grism中文什么意思

棱栅

例句与用法

1. The grism spectra , taken with hubble and analysed with software developed at the space telescope - european coordinating facility in munich , germany - can be obtained for objects that are significantly fainter than can be studied spectroscopically with any other current telescope
   “哈勃”所使用的棱栅以及由位于慕尼黑的空间望远镜欧洲合作机构开发的软件，能够获取比其他现有望远镜上分光镜能研究的暗得多的目标。

百科释义

A grism (also called a grating prism) is a combination of a prism and grating arranged so that light at a chosen central wavelength passes straight through. The advantage of this arrangement is that one and the same camera can be used both for imaging (without the grism) and spectroscopy (with the grism) without having to be moved.