vocab
Something that is opaque is not transparent
Opaque
key vocabulary related to the concept of "filter" includes terms like filtration, filter paper, and purification
Filter
something that allows light to pass through, but scatters it, making objects on the other side not clearly visible
Translucent
a colored substance that selectively absorbs certain wavelengths of light and reflects others
Pigment
clear and easily seen through
Transparent
a dimensionless number that describes how light travels through a medium
Index of refraction
an optical illusion where an object, like a ship, appears to be located in a different
Mirage