The phenomenon of light spreading out after passing through a small opening is called ___. A. reflection B. refraction C. diffraction D. polarization 相关知识点: 试题来源: 解析 C。本题考查光的衍射现象。diffraction 是衍射,光通过小孔后散开是衍射现象。reflection 是反射,refraction 是折射,polarizati...
W. J. Stillman calls attention (NATURE, vol. xxiv. p. 260), finds an obvious explanation in the well-known optical phenomenon of diffraction rings, produced when a beam of light is transmitted through a small circular aperture, and viewed by means of a lens. Had your ``Cecropian'' ...
to which Mr. W. J. Stillman calls attention (NATURE, vol. xxiv. p. 260), finds an obvious explanation in the well-known optical phenomenon of diffraction rings, produced when a beam of light is transmitted through a small circular aperture, and viewed by means of ...
interference fringe, fringe - one of the light or dark bands produced by the interference and diffraction of light incidence - the striking of a light beam on a surface; "he measured the angle of incidence of the reflected light" optical illusion - an optical phenomenon that results in a fa...
Spectral properties of a class of partially coherent light with spectral profiles of varying bandwidths are studied on diffraction by a circular aperture in the far zone for different diffractive angles, i.e., for on-axis and off-axis points on the observation plane. It is found that the spe...
Rainbow hologram is based on the characteristics of light diffraction phenomenon. 彩虹全息图像的拍摄是根据平的衍射本体共性获得的。 www.bjzhika.com 2. It is pointed out that the non-diffracted beam is a kind of Fresnel diffraction phenomenon. 同时指出所谓无衍射光束实际上是一种菲涅耳衍射现象。 www...
1 Chapter 10 Diffraction March 9, 11 Fraunhofer diffraction: The single slit 10.1 Preliminary considerations Diffraction: The deviation of light from propagation. Example: What is the ratio of the irradiances at the central peak maximum to the first of the secondary maxima?
This paper demonstrates that a knife-edge diffraction pattern is, indeed, due to the interference of two superimposing waves: the geometrical wave and the boundary diffraction wave. Within the framework of boundary diffraction wave theory it is shown that this diffraction pattern can easily be broade...
Why are electrons allowed to fall on a crystal plate for diffraction? 1. (a) Where can lightning take place? That is, where can it begin and end? (b) Describe what is meant by heat lightning and a bolt from the blue. 2. What ty...
They are best seen when a bright light is shone through the closed eyelids, when the retinal vessels cast a shadow on the unadapted, underlying photoreceptors. Other harmless entoptic phenomena include Purkinje blue arcs, Haidinger brushes, light diffraction through eye lashes, as well as floaters...