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Specular reflections
- Because all the light reflects in a predictable way, images can be formed by specular reflections.
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Why are images formed by Specular reflection?
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Light waves - Edexcel. All waves will reflect and refract in the right circumstances. The reflection and refraction of light explains how people see images, colour and even optical...
- Specular Reflection
- Concave Mirrors
- Convex Mirrors
- Scattering of Light
The angle at which light hits a reflecting surface is called the angle of incidence, and the angle at which light bounces off a reflecting surface is called the angle of reflection If you want to measure these angles, imagine a perfectly straight line at a right angle to the reflective surface (this imaginary line is called ‘normal’). If you measur...
The inside curve of a spoon is an example of a concave mirror Concave mirrors are used in certain types of astronomical telescopes called reflecting telescopes. The mirrors condense lots of light from faint sources in space onto a much smaller viewing area and allow the viewer to see far away objects and events in space that would be invisible to t...
Convex mirrors curve outwards, like the outside of a balloon. Parallel rays of light strike the mirror and are reflected outwards. If imaginary lines are traced back, they appear to come from a focal point behind the mirror. Convex mirrors are useful for shop security and rear-view mirrors on vehicles because they give a wider field of vision.
Some light is scattered in all directions when it hits very small particles such as gas molecules or much larger particles such as dust or droplets of water. The amount of scattering depends on how big the particle is compared to the wavelength of light that is hitting it. Smaller wavelengths are scattered more. “Why is the sky blue?” is a common q...
Learn about the law of reflection through ray diagrams and plane mirrors, and the key facts of refraction with a practical experiment using ray tracing.
Key points. Light travels as a. transverse wave. and can be reflected by surfaces and objects. Smooth, shiny surfaces produce. specular reflections. , and rough surfaces produce. diffuse...
Key learning points. Reflection involves a source of light and a surface. Light travels towards a surface and bounces off it. We often see things because light travels from light sources to objects and then to our eyes. Scientific diagrams and models can be used to show how we see reflected light.
Upon reflecting, the light will converge at a point. At the point where the light from the object converges, a replica, likeness or reproduction of the actual object is created. This replica is known as the image. Once the reflected light rays reach the image location, they begin to diverge.
Diagram of light reflection in a flower. Part of the incident light (I) is reflected by the surface (R surface ) or by the interior (R interior ), part of the light is transmitted (T)...
