science
pythagoras
believed that beams of light came from the person’s eye in a straight line.
Euclid discovered what
The Angle of Incidence = The Angle of Reflection
Al-Haytham
suggested that light bounces
off objects and then travels to the
eye where the sensation of sight
occurs. Therefore, light travels to the eye
Sir Isaac Newton
showed that white light is actually a mixture of different colors of light
whats the speed of light?
299 798km/s
300 000km/s
formula for speed
speed =distance / time
what are the 4 main properties of light?
light travels in a straight line
light can be reflected
light can bend(in a different medium)
light is a form of energy
convex lens
lens that is thicker in the middle than the edges
concave
lens that is thinner in the middle than at the edges
optical Device
is any technology that uses light
(creates, manipulates, or measures electromagnetic
radiation)
Microscopes
light source shines through the specimen. Then, a large image is produced that you can see by looking through the eyepiece
Refracting Telescopes
The objective lens if larger,
gathers the light, focuses the
rays towards the eyepieces
has 2 lens⭐️
Reflecting Telescope
Uses a large mirror
that curves inwards
•A second mirror
reflects the image
into the eyepieces