of light that falls on a surface, while luminosity refers to the total amount of light emitted by a light source.
- 2Measurement: Illuminance is measured in lux, while luminosity is measured in watts.
- 3Context: Illuminance is typically used in the context of lighting design and engineering, while luminosity is more commonly used in astronomy and physics.
- 4Subject: Illuminance is related to the perception of light by an observer, while luminosity is related to the physical properties of a light source.
- 5Usage: Illuminance is used to describe the level of lighting in a room or space, while luminosity is used to describe the brightness of stars, celestial objects, or screens.
Remember this!
Illuminance and luminosity are both words used to describe the brightness or intensity of light. However, the difference between them lies in their definition, measurement, context, subject, and usage. Illuminance refers to the amount of light that falls on a surface, while luminosity refers to the total amount of light emitted by a light source. Illuminance is measured in lux, while luminosity is measured in watts. Illuminance is typically used in the context of lighting design and engineering, while luminosity is more commonly used in astronomy and physics.
