• Pendulum ball decoration:can be a funny present to your friends, family and ,newton's ball
• Newton's: for decorating in the office, home and other indoor places,pendulum ball decoration
• Dynamics ornament:it is a very funny decompression that a ball can be used to hit other balls and swing,pendulum ball decoration
• Newton's cradle adornment:as a creative decompression to amuse people,pendulum ball decoration
• Newton's ball:not only demonstrates a pendulum, but also shows the laws of conservation of momentum and energy,pendulum ball decoration