“X-ray crystallography”的概念、定义、翻译、参考文献-科学参考

X-ray crystallography

Physics

The use of X-ray diffraction to determine the structure of crystals or molecules. The technique involves directing a beam of X-rays at a crystalline sample and recording the diffracted X-rays on a photographic plate. The diffraction pattern consists of a pattern of spots on the plate, and the crystal structure can be worked out from the positions and intensities of the diffraction spots. X-rays are diffracted by the electrons in the atoms and if crystals of a compound are used, the electron density distribution in the ions or molecules can be determined. See also neutron diffraction.

http://www-structmed.cimr.cam.ac.uk/Course/Overview/Overview.html An illustrated introduction to the principles of X-ray crystallography, compiled by Randy Read, University of Cambridge

Chemistry

The use of X-ray diffraction to determine the structure of crystals or molecules. The technique involves directing a beam of X-rays at a crystalline sample and recording the diffracted X-rays on a photographic plate. The diffraction pattern consists of a pattern of spots on the plate, and the crystal structure can be worked out from the positions and intensities of the diffraction spots. X-rays are diffracted by the electrons in the molecules and if molecular crystals of a compound are used, the electron density distribution in the molecule can be determined.

Chemical Engineering

The use of diffraction of X-rays for the determination of the structure of crystals or molecules. It uses a beam of X-rays directed onto the target sample that is diffracted and captured on a photographic plate as a pattern of light and dark spots of differing intensities. These are analysed, and from which, the structure of the crystal or molecule is deduced. Since the wavelength of X-rays is comparable to the distance between the atoms in most crystals, the repeating structure acts like a diffraction grating for X-rays.

Electronics and Electrical Engineering

See X-rays.

Biology

The use of X-ray diffraction to determine the structure of crystals or molecules, such as nucleic acids. The technique involves directing a beam of X-rays at a crystalline sample and recording the diffracted X-rays on a photographic plate or other detector, such as a transducer that can create a digital image. The diffraction pattern consists of a pattern of spots on the image, and the crystal structure can be worked out from the positions and intensities of the diffraction spots. X-rays are diffracted by the electrons in the molecules and if molecular crystals of a compound are used, the electron density distribution in the molecule can be determined.
http://www-structmed.cimr.cam.ac.uk/Course/Overview/Overview.html Illustrated introduction to the principles of X-ray crystallography, compiled by Randy Read, University of Cambridge

单词	X-ray crystallography
释义	X-ray crystallography Physics The use of X-ray diffraction to determine the structure of crystals or molecules. The technique involves directing a beam of X-rays at a crystalline sample and recording the diffracted X-rays on a photographic plate. The diffraction pattern consists of a pattern of spots on the plate, and the crystal structure can be worked out from the positions and intensities of the diffraction spots. X-rays are diffracted by the electrons in the atoms and if crystals of a compound are used, the electron density distribution in the ions or molecules can be determined. See also neutron diffraction. http://www-structmed.cimr.cam.ac.uk/Course/Overview/Overview.html An illustrated introduction to the principles of X-ray crystallography, compiled by Randy Read, University of Cambridge Chemistry The use of X-ray diffraction to determine the structure of crystals or molecules. The technique involves directing a beam of X-rays at a crystalline sample and recording the diffracted X-rays on a photographic plate. The diffraction pattern consists of a pattern of spots on the plate, and the crystal structure can be worked out from the positions and intensities of the diffraction spots. X-rays are diffracted by the electrons in the molecules and if molecular crystals of a compound are used, the electron density distribution in the molecule can be determined. Chemical Engineering The use of diffraction of X-rays for the determination of the structure of crystals or molecules. It uses a beam of X-rays directed onto the target sample that is diffracted and captured on a photographic plate as a pattern of light and dark spots of differing intensities. These are analysed, and from which, the structure of the crystal or molecule is deduced. Since the wavelength of X-rays is comparable to the distance between the atoms in most crystals, the repeating structure acts like a diffraction grating for X-rays. Electronics and Electrical Engineering See X-rays. Biology The use of X-ray diffraction to determine the structure of crystals or molecules, such as nucleic acids. The technique involves directing a beam of X-rays at a crystalline sample and recording the diffracted X-rays on a photographic plate or other detector, such as a transducer that can create a digital image. The diffraction pattern consists of a pattern of spots on the image, and the crystal structure can be worked out from the positions and intensities of the diffraction spots. X-rays are diffracted by the electrons in the molecules and if molecular crystals of a compound are used, the electron density distribution in the molecule can be determined. http://www-structmed.cimr.cam.ac.uk/Course/Overview/Overview.html Illustrated introduction to the principles of X-ray crystallography, compiled by Randy Read, University of Cambridge
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