LIGHT vocabulary Crossword

the space or shape formed when two lines or surfaces meet each other
a human-made source of light
light produced by chemical reactions inside the bodies of living creatures
light resulting from chemical action and NOT involving heat
curving inward
curving outward
the process in which invisible light is absorbed by the particles of an object, which then gives off some of this energy as visible light
how something looks or might look; the likeness of something
the emission of visible light by a hot object
an object that can be heated to such a high temperature that it emits visible light
the ray of light that strikes a reflecting or refracting surface
the brightness of light
a curved piece of transparent material, usually glass or plastic
the form of energy we can see
giving off its own light
a non-human made source of light
a substance that does not give off its own light
a reference line drawn perpendicular to a reflecting surface at the point where a ray strikes the surface
not allowing any light to pass through
light that comes from exposure to and removal from a source of radiation
a flat or level surface
to send out energy in the form of waves or rays
a type of powerful energy that is produced by radioactive substance and nuclear reactions
a single line or narrow beam of light that comes from a light source and that may bounce off a surface that it strikes
the casting back of light from a surface
the bending of light when it travels from one substance to another
the group of colours that a ray of light can be separated into
allowing some light to pass through
allowing light to pass through
an image located where reflected rays only seem to originate
stopping of light energy