Deflection

In physics deflection is the event where an object collides and bounces against a plane surface.

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In such collisions involving a sphere and a plane, the collision angle formed with the surface normal (the incidental angle α) must equal the bounce angle (the accidental angle β), lpha = eta

Physics: Physics (from the Greek, φυσικός (phusikos), "natural", and φύσις (phusis), "nature") is the science of the natural world in the broadest sense, dealing with matter and energy and the fundamental forces of nature that govern the interaction...

Bounce: The term Bounce has several meanings:...

Sphere: :For other uses, see sphere (disambiguation)....