![]() When we solve x 2 = 4, x can either be 2 or –2. In mathematical terms, superposition can be thought of as an equation that has more than one solution. Schrödinger intended the example to demonstrate what he saw as the absurdity of quantum science. Schrödinger proposed that, at the end of the hour, the cat could be said to be both alive and dead, in a superposition of states until the box is opened, and that the act of observation randomly determines whether the cat is alive or dead. Traditional descriptions have used the analogy of a coin that is heads up and tails up at the same time, or the famous Schrödinger's cat thought experiment, in which physicist Erwin Schrödinger imagined placing a cat in a sealed box along with a poisonous substance that has an equal chance of killing the cat-or not-within an hour. The concept of quantum superposition might be difficult to visualize. Understanding superposition may help to advance quantum technology such as quantum computers. An electron might be said to be in a superposition of two different velocities or in two places at once. When an electron is in superposition, its different states can be thought of as separate outcomes, each with a particular probability of being observed. ![]() The equations might provide information on the probability of an electron moving at a specific speed or residing in a certain location. ![]() They are expressed as equations that describe the probabilities of an object existing in a given state or having a particular property. ![]() While waves on the surface of a pond are formed by the movement of water, quantum waves are mathematical. ![]()
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