laser
transparent
Transparency.
Hardly any passes through, that's why its called opaque.
Transparent objects allow light to pass through them in straight lines
Absorption.
Light usually passes through a transparent object. Similarly, light passes through the translucent objects but people cannot see through it.
When light passes through an object, we say it is transmitted. Transparent objects transmit a lot of light. basically it is called shadow
transparent
Intersection
transparent
Transparency.
It is called "transparent".
light passes in straight line
When light changes direction as it passes through a boundary.
It is a straight line equation in the form of: y = x
The object will be invisible, unless of course it is refracted, in which case the refraction will scatter the light. And light will refract through any change in material medium.
Cameras