Photonics

Front

Transparent

Back

A material that lets most or all light pass through it

Front

Translucent

Back

A material that lets only some (a little) light waves pass through

Front

Opaque

Back

A material that lets no light waves pass through it

Front

Concave lens

Back

A lens that curves inward (caves in) and spreads light apart

Front

Convex lens

Back

A lens that bulges outward and brings light together (makes an x)

Front

Refraction

Back

A bending of waves as they travel through different media, causing the image to look different

Front

Reflection

Back

The change in the direction of light waves after they bounce off a surface

Front

Amplitude

Back

The height of a wave, affects the volume/loudness of a sound

Front

Frequency

Back

The number of waves per second (how often the waves come), affects the pitch of a sound

Front

Decibels

Back

Units for the amplitude (loudness) of a sound