Since the normal is different for each ray of light, the direction of the reflected ray will also be different. Perhaps you have observed magazines which have glossy pages.
The usual microscopically rough surface of paper has been filled in with a glossy substance to give the pages of the magazine a smooth surface. Do you suppose that it would be easier to read from rough pages or glossy pages? Explain your answer. It is much easier to read from rough pages which provide for diffuse reflection. Glossy pages result in specular reflection and cause a glare. The reader typically sees an image of the light bulb which illuminates the page.
If you think about, most magazines which use glossy pages are usually the type which people spend more time viewing pictures than they do reading articles. Physics Tutorial. My Cart Subscription Selection. Student Extras. Diffuse Reflection. See Answer Each individual ray strikes a surface which has a different orientation. See Answer It is much easier to read from rough pages which provide for diffuse reflection.
Monto Carlo simulations for scattering of electromagnetic waves from perfectly conductive random rough surfaces. Liu, J. Identification of dispersion-dependent hexagonal cavity modes. Starykh, O. Signature of dynamical localization in the resonance width distribution of wave-chaotic dielectric cavities. E 62, — Fang, W. Dynamical localization in microdisk lasers. Express 13, — Braun, I. Hexagonal microlasers based on organic dyes in nanoporous crystals.
B 70, — Download references. You can also search for this author in PubMed Google Scholar. Yang designed the experiments. Wang and Y. Yang performed the experiments.
Dong and X. Chen carried out the theoretical study. Yang, J. Dong and C. Wang analysed the results. Yang and J. Dong wrote the paper. All the authors offer a critical review of the paper. Reprints and Permissions. Diffuse reflection inside a hexagonal nanocavity. Sci Rep 3, Download citation. Received : 12 November Accepted : 30 January Published : 18 February Anyone you share the following link with will be able to read this content:.
Sorry, a shareable link is not currently available for this article. Provided by the Springer Nature SharedIt content-sharing initiative. Nanoscale Research Letters Scientific Reports Applied Physics A By submitting a comment you agree to abide by our Terms and Community Guidelines.
If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate. Advanced search. Skip to main content Thank you for visiting nature. Download PDF. Subjects Applied optics Materials for optics Nanoscale materials Optical physics. Abstract Geometrical diffuse reflection is a common optical phenomenon that occurs when a reflecting surface has roughness of order of hundreds of micrometres.
Introduction Diffuse reflection is a well-known but important optical phenomenon that is commonly observed in daily life 1. Results The hexagonal ZnO nanocavities are prepared on silicon wafers using simple thermal chemical vapour transport and condensation without any metal catalysts 10 , Figure 1. Full size image. Discussion To understand wave diffuse reflection, consider a one-dimensional nanoscaled rough surface between ZnO and air in the context of the extinction theorem 12 , 13 , 14 , So let me define them right here.
So if I were to just drop a straight line that is at a 90 degree, or that is perpendicular to the surface of the actual mirror right over here, we would define this, right here, as the angle of incidence. I'll just use theta. That's just a fancy letter to show that the angle at which we're coming in, the angle between this ray and the vertical right there, that's the angle of incidence.
And then the angle between that vertical and the blue ray right there, we call that the angle of reflection. And it's just a property of especially mirrors when you're having specular reflection. And you can see this for yourself at all the regular mirrors that you might experience is that the angle of incidence is equal to the angle of reflection. And actually we could see that in a couple of images over here. So let me show you some images of specular reflection, just to make it clear here.
So you have some light from the sun hitting this mountain. And we're going to talk about diffuse reflection in a little bit, and that's what's happening. It's being reflected diffusely. That's why we don't see the actual image of the sun here. We just see the white. But then those white light rays, and they're actually being scattered in every direction, some of them are hitting the water. I'm going to try to match up parts of the mountain. So you have this part of the mountain.
Let me do this in a better color. You have this part of the mountain up here, and the part of the reflection right over there. So what's happening right here is light is coming from that part of the mountain, hitting this part of the surface of the water.
Let me see if I can draw this better. It's hitting this part of the surface of the water, and then it's getting reflected, specular reflection, to our eyes. And it's actually coming straight at us, but I'll draw it at a slight angle. And then it's just coming straight to our eyes like this.
If our eye was-- Let's say our eye was here. It's actually coming straight out at us so I actually should just draw a vertical line, but hopefully this makes it clear.
And what we just said, the angle of incidence is equal to the angle of reflection, so if you were to draw a vertical, and it might not be that obvious here, but this angle right over here-- Let me draw this a little darker color.
This angle right over here, that's the angle-- Let me do that in a light color. This right here is the incident angle.
We drew a vertical. And the angle at which the light ray is approaching the surface of the water, right before it bounces, that's the incident angle relative to vertical.
And then this angle right here-- and I know it's hard-- it doesn't look like they're the same but that's just because of the perspective that we're dealing with. This is the angle of reflection. Parry-Hill , Robert T. Sutter , and Michael W. Microscopy Primer. Light and Color. Microscope Basics. Special Techniques. Digital Imaging. Confocal Microscopy. Live-Cell Imaging. Microscopy Museum. Virtual Microscopy. Web Resources. License Info. Image Use. Custom Photos.
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