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Diffuse Reflection

Revision as of 10:59, 2 November 2018 by NRJC (talk | contribs)

Key Stage 2

Meaning

Reflection is when light bounces off an object and goes into our eyes.

Singular Noun: Reflection
Plural Noun: Reflections
Verb: To reflect
Adjective: Reflective

About Reflection

To see an object light must come from the object and go into our eyes. Most objects do not make their own light, so instead they reflect the light that is made by something else, like The Sun or a light bulb.
In a dark room you cannot see any objects because there is no light to reflect off the objects.
When you turn on a light bulb in a dark room the light travels from the light bulb to the objects in the room. The light then reflects off the objects and goes into your eyes. That is how we can see the objects.
LightDarkRoom.png
LightManBoyBulb.png
No-one can see because there is no light to be reflected off anything. The man can see the light bulb because light from the bulb goes into the man's eyes. The boy cannot see the light bulb because his eyes are closed.
LightBulbBoyMan.png
LightBulbTableMan.png
The man can see the boy because light from the bulb is reflected off the boy and goes into the man's eyes. The man can see the table because light from the bulb reflects off the table and goes into the man's eyes.

Key Stage 3

Meaning

Diffuse Reflection is when light bounces off a dull surface in different directions.

About Diffuse Reflection

Diffuse Reflection happens from a rough surface that has many tiny bumps and dips.
Diffuse Reflection is how we see all objects.
Diffuse Reflection does not produce an image.
DiffuseReflectionDiagram.png
Diffuse Reflection happens from a rough surface. Parallel incoming rays are reflected in different directions. This known as scattering.