Emission theory

Definitions

  • Webster's Revised Unabridged Dictionary
    • Emission theory (Physics) the theory of Newton, regarding light as consisting of emitted particles or corpuscles. See Corpuscular theory, under Corpuscular.
    • ***
Chambers's Twentieth Century Dictionary
    • Emission theory the theory that all luminous bodies emit with equal velocities a number of elastic corpuscles, which travel in straight lines, are reflected, and are refracted
    • ***

Etymology

Chambers's Twentieth Century Dictionary
L. emittĕre, emissume, out of, mittĕre, to send.

Usage

In literature:

How, then, did it fare with the Emission Theory when the deductions from it were brought face to face with natural phenomena?
"Six Lectures on Light" by John Tyndall
The "forward emission" theory assumes the existence of a current of air, issuing from the vocal cords as a tone.
"The Psychology of Singing" by David C. Taylor
So that the emission theory harmonizes with the wave theory in regard to reflection.
"Aether and Gravitation" by William George Hooper
This emission theory of light was abandoned in favour of Huygens' undulatory theory.
"The Mechanism of Life" by Stéphane Leduc
***

In news:

In theory, this reduces greenhouse gas emissions and is good for the environment.
***

In science:

There is no ready form of the theory of gravitational wave emission from random media that could be immediately applied for preheating.
Theory and Numerics of Gravitational Waves from Preheating after Inflation
One might in general expect emission of a few particles (or, if string theory is right, excited string states) with energies E ∼ MD and high transverse momenta.
High-energy black hole production
Agarwal, Quantum Statistical Theories of Spontaneous Emission and Their Relation to Other Approaches, Springer Tracts in Modern Physics: Quantum Optics (Springer-Verlag, Berlin, 1974), Pg. 94. M.
Photon-Photon Correlations as a Probe of Vacuum Induced Coherence Effects
This behaviour is clearly not consistent with the steady decline predicted by accretion disc theory (Lynden-Bell & Pringle, 1974; Hartmann et al., 1998, also the chapter by Lodato in this volume); instead the inner dust observations show an extremely rapid “shut-off ” in the disc emission.
From discs to planetesimals I: evolution of gas and dust discs
To be precise, the role of the mass is to regulate small angle emissions that would otherwise diverge in a massless theory; see Ref. [247] for a detailed exposition.
The NLO multileg working group: summary report
Even at that separation, however, the orbital evolution of the binary system caused by the emission of gravitational waves is affected, in a scalar-tensor theory, by the coupling of matter to the scalar field, which occurs in a strong gravitational field.
Probes and Tests of Strong-Field Gravity with Observations in the Electromagnetic Spectrum
In any hidden variable theory, one may expect emission of radiation by Lorentz damping, i. e. accelerated electrons.
Where Bell went wrong
The central equation of this effective theory is a functional renormalization group equation, known as ‘JIMWLK’ (from Jalilian-Marian, Iancu, McLerran, Weigert, Leonidov, and Kovner), which shows how the CGC weight function gets built via soft gluon emission in the background of a strong color field.
Multiparticle Dynamics in the LHC Era
It is a theory describing the emission mechanisms of GRBs regardless the source progenitor (see next section).
Statistical Analysis of the Observable Data of Gamma-Ray Bursts
The Spontaneous Emission by free electrons phenomenon arises from the direct interaction of a free electron and a fluctuating scalar field, postulated in the framework of Spontaneous Collapse theories as a signature of realisation of the system wave function collapse which solves the ”measurement” problem .
Mini-Proceedings ECT*: Speakable in quantum mechanics: atomic, nuclear and subnuclear physics tests
However, discrepancies between theory and experiment (and in some case even between different experiments) are still present for the emission spectra involving protons [28, 29].
Strangeness nuclear physics: a critical review on selected topics
As discussed in the Introduction, a theory of gravity which predicts a violation of SEP is also expected to predict the emission of dipolar gravitational radiation in asymmetric binary systems, like pulsar-WD binaries .
Tests of the universality of free fall for strongly self-gravitating bodies with radio pulsars
Fung, Microwave Remote Sensing Active and Passive: Radar Remote Sensing and Surface Scattering and Emission Theory.
Hypothesis Testing in Speckled Data with Stochastic Distances
The important difference in gravitational wave emission within this theory is the presence of dipolar gravitational radiation.
Tests of General Relativity and Alternative theories of gravity using Gravitational Wave observations
Taking into account that in the small x region the multi-gluon emission takes place as a two dimensional random walk in the transverse momentum, Kirschner, Lipatov and Szymanowski propose to describe the multi-gluon emission by an effective field theory in two dimension.
QCD and high energy hadronic interaction: Summary talk (theory)
***