TIL that the "holograms" used to bring Tupac and Michael Jackson back to life on stage were actually a 160-year-old Victorian theater trick called "Pepper’s Ghost." The same principle is used in modern teleprompters-reflecting an image off a hidden screen onto a pane of glass

https://en.wikipedia.org/wiki/Pepper%27s_ghost
#til #todayilearned
https://www.reddit.com/r/todayilearned/comments/1rwu1fg/til_that_the_holograms_used_to_bring_tupac_and/