Light Behavior
This type of wave does not require a medium to travel.
What is an electromagnetic wave?
White light is made up of these seven visible colors.
What is the visible spectrum (ROYGBIV)?
The law stating that the angle of incidence equals this.
What is the angle of reflection?
The bending of light as it passes from one medium to another is called this.
What is refraction?
This device uses lenses to make distant objects appear closer.
What is a telescope?
Light travels at this approximate speed in a vacuum.
What is 3.0 × 10⁸ meters per second?
This happens when white light is separated into colors as it passes through a prism.
What is dispersion?
This type of mirror produces an upright, virtual image and is flat.
What is a plane mirror?
Light slows down when it enters this type of material compared to air.
What is a denser medium?
This instrument uses lenses to magnify very small objects.
What is a microscope?
The bouncing of light off a surface is called this.
What is reflection?
These are the three primary colors of light.
What are red, green, and blue?
This type of mirror curves inward and can produce real images.
What is a concave mirror?
This type of lens is thicker in the middle and converges light rays.
What is a convex (converging) lens?
This common device uses lenses to correct vision problems.
What are eyeglasses?
Light spreading out after passing through a narrow opening is called this.
What is diffraction?
When all colors of light are combined, the result is this.
What is white light?
This type of mirror curves outward and produces smaller, virtual images.
What is a convex mirror?
This type of lens spreads light rays apart.
What is a concave (diverging) lens?
This optical instrument uses mirrors to view objects not in direct line of sight.
What is a periscope?
When light waves overlap and combine, producing bright and dark areas, this occurs.
What is interference?
An object appears red because it does this with red light.
What is reflects red light (and absorbs other colors)?
The imaginary line perpendicular to a surface at the point of reflection is called this.
What is the normal?
This term describes how much a material slows light compared to a vacuum.
What is the index of refraction?
This part of the eye focuses light onto the retina.
What is the lens?