Light travels in straight lines. If an object is transparent, it means you can see through the object clearly as light passes through it. There are objects that let some light through, but not enough ...

Light can pass straight through transparent close transparentA material, object or substance which allows light to pass through it so that an image can be clearly seen through it. materials.

Abstract: Time-of-flight (ToF) cameras, widely used in commercial applications such as augmented reality and autonomous driving, measure depth by analyzing the flight time of emitted laser signals.