In physics, circular motion is a movement of an object along the circumference of a circle or rotation along a circular path. It can be uniform, with constant angular rate of rotation and constant speed, or non-uniform with a changing rate of rotation. The rotation around a fixed axis of a three-dimensional body involves circular motion of its parts. The equations of motion describe the movement of the center of mass of a body.
on futuristic putters: Although there is a standard length for conventional putters (men's are 35 inches - 90cm, and women's are 33-34 inches - 84-86cm), don't be afraid of altering the length of your putter if you feel uncomfortable with it. Some putters are light and others are heavier.
There are architectural standards for almost anything you can imagine. The standard height for a counter top is 36. The best height for a workbench that will only be used by you may be higher or lower than that. The nature of your work will also be a factor. I like a 32 height for woodwork but have risers that allow me to raise it to 42 for the detailed work that involved lots of bending over.