RFI-EMI-GUY
Member
- Joined
- Dec 22, 2013
- Messages
- 6,877
"Light spots and shadows
If a laser beam is swept across a distant object, the spot of laser light can easily be made to move across the object at a speed greater than c.[10] Similarly, a shadow projected onto a distant object can be made to move across the object faster than c.[10] In neither case does the light travel from the source to the object faster than c, nor does any information travel faster than light.[10][11][12]"Faster-than-light - Wikipedia
en.wikipedia.org