Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Welcome! The TrekBBS is the number one place to chat about Star Trek with like-minded fans.
If you are not already a member then please register an account and join in the discussion!
Well, the short story is that they bounce off (are reflected by) objects and then the human eye is able to detect the reflected ones (it actually has to do with the wave/particle duality of light -but somehow I don't see (no pun intended -well; actually it is a 'bad' pun!) that in your question-