SP5 - Light and the Electromagnetic Spectrum

• Diffuse Reflection is when light is reflected in different directions off of a bumpy surface.
• Specular reflection is when smooth surfaces reflect light more evenly.
• White light is a mix of colours that become visible when passing through a prism.
• Filters are pieces of transparent material that absorb some colours in white light.
• Convex lenses make rays of light converge. Rays on the edges of the lens refract more than rays on the centre.
• Concave lenses make rays of light diverge.
• Ultraviolet light has a frequency greater than violet that arent visible to human eyes.
• Infrared light has a frequency lower than red that arent visible to human eyes.
• All EM waves travel at the speed of 3 ×10^8 m/s in a vacuum.
• Angle of Incidence = Angle of Reflection
• Total Internal Reflection is the reflection of light rays when it reaches a less dense medium where the angle of incidence is greater than the critical angle.
• The critical angle is the largest angle of incidence where the light rays are refracted and not reflected.