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It is called transparent object I think
You would call such an object opaque.
opaque objects
A two way mirror, or as police call it, the "magic mirror".
Nothing comes through. A red light emits no blue light, and a blue filter allows only blue light to pass ... that's why when you look at it, you say to yourself "Hey! That filter looks blue. I'll call it a 'blue filter'."
An object through which light cannot pass is known as opaque.
You would call such an object opaque.
It is called transparent object I think
opaque objects
It is called "transparent".
An object that allows some light to pass (but not all light to pass) is called "translucent". Examples include tracing paper and frosted glass.
Objects that allow most light to pass through are described as transparent. In contrast, translucent objects allow some light to pass through, but don't let you see objects. Opaque objects allow no light to pass through.
A two way mirror, or as police call it, the "magic mirror".
It's called 'opaque' (pronounced oh-pay-k).
Such an object is electrically conductive.
We call it 'wingardiem leviosa'
a luminous object