luxn.

Brit.

/lʌks/, U.S.

/ləks/

Forms: Plural unchanged.

Etymology: Latin, = ‘light’.

Physics.

A unit of illumination (now incorporated into the International System of Units) equal to the illumination of a surface all of which is one metre from a uniform point source of light of unit intensity (now one candela), i.e. (as now defined) one lumen per square metre.

ΘΚΠ

the world > matter > physics > electromagnetic radiation > light > intensity of light, luminosity > [noun] > unit of light intensity

lux1889

lumen1898

L1915

Lambert1915

phot1917

new candle1938

candela1950

cd1950

rayleigh1956

the world > matter > light > illumination > [noun] > unit of illumination > candela > lux

lux1889

metre-candle1899

1889 Engineering 13 Sept. 313/1 Mr. Preece was not..fortunate with his unit of surface illumination, the ‘lux’ being the illumination produced by a lamp of one Carcel power at a distance of one metre, which is practically the same illumination as that afforded by an English standard candle at a distance of 1 ft... It is probable, sooner or later, that such a unit will be adopted.

1897 Jrnl. Inst. Electr. Engineers 26 638 It was proposed by the Committee of the International Congress of Geneva that M. A. Blondel should present a report, with..a complete system of defining the dimensions and units of photometry... This report was submitted for examination of a commission..and was accepted... Lux = Lumen/Square metre.

1911 A. P. Trotter Illumination ii. 17 Sir William Preece..adopted the Carcel-metre, and he showed that it was equal to a standard candle of 1·058 foot. At the Paris Electrical Congress of 1889 he adopted the name ‘lux’ for this... The unit of illumination produced by a bougie-décimale at a metre has been called a bougie-metre, and the name ‘lux’ was revived at the Geneva Congress of 1896 and was applied to this unit... This lux is, roughly, one-twelfth of a foot-candle, or about one-fourteenth of Preece's lux. The illumination produced by a Hefner at a metre has also been called a ‘lux’, and it seems probable that the International candle at a metre may be called an International lux.

1927 Forestry 1 87 Experiments carried out..in a light intensity of 48,000 lux.

1927 Forestry 1 87 The lux is a light intensity produced by a light of one candle-power at a distance of one metre. Forty-eight thousand lux is roughly equivalent to full sunlight at noon in midsummer in Germany.

1953 S. W. Amos & D. C. Birkinshaw Television Engin. I. 279 1 lux = 1 lumen per square metre = 0·0929 foot-candle.

1970 Nature 26 Dec. 1349/2 On many days during the growth of these plants light intensities reached 80,000 lux.

This entry has not yet been fully updated (first published 1976; most recently modified version published online June 2018).

† luxv.

Etymology: < French luxer, < Latin luxāre : see luxate v.

Obsolete.

= luxate v.

ΘΚΠ

the world > health and disease > ill health > a disease > diseases of tissue > disorders of joints > affect with disorder of joints [verb (transitive)] > dislocate

unjointa1393

twist?1515

dislocate1608

dislock1609

luxate1623

to put out1640

lux1708

slip1728

to throw out1885

pop1914

1708 J. Philips Cyder ii. 488 The fall Luxt his neck-joint.

1725 W. Broome in A. Pope et al. tr. Homer Odyssey III. xi. 80 Stagg'ring I reel'd, and as I reel'd I fell, Lux'd the neck joynt.

Derivatives

ˈluxing n.

ΚΠ

1775 J. Ash New Dict. Eng. Lang. Suppl. Luxing, the act of putting out of joint.

This entry has not yet been fully updated (first published 1903; most recently modified version published online March 2021).

单词	lux
释义	luxn. Brit. /lʌks/, U.S. /ləks/ Forms: Plural unchanged. Etymology: Latin, = ‘light’. Physics. A unit of illumination (now incorporated into the International System of Units) equal to the illumination of a surface all of which is one metre from a uniform point source of light of unit intensity (now one candela), i.e. (as now defined) one lumen per square metre. ΘΚΠ the world > matter > physics > electromagnetic radiation > light > intensity of light, luminosity > [noun] > unit of light intensity lux1889 lumen1898 L1915 Lambert1915 phot1917 new candle1938 candela1950 cd1950 rayleigh1956 the world > matter > light > illumination > [noun] > unit of illumination > candela > lux lux1889 metre-candle1899 1889 Engineering 13 Sept. 313/1 Mr. Preece was not..fortunate with his unit of surface illumination, the ‘lux’ being the illumination produced by a lamp of one Carcel power at a distance of one metre, which is practically the same illumination as that afforded by an English standard candle at a distance of 1 ft... It is probable, sooner or later, that such a unit will be adopted. 1897 Jrnl. Inst. Electr. Engineers 26 638 It was proposed by the Committee of the International Congress of Geneva that M. A. Blondel should present a report, with..a complete system of defining the dimensions and units of photometry... This report was submitted for examination of a commission..and was accepted... Lux = Lumen/Square metre. 1911 A. P. Trotter Illumination ii. 17 Sir William Preece..adopted the Carcel-metre, and he showed that it was equal to a standard candle of 1·058 foot. At the Paris Electrical Congress of 1889 he adopted the name ‘lux’ for this... The unit of illumination produced by a bougie-décimale at a metre has been called a bougie-metre, and the name ‘lux’ was revived at the Geneva Congress of 1896 and was applied to this unit... This lux is, roughly, one-twelfth of a foot-candle, or about one-fourteenth of Preece's lux. The illumination produced by a Hefner at a metre has also been called a ‘lux’, and it seems probable that the International candle at a metre may be called an International lux. 1927 Forestry 1 87 Experiments carried out..in a light intensity of 48,000 lux. 1927 Forestry 1 87 The lux is a light intensity produced by a light of one candle-power at a distance of one metre. Forty-eight thousand lux is roughly equivalent to full sunlight at noon in midsummer in Germany. 1953 S. W. Amos & D. C. Birkinshaw Television Engin. I. 279 1 lux = 1 lumen per square metre = 0·0929 foot-candle. 1970 Nature 26 Dec. 1349/2 On many days during the growth of these plants light intensities reached 80,000 lux. This entry has not yet been fully updated (first published 1976; most recently modified version published online June 2018). † luxv. Etymology: < French luxer, < Latin luxāre : see luxate v. Obsolete. = luxate v. ΘΚΠ the world > health and disease > ill health > a disease > diseases of tissue > disorders of joints > affect with disorder of joints [verb (transitive)] > dislocate unjointa1393 twist?1515 dislocate1608 dislock1609 luxate1623 to put out1640 lux1708 slip1728 to throw out1885 pop1914 1708 J. Philips Cyder ii. 488 The fall Luxt his neck-joint. 1725 W. Broome in A. Pope et al. tr. Homer Odyssey III. xi. 80 Stagg'ring I reel'd, and as I reel'd I fell, Lux'd the neck joynt. Derivatives ˈluxing n. ΚΠ 1775 J. Ash New Dict. Eng. Lang. Suppl. Luxing, the act of putting out of joint. This entry has not yet been fully updated (first published 1903; most recently modified version published online March 2021). < n.1889v.1708
随便看	tubeshutter tubespinner tubestopper tubesurface tubetrain tubevalve tubevase tubevice tubewall tubeweaver tubewell tubewhistle tubework tubeworker tubeworks tubeworm tubeworms tubewrench tubfake tubfast tubfiller tubfish tubfishes tubfrock tubful