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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...
What are light waves? Light is a type of electromagnetic radiation that can be detected by the eye. It travels as a transverse wave. Unlike a sound waves, light waves do not need a medium to...
A lens is a shaped piece of transparent glass or plastic that refracts light. When light is refracted, it changes direction due to the change in density as it moves between air and glass or...
- 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...
Jul 4, 2018 · Apart from pigments that selectively absorb light at specific wavelength ranges, three main characteristics determine a flower’s reflectance: the refractive index difference between floral structures, the flower’s interior inhomogeneity and the flower’s thickness.
- Casper J van der Kooi, Adrian G Dyer, Peter G Kevan, Klaus Lunau
- 10.1093/aob/mcy119
- 2019
- Ann Bot. 2019 Jan; 123(2): 263-276.
Light often is partially absorbed and partially reflected. It may also be transmitted through a transparent material, such as water or glass. Typically, if the surface of a transparent material is smooth, such as that of a window pane, light is transmitted partially and reflected partially.
People also ask
How do we separate the light reflected by the flower surface?
How is light reflected in a flower?
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Why are flower surface structures important?
Apr 9, 2014 · To separate the light reflected by the flower surface from the light backscattered by the components inside (e.g. the vacuoles), we also investigated surface casts. A survey among angiosperms revealed three different types of floral surface structure, each with distinct reflections.
