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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 illusions....
Feb 27, 2024 · A green surface reflects green light and absorbs all other colours. An object will appear white if: All wavelengths are reflected equally. An object will appear black if: All wavelengths are absorbed.
- 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...
Instead of forming an image, the reflected light is scattered in all directions. This may cause a distorted image of the object, as occurs with rippling water, or no image at all.
Coloured objects reflect certain colours and absorb others. Filters transmit some colours of light and absorb other colours of light. Colours which are transmitted pass through the filter and...
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.
People also ask
Which type of reflection causes light rays to be reflected in all directions?
Why do we see things when light is reflected?
Which colour of light is reflected by a secondary coloured surface?
How do you know if a light is reflected?
What happens if reflected light is scattered in all directions?
What is diffuse reflection?
Year 11. •. AQA. •. Higher. Reflection of light (including specular and diffuse) I can recognise, draw and describe how light and other waves can reflect from different surfaces, using rays and wavefronts. Download all resources. Share activities with pupils. Slide deck. Lesson details. Video. Worksheet. Starter quiz. Exit quiz. Slide deck.
