Question

What is quantum theory?

a
A body of work in physics that explains the way the universe works on the largest scales.
The theory of quantums.
A body of work in physics that explains the way the universe works on the tiniest scales.
A body of work in physics that explains the physics surrounding really fast-moving large objects.
A picture of really tiny objects.

Answer 1

Quantum theory, also known as quantum mechanics, is a body of work in physics that explains the behavior of matter and energy on the tiniest scales.

Step-by-step explanation:

Quantum theory, also known as quantum mechanics, is a body of work in physics that explains the behavior of matter and energy on the tiniest scales. It describes the nature and properties of subatomic particles, as well as their interactions and behaviors. Quantum theory is essential in understanding phenomena such as the dual nature of light (wave-particle duality), quantized energy levels, and the uncertainty principle.

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