【摘要】 通过菲涅耳公式,对气泡内外界面的光强进行了计算,得出气泡界面第2次反射光强I’2s和I’2p(内表面)、折射光强I2s和I2p(外表面)的一般规律,及不同偏振态的光线在界面第n次反射和折射后的光强与第2次光强的关系。理论和实验均表明,光在气泡界面连续反射4次后基本消失。最后通过激光和CCD相机抓拍到水中气泡的图像,能明显获得出射光线轨迹,实验测量出射光强的值与理论计算值相吻合。更多还原

【Abstract】 A light incidence to water at bubble interface, the intensities of bubble’s inside and outside some point are calculated by Fresnel’s formula. After obtaining the intensity of the second reflection I’2s, I’2p (inside) and refraction Iss, I2p (outside ),the common conclusion of n-th intensity of reflection and refraction at water-bubble interface is Ins=I2sqsn-2, Inp-I2pq pn-2, I’2sqsn-2 and Inp=I2pqpn-2, I’np=I’2Pgpn-2(n>2). Theory and experimentation all indicate that the intensity of 4th continuous reflection almost disappears. The bubble in water is shot quickly by laser (He-Ne 632.8nm, DPSS 532nm) and CCD camera. The emergent ray can be seen distinctly in water, the measured intensity is in agreement with the theoretical ones.更多还原