We call these translucent or semi-transparent. Objects that let no light through are opaque. The closer to the light source an object is, the bigger the shadow will be. This is because the object ...

Discover how iron's opacity in the sun challenges scientific models, and how researchers are working to resolve the ...

Mundane objects can have metadata embedded into them ... The team used a specialty filament from vendor 3dk.berlin that looks nearly opaque in the visible spectrum, but transmits roughly 45% ...