scotophorn.

Brit.

/ˈskəʊtəfɔː/, U.S.

/ˈskoʊdəˌfɔr/

Forms: 1900s– scotophor, 1900s– scotophore (rare).

Origin: Formed within English, by compounding. Etymons: scoto- comb. form², phosphor n.

Etymology: < scoto- comb. form² + -phor (in phosphor n.).In form scotophore perhaps influenced by -phore comb. form, but compare also phosphore at phosphor n. and adj. Forms.

Electronics.

A substance which darkens when bombarded with electrons; spec. such a substance (esp. potassium chloride) used as a coating in cathode ray tubes, providing the reverse of the imaging behaviour of a phosphor coating.

ΘΚΠ

the world > matter > physics > electromagnetic radiation > electronics > electronic devices or components > cathode-ray tube > [noun] > coating of screen

scotophor1946

1946 H. W. Leverenz in RCA Rev. 7 199 The terms ‘tenebrescence’ and ‘scotophor’ are derived..to correspond to the terms ‘luminescence’ and ‘phosphor’.

1955 Electronics Feb. 170/1 Potassium chloride (KCL) has been found to be the most suitable scotophor, or screen material, for practical dark-trace tubes.

1983 K. Nassau Physics & Chem. Color ix. 199 Suitably doped KCl has been used as a scotophore [sic] ‘dark-bearer’, providing a slowly bleaching phosphor in a radar display-type cathode ray tube.

2001 U.S. Patent 6,296,750 5 Potassium chloride (dark trace-nonluminescent—called a Scotophor).

This entry has been updated (OED Third Edition, June 2011; most recently modified version published online March 2022).

单词	scotophor
释义	scotophorn. Brit. /ˈskəʊtəfɔː/, U.S. /ˈskoʊdəˌfɔr/ Forms: 1900s– scotophor, 1900s– scotophore (rare). Origin: Formed within English, by compounding. Etymons: scoto- comb. form², phosphor n. Etymology: < scoto- comb. form² + -phor (in phosphor n.).In form scotophore perhaps influenced by -phore comb. form, but compare also phosphore at phosphor n. and adj. Forms. Electronics. A substance which darkens when bombarded with electrons; spec. such a substance (esp. potassium chloride) used as a coating in cathode ray tubes, providing the reverse of the imaging behaviour of a phosphor coating. ΘΚΠ the world > matter > physics > electromagnetic radiation > electronics > electronic devices or components > cathode-ray tube > [noun] > coating of screen scotophor1946 1946 H. W. Leverenz in RCA Rev. 7 199 The terms ‘tenebrescence’ and ‘scotophor’ are derived..to correspond to the terms ‘luminescence’ and ‘phosphor’. 1955 Electronics Feb. 170/1 Potassium chloride (KCL) has been found to be the most suitable scotophor, or screen material, for practical dark-trace tubes. 1983 K. Nassau Physics & Chem. Color ix. 199 Suitably doped KCl has been used as a scotophore [sic] ‘dark-bearer’, providing a slowly bleaching phosphor in a radar display-type cathode ray tube. 2001 U.S. Patent 6,296,750 5 Potassium chloride (dark trace-nonluminescent—called a Scotophor). This entry has been updated (OED Third Edition, June 2011; most recently modified version published online March 2022). < n.1946
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