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

b. Astronomy. Designating or involving a prism or a diffraction grating that is located in front of the objective of a refracting telescope, and disperses the incident light such that the image of any object is seen as a spectrum, thus enabling the spectra of a group of stars to be recorded in a single photograph. Esp. in objective grating, objective prism, objective spectroscope.

ΚΠ

1893 Proc. Royal Soc. 1892–3 52 326 The chief instrument employed in this work has been a 6-inch refracting telescope in conjunction with—at different times—objective prisms of 7½° and 45° respectively.

1896 Astrophysical Jrnl. 3 61 It is also of interest to consider..the question of the objective grating spectroscope or object glass grating.

1903 London, Edinb., & Dublin Philos. Mag. 6th Ser. 6 121 This grating gives good definition at the centre of curvature, but when it was used as an objective spectroscope at Union Springs the definition was greatly impaired.

1964 ISA Trans. 3 223/1 In the objective grating or slitless spectrograph used, the spectrum is a series of curved monochromatic images of the solar limb.

1992 S. P. Maran Astron. & Astrophysics Encycl. 226/1 K-giant stars..are found from sky surveys made with an objective prism.

单词	objective prism
释义	> as lemmas objective prism b. Astronomy. Designating or involving a prism or a diffraction grating that is located in front of the objective of a refracting telescope, and disperses the incident light such that the image of any object is seen as a spectrum, thus enabling the spectra of a group of stars to be recorded in a single photograph. Esp. in objective grating, objective prism, objective spectroscope. ΚΠ 1893 Proc. Royal Soc. 1892–3 52 326 The chief instrument employed in this work has been a 6-inch refracting telescope in conjunction with—at different times—objective prisms of 7½° and 45° respectively. 1896 Astrophysical Jrnl. 3 61 It is also of interest to consider..the question of the objective grating spectroscope or object glass grating. 1903 London, Edinb., & Dublin Philos. Mag. 6th Ser. 6 121 This grating gives good definition at the centre of curvature, but when it was used as an objective spectroscope at Union Springs the definition was greatly impaired. 1964 ISA Trans. 3 223/1 In the objective grating or slitless spectrograph used, the spectrum is a series of curved monochromatic images of the solar limb. 1992 S. P. Maran Astron. & Astrophysics Encycl. 226/1 K-giant stars..are found from sky surveys made with an objective prism. extracted from objectiveadj.n. < as lemmas
随便看	coracohumeral ligament coracohyoid coracoid coracoid bone coracoid process coracoidal coracoids coracomandibular coracomorphic coracopectoral coracoprocoracoid coracoprocoracoid symphyseal ligament coracoscapular coracosteal coracosteal ossification coracosteon coracovertebral coradicate coraggio coraggios corahism coraiouste coraise coral coral bead plant

> as lemmas