英语词汇“wire micrometer”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

wire micrometer n. a micrometer used in a telescope, having horizontal and vertical wires at the focus of the eyepiece.Cf. Philos. Trans. (Royal Soc.) (1717) 30 604: ‘Mr. Gascoigne was the first that measured the Diameters of the Planets, &c. by a Micrometer’, quoting a letter of Gascoigne's dated 25 Jan. 1642.

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the world > the universe > cosmology > science of observation > astronomical instruments > observational instruments > [noun] > telescope > part of > micrometer > types of

wire micrometer1772

filar micrometer1874

1772 Philos. Trans. 1771 (Royal Soc.) 61 536 The common wire micrometer is peculiarly adapted for measuring differences of right ascension and declination of celestial objects.

1836 F. W. Simms Principal Math. Instruments (ed. 2) 41 A delicate wire micrometer attached to the eye-end of the telescope, by which the distances of the staff from the instrument are accurately determined.

1922 H. S. Jones Gen. Astron. ix. 221 Determination of Diameters of Planets... The wire micrometer is generally uses, the wires being placed tangentially to the two limbs of the planet and then crossed over.

2002 W. M. Jackson in C. Baker Absolutism & Sci. Revol. 129 Gascoigne is generally admitted to be the inventor of the wire micrometer and of the attachment of this device to the interior of the eyepiece of a telescope.

单词	wire micrometer
释义	> as lemmas wire micrometer wire micrometer n. a micrometer used in a telescope, having horizontal and vertical wires at the focus of the eyepiece.Cf. Philos. Trans. (Royal Soc.) (1717) 30 604: ‘Mr. Gascoigne was the first that measured the Diameters of the Planets, &c. by a Micrometer’, quoting a letter of Gascoigne's dated 25 Jan. 1642. ΘΚΠ the world > the universe > cosmology > science of observation > astronomical instruments > observational instruments > [noun] > telescope > part of > micrometer > types of wire micrometer1772 filar micrometer1874 1772 Philos. Trans. 1771 (Royal Soc.) 61 536 The common wire micrometer is peculiarly adapted for measuring differences of right ascension and declination of celestial objects. 1836 F. W. Simms Principal Math. Instruments (ed. 2) 41 A delicate wire micrometer attached to the eye-end of the telescope, by which the distances of the staff from the instrument are accurately determined. 1922 H. S. Jones Gen. Astron. ix. 221 Determination of Diameters of Planets... The wire micrometer is generally uses, the wires being placed tangentially to the two limbs of the planet and then crossed over. 2002 W. M. Jackson in C. Baker Absolutism & Sci. Revol. 129 Gascoigne is generally admitted to be the inventor of the wire micrometer and of the attachment of this device to the interior of the eyepiece of a telescope. extracted from wiren.¹ < as lemmas
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> as lemmas