The equations of caustic curve and its initial curve for a crack illuminated by an oblique incident light beam in reflection arrangement were deduced using the space analytic geometry method.
Remember childhood, West oblique sunlight, the golden rays of light beam in the water, the sun will live in the moment, so like in real dance.
记得小时候，阳光西西斜，金色的光芒斜射在水面上，阳光在那一刻便活了，那么真实像是在跳舞。
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To determine the optical parameters of turbid media with an unpolarized backscattering light an oblique incidence geometry with the compound bp neural network has been designed.