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Acronyms that contain the term spontaneous emission 

What does spontaneous emission mean? This page is about the various possible meanings of the acronym, abbreviation, shorthand or slang term: spontaneous emission.

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PET

Positron Emission Tomography

Medical » Laboratory

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PET

Positron Emission Tomography

Governmental » Military

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PET

Positron Emission Tomography

Medical » Oncology

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PET

Positron Emission Tomography

Medical » Physiology

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EF

Emission Factor

Academic & Science » Electronics

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PE

Positron Emission

Academic & Science » Physics

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CEMS

Continuous Emission Monitoring System

Governmental » Environmental

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AE

Acoustic Emission

Governmental » NASA

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LASER

Light Amplification by Stimulated Emission of Radiation

Academic & Science » Physics

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LASER

Light Amplification by Stimulated Emission of Radiation

Academic & Science » Electronics

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LASER

Light Amplification by Stimulated Emission of Radiation

Academic & Science » Chemistry

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SE

Stimulated Emission

Academic & Science » Physics

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LASER

Light Amplification by Stimulated Emission of Radiation

Governmental » Military

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EF

Emission Factor

Governmental » Environmental

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LE

Low Emission

Governmental » Transportation

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ASE

Amplified Spontaneous Emission

Academic & Science » Electronics

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ASTER

Advanced Spaceborne Thermal Emission and Reflection

Governmental » NASA

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ASTER

Advanced Spaceborne Thermal Emission and Reflection Radiometer

Academic & Science » Meteorology

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LEV

Low Emission Vehicle

Governmental » Transportation

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AE

Atomic Emission

Academic & Science » Chemistry

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ZEV

Zero Emission Vehicle

Governmental » Transportation

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SPECT

Single-Photon Emission Computed Tomography

Medical » Laboratory

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PIXE

Particle Induced X-ray Emission

Academic & Science » Physics

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LAER

Lowest Achievable Emission Rate

Governmental » Environmental

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ULEV

Ultra Low Emission Vehicle

Governmental » Military

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What does spontaneous emission mean?

Spontaneous emission
Spontaneous emission is the process by which a quantum system such as an atom, molecule, nanocrystal or nucleus in an excited state undergoes a transition to a state with a lower energy and emits quanta of energy. Light or luminescence from an atom is a fundamental process that plays an essential role in many phenomena in nature and forms the basis of many applications, such as fluorescent tubes, older television screens, plasma display panels, lasers, and light emitting diodes. Lasers start by spontaneous emission, and then normal continuous operation works by stimulated emission.

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