Applied Physics BH.T. Eyyuboğlu, Y. Baykal, X. Ji, Appl. Phys. B 99 , 801 (2010)Eyyuboglu, H. T., Y. Baykal, and X. Ji, "Radius of curvature variations for annular, dark hollow and flat topped beams in turbulence," Appl. Phys. B, Vol. 99, No. 4, 801-807, 2010....
A New Method for Interpreting the Effective Radius of Curvature: Two-Dimensional Case Starting from the vector field theory, the expression of the time average energy flow density and R are just the x and y directional effective radii of cur... C Qing,D Xi-Ming - 《Chinese Physics Letters...
We describe the accurate measurement of the radius of curvature of a concave mirror in a Fabry-Perot interferometer with a finesse of 78,100. The radius of curvature of the concave mirror is determined by measuring the free spectral range and the transverse-mode range with the frequency response...
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Ji - 《Applied Physics B》 被引量: 5发表: 2010年 Influence of turbulence on the effective radius of curvature of partially coherent Hermite-Gaussian array beams The analytical expression for the effective radius of curvature R of partially coherent Hermite-Gaussian (H-G) array beams propagating ...
For a 3D spiral curve, the two radii and the two instantaneous centers of rotation for the spiral curve are also given. It is interesting to find that the two parameters in the Frenet equation have the same meaning of radius of curvature but in different planes. In a similar way of the...
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Furthermore, in astronomy and geophysics, a nominal radius of earth is sometimes employed as a unit of measurement. 6,371 kilometres is commonly used as a global average value. The radius of curvature is another approach to define and measure the Earth radius, and some definitions produce resul...
straight line - a line traced by a point traveling in a constant direction; a line of zero curvature; "the shortest distance between two points is a straight line" geodesic, geodesic line - (mathematics) the shortest line between two points on a mathematically defined surface (as a straight...
Measurement of a long radius of curvature using a half-aperture bidirectional shearing interferometer We describe a simple method for measuring the long radius of curvature by using a half- aperture bidirectional shearing interferometer. The method is based... Lee,W Yun - 《Optical Engineering》 被...