luminous efficiency - tradução para italiano
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luminous efficiency - tradução para italiano

MEASURE OF HOW WELL A LIGHT SOURCE PRODUCES VISIBLE LIGHT
Luminous coefficient; Luminous efficiency; Lighting efficiency; Luminous efficacies; Lighting efficacy; Lm/W; Overall luminous efficiency; Overall luminous efficacy; Wall-plug luminous efficacy; Wall-plug efficacy; Wall-plug luminous efficiency; Luminous efficacy of a source; Luminous efficacy of radiation; Lumen per watt; Lumens per watt; Bulb efficiency
  • access-date=2022-01-05}}</ref>

luminous efficiency         
efficienza luminosa (il rapporto fra la quantità di luce emessa e quella effettivamente utilizzata)
thermal efficiency         
  • Output (mechanical) energy is always lower than input energy
PERFORMANCE MEASURE OF A DEVICE THAT USES THERMAL ENERGY, EXPRESSED AS THE RATIO OF WORK DONE OVER THERMAL ENERGY USED
Thermodynamic efficiency; Thermal efficiencies; Ηth
efficienza termale (rapporto fra quantità di calore utilizzato e quello disperso)
fuel consumption         
FORM OF THERMAL EFFICIENCY
Gas mileage; Fuel efficient; Fuel economics; Fuel consumption; Mile per gallon; Vehicle effiency; Vehicle efficiency; Fuel-efficient; Fuel-efficient car; Fuel efficiancy; Km/l; Fuel savings; Fuel-efficiency; Fuel use; Fuel Efficiency
consumo di combustibile

Definição

thermal efficiency
¦ noun the efficiency of a heat engine measured by the ratio of the work done by it to the heat supplied to it.

Wikipédia

Luminous efficacy

Luminous efficacy is a measure of how well a light source produces visible light. It is the ratio of luminous flux to power, measured in lumens per watt in the International System of Units (SI). Depending on context, the power can be either the radiant flux of the source's output, or it can be the total power (electric power, chemical energy, or others) consumed by the source. Which sense of the term is intended must usually be inferred from the context, and is sometimes unclear. The former sense is sometimes called luminous efficacy of radiation, and the latter luminous efficacy of a light source or overall luminous efficacy.

Not all wavelengths of light are equally visible, or equally effective at stimulating human vision, due to the spectral sensitivity of the human eye; radiation in the infrared and ultraviolet parts of the spectrum is useless for illumination. The luminous efficacy of a source is the product of how well it converts energy to electromagnetic radiation, and how well the emitted radiation is detected by the human eye.