Crystal Thought Condenser (Version 2)

Description

Effect: A spectator selects a card from an ordinary deck of playing cards. The performer displays a small solid crystal cube which he explains will condense and focus thought rays just like a lens focuses light rays. The cube Is held between finger and thumb, right under the spectator’s nose, and being completely transparent, the spectators can see there is nothing in the cube.

The spectator is asked to concentrate intently on the selected card as the performer moves the cube forward and backward, twisting it to bring It into  focus. Suddenly an image of the selected card appears in the center of the cube! And it can be clearly seen by the spectator. Then, just as suddenly, it vanishes! You can toss the cube out for examination if you wish.

You could also make the image of a selected number, word, design, etc. appear in the cube instead of a playing card.