What does selective yellow mean?
Definitions for selective yellow
se·lec·tive yel·low
This dictionary definitions page includes all the possible meanings, example usage and translations of the word selective yellow.
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Wiktionary
selective yellownoun
A standardized colour for automotive lamps, intended to improve vision by removing blue wavelengths from the projected light.
Wikipedia
Selective yellow
Selective yellow is a colour for automotive lamps, particularly headlamps and other road-illumination lamps such as fog lamps. Under ECE regulations, headlamps were formerly permitted to be either white or selective yellow—in France, selective yellow was mandatory for all vehicles' road-illumination lamps until 1993.
Wikidata
Selective yellow
Selective yellow is a colour for automotive lamps. Under ECE regulations, headlamps were formerly permitted to be either white or selective yellow—in France, selective yellow was mandatory for all vehicles' road-illumination lamps until 1993. Both the internationalised European ECE Regulation 19 and North American SAE standard J583 permit selective yellow front fog lamps. ECE Regulation 48 currently requires new vehicles to be equipped with headlamps emitting white light. However, selective yellow headlamps remain permitted throughout Europe on vehicles already so equipped, as well as in non-European locales such as Japan and New Zealand. The intent of selective yellow is to improve vision by removing short, blue to violet wavelengths from the projected light. These wavelengths are difficult for the human visual system to process properly, and they cause perceived dazzle and glare effects in rain, fog and snow. Removing the blue-violet portion of a lamp's output to obtain selective yellow light can entail filter losses of around 15%, though the effect of this reduction is mitigated or countervailed by the increased visual acuity available with yellow rather than white light in bad weather.
Numerology
Chaldean Numerology
The numerical value of selective yellow in Chaldean Numerology is: 6
Pythagorean Numerology
The numerical value of selective yellow in Pythagorean Numerology is: 3
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"selective yellow." Definitions.net. STANDS4 LLC, 2024. Web. 25 Apr. 2024. <https://www.definitions.net/definition/selective+yellow>.
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