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Velasco's team employs a visual model often referred to as a "billiard" to illustrate the classical mechanics of linear versus chaotic systems.

In classical mechanics, a particle must have enough energy to overcome an energy barrier for a reaction to occur.

If successful, achieving entanglement of levitated nano- and micro-particles could narrow the gap between the quantum world and everyday classical mechanics.

To do this, felines exploit the physical laws of classical mechanics: by placing their front paws close to their body, they reduce their moment of inertia.

Macroscopic objects made of very many atoms, on the other hand, normally obey classical mechanics: they cannot assume two contradictory states simultaneously.