Waves Properties Flashcards
ALL WAVES.
Reflected.
Diffracted.
Refracted.
What happens when waves arrive at an obstacle?
Their direction of travel can be changed.
This happens by reflection or by refraction or diffraction.
What is reflection?
Reflection of light is what allows us to see objects.
Light counces of them into our eyes.
When light travelling in the same direction reflects from an uneven surface such as a piece of paper, the light reflects off at different angles.
When light travelling in the same direction reflects from an even surface then its reflected at the same angle get a clear reflection.
What is the normal?
An imaginary line that’s perpendicular to the surface at the point of incidence.
Angle of incidence =
Angle of reflection.
Points to include when drawing a ray diagram from an image in a plane mirror.
1 - the image is the same size as the object
2 - As far behind the mirror as the object is infront.
3- image is virtual and upright.
4- image is laterally inverted left and right sides swapped.
Why is the image in the plane mirror virtual?
Because the object appears to be behind the mirror.
