electrophorusn.

Brit.

/ᵻˌlɛkˈtrɒf(ə)rəs/,

/ˌɛlɛkˈtrɒf(ə)rəs/,

/ˌɛlɪkˈtrɒf(ə)rəs/,

/ˌɪlɛkˈtrɒf(ə)rəs/,

/ˌiːlɛkˈtrɒf(ə)rəs/, U.S.

/əˌlɛkˈtrɑf(ə)rəs/,

/iˌlɛkˈtrɑf(ə)rəs/

Inflections: Plural electrophori.

Origin: A borrowing from Latin. Etymon: Latin electrophorus.

Etymology: < post-classical Latin electrophorus (apparently coined by Volta c1775 (compare quot. 1776), although the device itself was apparently earlier described by J. Wilcke) < electro- electro- comb. form + ancient Greek -ϕόρος -phore comb. form. Compare French électrophore (1776, earliest in électrophore perpétuel ), Italian elettroforo (a1798), and also medieval Greek ἠλεκτροϕόρος amber-bearing. Compare electrophore n.

A simple instrument for generating static electricity by induction.The electrophorus consists of a metal plate with an insulating handle, and a separate plate of a dielectric (insulating) material. The dielectric plate is given an electric charge by rubbing it. The metal plate is then placed on top of it, so that the metal's two surfaces become oppositely charged. The side of the metal plate not touching the dielectric plate is momentarily earthed (so that the charge on that side escapes), and the metal plate is then withdrawn, bearing charge of one kind only.

ΘΚΠ

the world > matter > physics > electromagnetic radiation > electricity > [noun] > static electricity > instrument for generating

electrophore1777

electrophorus1777

Wimshurst machine1886

van de Graaff1934

1776 J. Ingenhousz Let. 15 Nov. in W. B. Willcox Papers Benjamin Franklin (1983) XXIII. 10 The new electrical machine, called by the discoverer, one mr. Volta, an Italien gentleman, Electrophorus perpetuus affords much matter of speculation.]

1777 T. Cavallo Compl. Treat. Electr. 380 The Machine for exhibiting perpetual Electricity, or the Electrophorus.

1782 A. Volta in Philos. Trans. (Royal Soc.) 72 App. p. vii My electrophorus..is a machine well known to electricians.

1880 Gentleman's Mag. Dec. 751 A cat's skin..is an admirable rubber for an electrophorus.

1938 L. Hogben Sci. for Citizen xiii. 632 If the metal disc of the electrophorus is brought near an electroscope before sparking it is found to be charged. After sparking it is no longer charged.

1998 Brain Res. Bull. 46 373/1 There were..other research instruments, some of which had recently been invented, such as the electrophorus and ‘Volta pistol’.

This entry has been updated (OED Third Edition, June 2008; most recently modified version published online March 2022).

单词	electrophorus
释义	electrophorusn. Brit. /ᵻˌlɛkˈtrɒf(ə)rəs/, /ˌɛlɛkˈtrɒf(ə)rəs/, /ˌɛlɪkˈtrɒf(ə)rəs/, /ˌɪlɛkˈtrɒf(ə)rəs/, /ˌiːlɛkˈtrɒf(ə)rəs/, U.S. /əˌlɛkˈtrɑf(ə)rəs/, /iˌlɛkˈtrɑf(ə)rəs/ Inflections: Plural electrophori. Origin: A borrowing from Latin. Etymon: Latin electrophorus. Etymology: < post-classical Latin electrophorus (apparently coined by Volta c1775 (compare quot. 1776), although the device itself was apparently earlier described by J. Wilcke) < electro- electro- comb. form + ancient Greek -ϕόρος -phore comb. form. Compare French électrophore (1776, earliest in électrophore perpétuel ), Italian elettroforo (a1798), and also medieval Greek ἠλεκτροϕόρος amber-bearing. Compare electrophore n. A simple instrument for generating static electricity by induction.The electrophorus consists of a metal plate with an insulating handle, and a separate plate of a dielectric (insulating) material. The dielectric plate is given an electric charge by rubbing it. The metal plate is then placed on top of it, so that the metal's two surfaces become oppositely charged. The side of the metal plate not touching the dielectric plate is momentarily earthed (so that the charge on that side escapes), and the metal plate is then withdrawn, bearing charge of one kind only. ΘΚΠ the world > matter > physics > electromagnetic radiation > electricity > [noun] > static electricity > instrument for generating electrophore1777 electrophorus1777 Wimshurst machine1886 van de Graaff1934 1776 J. Ingenhousz Let. 15 Nov. in W. B. Willcox Papers Benjamin Franklin (1983) XXIII. 10 The new electrical machine, called by the discoverer, one mr. Volta, an Italien gentleman, Electrophorus perpetuus affords much matter of speculation.] 1777 T. Cavallo Compl. Treat. Electr. 380 The Machine for exhibiting perpetual Electricity, or the Electrophorus. 1782 A. Volta in Philos. Trans. (Royal Soc.) 72 App. p. vii My electrophorus..is a machine well known to electricians. 1880 Gentleman's Mag. Dec. 751 A cat's skin..is an admirable rubber for an electrophorus. 1938 L. Hogben Sci. for Citizen xiii. 632 If the metal disc of the electrophorus is brought near an electroscope before sparking it is found to be charged. After sparking it is no longer charged. 1998 Brain Res. Bull. 46 373/1 There were..other research instruments, some of which had recently been invented, such as the electrophorus and ‘Volta pistol’. This entry has been updated (OED Third Edition, June 2008; most recently modified version published online March 2022). < n.1777
随便看	quintaining quintains quintal quintals quintan quintangular quintans quintant quintary quintas quinte quintel quintennial quinternion quintes quintessence quintessenced quintessences quintessential quintessentiality quintessentialize quintessentialized quintessentially quintessentials quintessentiate