Toy designed for older audiences, such as teenagers or adults, demonstrate advanced concepts. Newton's cradle, a desk toy designed by Simon Prebble, demonstrates the conservation of momentum and energy. Not all toys are appropriate for all ages of children. Even some toys which are marketed for a specific age range can even harm the development of children in that range. "Age compression" is a toy industry term that describes the modern trend of children moving through play stages faster than they did in the past. Children have a desire to progress to more complex toys at a faster pace, girls in
Spheres (TV series) is a mysterious girl who was found in the Antarctic after the destruction of Spheres. One day Asten, the chairman of Sphere Union, who has a burning ambition to control the world, sent his followers to keep watch on Na Yeon. Na Yeon and her friends try to keep three artifacts, the keys to conquer the world, from the hands of Sphere Union. In the Italian opening, Santo Verduci composed for TV show Contactoons. Spheres (TV series) Spheres () is a Korean animated television series. It is a product of the major broadcaster Munhwa Broadcasting Corporation, and the animation was