Questions with the keyword 'hologram'

• how do holograms work?? by abdelmadjidzinet Comments: (No comments so far )
• We saw a 2D image on a CD case and a 2D image on a mist screen. But where was the Hologram, a 3D image that changes as by ModShane Comments: (No comments so far )
• Can you explain how the hologram and cd case works again? I’d really like to try it! by ModShane Comments: (No comments so far )