The operating principles of an Imaging Fourier Transform Spectrometer(IFTS) are discussed. The advantages and disadvantages of such instruments with respect to alternative imaging spectrometers are discussed. The primary advantages of the IFTS are the capacity to acquire more than an order of magnitude more spectral channels than alternative systems with more than an order of magnitude greater 6tendue than for alternative systems. The primary disadvantage of IFTS, or FTS :in general, is the sensitivity to temporal fluctuations, either random or periodic. Data from the IRIFTS (ir IFTS)
prototype instrument, sensitive in the infrared, are presented having a spectral sensitivity of 0.01 absorbance units, a spectral resolution of 6 cm-1 over the range 0 to 7899 cm -1, and a spatial resolution of 2.5 mr.
尊敬的老师同学们:
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教师节就要到了,我们因该给我们亲爱的老师献上点什么呢?尊敬师长不一定要送礼,送礼不一定表示敬重老师。真诚无邪的情感是不能用任何东西代替的,只有脚踏实地努力学习,才是对老师的辛劳最好的报答。
家有家规,国有国规,那校也有校规。我们不光要服从老师的领导,还要听从学校的指挥。我们要像服从命令一样服从学校的指挥。不应该和学校做对,和老师顶嘴。
白云奉献给蓝天,江湖奉献给海洋,小草奉献给大地,我们要用什么奉献给老师呢?要用我们的爱心、勤奋、勇敢、宽宏、乐观、谦虚编织成最美丽的花朵奉献给我们的老师,奉献给我们的校园!
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