Ví dụ công khai
The Kaleidoscope (from καλος beautiful, ειδος a form, and σκοπεω to see) is an instrument for creating and exhibiting an infinite variety of beautiful forms, and is constructed in such a manner as either to please the eye, by an ever-varying succession of splendid tints and symmetrical forms, or to enable the observer to render permanent such as may appear most appropriate for any of the numerous branches of the ornamental arts.