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人教版新课程高中物理选修3-4课本第13章第4节“光的色散”中提到了几种可以实现把复色光分解为单色光而形成光谱的现象,即光的色散现象.常见的实现光的色散的方式主要有光的折射、干涉和衍射,其中光的折射色散比较容易实现,学生在生活中也易于观察到;光的干涉色散在后面的双峰干涉实验中会涉及到;而衍射色散学生在生活难以观察到.为此本人设计了以下实验仪器让学生观察衍射色散现象,它不仅可以观察到非常亮丽的环状衍射彩色条纹,而且通过简单的测量,还可以粗略测量可见光(蓝光、红光)的波长.1实验器材准备
PEP New Curriculum High School Physics Elective 3-4 Textbook Chapter 13, Section 4 “Light Dispersion ” mentioned several phenomena that can be achieved by the decomposition of the complex color light into monochromatic light and the formation of the spectrum, namely the dispersion of light Phenomenon. The common way to achieve light dispersion mainly light refraction, interference and diffraction, of which the refractive index of light is relatively easy to achieve, students are also easy to observe in life; light interference dispersion in the back of the bimodal interference experiment Will be involved; and diffractive dispersion of students difficult to observe in life. To this end, I designed the following experimental apparatus for students to observe the diffraction dispersion phenomenon, it not only can be observed very bright circular diffraction color stripes, and through simple measurements, but also Can roughly measure the wavelength of visible light (blue light, red light) .1 experimental equipment preparation