The shift of a quantum energy level in an atom owing to the atom not residing in an environment at absolute zero temperature. Objects emit radiation whose wavelength depends on the object's temperature. At room temperature, the wavelengths emitted are in the infrared region of the electromagnetic spectrum. Even in the most remote section of intergalactic space, an isolated atom is still subject to radiation in the form of the cosmic microwave background. Uncertainties in the blackbody radiation shift impose limits on the accuracy of the best atomic clocks.
Subscribe to A Quantum Bit
Quantum physics began with revolutionary discoveries in the early twentieth century and continues to be central in today’s physics research. Learn about quantum physics, bit by bit. From definitions to the latest research, this is your portal. Subscribe to receive regular emails from the quantum world. Previous Issues...
Sign Up Now
Sign up to receive A Quantum Bit in your email!