How Kaleidoscopes Work
The word kaleidoscope comes from Greek words meaning “beautiful form to see.” Some are so beautiful and rare that they’ve become prized as collectable objects. A kaleidoscope’s beautiful forms, are created by an assembly of mirrors, angles and ordinary objects working in a very scientific way.
A kaleidoscope is made of two or more mirrors or reflective surfaces positioned at an angle to each other, usually forming a V-shape or a triangle. The case is the body surrounding the mirror assembly. A collection of objects is positioned at one end of the mirrors, and there’s an eyehole at the other end.
What you see when you look through that eyehole will never be exactly the same twice. While the container holding the objects is usually as large as the kaleidoscope tube, only the portion of the objects that fall within the space of the triangle within the object holder is reflected.