Infinity symbol in bookbinding to indicate that a book is printed on acid-free paper and will therefore be long-lasting. In modern mysticism, the infinity symbol has become identified with a variation of the ouroboros, an ancient image of a snake eating its own tail that has also come to symbolize the infinite, and the ouroboros is sometimes drawn in figure-eight form to reflect this identification, rather than in its more traditional circular form. In the works of Vladimir Nabokov, including "The Gift" and "Pale Fire", the figure-eight shape is used symbolically to refer to the Möbius strip and the infinite, for instance
Tower Infinity of illumination are used to achieve different degrees of 'invisibility'. Because of the arrangement of the LED screens, the tower will appear invisible from only certain points distributed around the tower, ranging from near the tower to Seoul Bridge, about away. The screens will be so arranged that the tower will be visible from high altitudes, such as to airplanes and birds. Tower Infinity will be used primarily for entertainment and leisure purpose with a 4D theater, restaurants, a water park, landscaped gardens and the third-highest observation deck in the world. When the tower invisible cloak is turned off the