Kaleidoscope, kuh LY duh skohp, is a small tube in which you can see beautiful colors and designs. Most kaleidoscopes are from 2 to 3 inches (5 to 8 centimeters) in diameter and about 10 inches (25 centimeters) long. Both ends are closed, but one end has a small peephole through which you can look into the kaleidoscope.

