How light enables us to see? Is there any alternative of light?
In: Physics
Light enables us to see because our eyes are only capable of processing light, there is no alternative for humans. BUT, other animals have echolocation (bats, whales, …) so they can perceive their environment using sound. It’s not exactly the same as “seeing”, as bats also have eyes that see light like ours.
Humans also have science, so we can translate many other things, even sound, into things we can see by using computers to process the data from that other source and light up a screen with light our eyes can see.
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