An illusion transmitter: it uses mirrors to transmit 3-D images over distances (still used by NASA today!)
Are you sure you want to hide this comment? It will become hidden in your post, but will still be visible via the comment's permalink.
Hide child comments as well
Confirm
For further actions, you may consider blocking this person and/or reporting abuse
An illusion transmitter: it uses mirrors to transmit 3-D images over distances (still used by NASA today!)