optics #2 oh yes Flashcards
how is light produced
electrons change orbital levels and energy is emitted? i dont remember learning this one were gonna have to wing this one but its just multiple chice.
uhhhh its produced by the sun
what is diffused reflection
when lgt is being reflected off of a rigid surface and the reflection is not clear
what is specular reflection
when light is reflected off of a smooth surface and makes a perfect image like peaceful ponds in cool pics
what is the electromagnetic spectrum
range of frequencies of types of radiation and their wavelengths
how do you draw an image in a plane mirror
measure the length from the object to the mirror and draw the points for the image.
draw a straight line from the eye to the points of the virtual image
draw rays from te object and conect them at the mirror with the eye rays
add arrows to how which way the light is going (arrows into eyes)
what is refraction
when light enters a new medum and slows down or speeds up
when the speed of light slows down where does it go?
closer to the normal
how do you draw an image in a concave mirror that is not at F or inside of F
draw a light ray from the top of the object parallel to the principal axis and reflect it through the focus
draw a light ray from the top of the object through the focus. reflects off the mirror parallel to the axis
where lines meet is where the top of the object is.
make sure to draw arrows to show where it is going
how to draw an image what is located inside F
draw a line from C to the top of the object and beyond past the mirror
draw a line from the top of the object prallel to the axis and reflect it into the focus, extend the line where it hits the mirror and hit the other line. this is where your virtual image is.
dont forget to draw arrows!
is there an image in concave mirrors when the object is at F
nope, lines parallel
how do you find images in convex mirrors
draw a ray parallel to the axis and reflected as it it had come through the focus.
draw a line from the top of the object towards the focus and reflect it parallel to the axis when it hits the mirror. continue the reflected line until it hits the first line you drew. remember arrows.
what is the salt for convex mirrors always?
smaller, upright, behind mirror, virtual.
what is 1.00 on the index of refraction?
vacuum
how do you draw an image from a converging lens
draw a line pallel to the axis into the lens and trough F
draw a line from the top of the object through the lens at the point where the axis and lens meet, continue through until you have another intersection.
do you have an image at F in convex lenses?
no.
