The principle of the diffraction grating was discovered by Rittenhouse in 1785, § but this discovery attracted practically no attention. The principle was rediscovered by Fraunhofer* in 1819. Fraunhofer's first gratings were made by winding very fine wire round two parallel screws. Because of the...
Electron diffraction was discovered in 1927, but photoelectron diffraction (PD) had to wait for another 43 years, till 1970, before it was reported. In 1974 Liebsch put PD on a firm theoretical basis and also suggested that it could be used in determining the position of an adsorbed over ...
Double helical structure of DNA was discovered by fiber diffraction technique (Kasai, 2005). Fiber diffraction study of DNA–proflavine complex showed that the interaction of proflavine modifies the structure of DNA but maintains the rod-like nature of it with a decrease in the radius of gyration...
The principles of diffraction gratings were discovered by James Gregory, about a year after Newton's Prism experiments, initially with artifacts such as bird feathers. The first man-made diffraction grating was made around 1785 by Philadelphia inventor David Rittenhouse, who strung hairs between two ...
where Grimani had already discovered other antiquities. Toward the end of his life Domenico Grimani donated his collection to the Venetian state. By contrast, we have no exact information about the discovery of the “Dead Galatian”, even if generally it is assumed that this sculpture was found...
Captain Cook discovered a similar phenomenon in the intriguing movement of the boomerang used by the First Nations Australian peoples. The tropical cyclone, a transversely moving vortex flow, has always been a research hotspot in meteorology and even economics21. Similar vortex flow has also been ob...
aagain and again I was told to get use to being in a wheelchair 正在翻译,请等待... [translate] a有一张上下床,在床的旁边有一张书桌,桌上有很多书和一盏台灯,旁边有一个书柜,书柜里面有很多的课外书和一些小型的玩具,在书柜的的旁边我挂了很多的千纸鹤,和一些星星 正在翻译,请等待... ...
For example, it was discovered for poly α-l-guluronic acid that the shape of the molecule could both provide insight into how the polymers interact with each other and identify factors important for this process. Fibre X-ray diffraction studies showed that the guluronic acid unit is ...
aWhat is the source of the water discovered in Kenya 什么是在肯尼亚发现的水的来源 [translate] aA little high for me now~ haha A little high for me now~ haha [translate] awhere you from ? will you truely friendship with me ? 何处您从? 真实地将您友谊与我? [translate] a-gun 正在...
43、theorem, “space invariance” is implicitly implied,Fraunhofer diffraction of identical structures,例题:求解五方孔的夫琅禾费衍射场,位移,位移相移定理,About 1673, James Gregory discovered thediffraction gratingby passingsunlightthrough a birdfeatherand observing the diffraction pattern produced. In particu...