Incident photon

photon /pho·ton/ (fo´ton) a particle (quantum) of radiant energy.

pho·ton (f

)

The quantum of electromagnetic energy, generally regarded as a discrete particle having zero mass, no electric charge, and an indefinitely long lifetime.

pho·tonic adj.

Photon

A light particle.

Mentioned in: Positron Emission Tomography (PET)

photon

[fō′ton]

Etymology: Gk, phos, light

the smallest quantity of electromagnetic energy. It has no mass and no charge but travels at the speed of light. Photons may occur in the form of x-rays, gamma rays, or quanta of light. The energy (E) of a photon is expressed as the product of its frequency (v) and Planck's constant (h), as in the equation E = hv. X-ray photons occur in frequencies of 10¹⁸ to 10²¹ Hz and energies that range upward from 1 KeV.

photon [fo´ton]

a discrete particle (quantum) of radiant energy.

photon (fō´ton),

n a bullet or quantum of electromagnetic radiant energy emitted and propagated from various types of radiation sources. The term should not be used alone but should be qualified by terms that will clarify the type of energy (e.g., light photon, radiographic photon).

photon

a particle (quantum) of radiant energy.

x-ray photon

a particle of x-ray energy.

photon

The basic unit of radiant energy defined by the equation

E = hν

where h is Planck's constant (6.62 ✕ 10⁻³⁴ joule ✕ second), ν the frequency of the light and E the energy difference carried away by the emission of a single photon of light. The term photon usually refers to visible light whereas the term quantum refers to other electromagnetic radiations. See quantum theory; wave theory; troland.

Mentioned in	?		References in periodicals archive	?		Medical browser	?		Full browser	?
backscatter radiation bone densitometry corpuscular radiation Dwayne-Hunt law electromagnetic radiation excitation excited state gamma radiation ionizing radiation Planck's constant Positron Emission Tomography (PET) quantum radiation radiation exposure radiation protection radiation sickness radiation therapy scattered radiation scattering	But in a Avalanche photodiode, a few incident photons result in many carriers being produced and an increased external current. How to Design a High Performance Optical Receiver? by Colin Yao / Computers and Internet community Each material is assigned a probability, p, that an incident photon will remove that small grid of material. Monte Carlo approach to estimating the photodegradation of polymer ... by Croll, Stuart / JCT Research The full thickness of the aperture plate and associated fixtures is large enough (11) to mostly stop the incident photons, so that the penetration of the primary photons (12) through the inner cylindrical surface of the aperture is of primary concern. New national air-kerma-strength standards for [.sup.125]I and ... by Coursey, Bert M. / Journal of Research of the National Institute of Standards and Technology	incandescence incandescent incapable of making an informed decision incapacitated health care provider incapacitating agents incapacity incarcerate incarcerated incarcerated hernia incarceration incardia valve system incensing incentive arrangement incentive plan incentive program Incentive spirometer incentive spirometry inception INCERT incest incestuous INCI incidence incidence rate incident Incident photon incident point incident report incident reporting incident to incidental additives Incidental Finding incidental parasite Incidentaloma incineration incipient incipient carious lesion incipient dental caries incisal incisal angle incisal guide incisal guide angle incisal guide pin incise incised incised wound incision incision & drainage incision biopsy incision site care incisional biopsy	Incident Learning and Prevention Incident light Incident Light Polarization Microscopy Incident Linked Multimedia Incident Management Activity Incident Management and Crisis Resolution Incident Management Assist Team Incident Management Center Incident Management Decision Support System Incident Management Intervention Model Incident Management Mission Diagnostic Incident Management Officer Incident Management Plan Incident Management Situation Report Incident Management System Incident Management System Training Incident Management Systems Division Incident Management Team Incident Management Unified Command Incident Management, Analysis and Reporting System Incident Management/Consequence Management Incident Meteorologist Incident Object Description and Exchange Format Incident of Ownership Incident photon Incident Photon to Current Efficiency Incident Photosynthetically Active Radiation incident point incident power Incident Prevention System Incident Process Management Incident proposition Incident Qualifications and Certification System Incident Record incident report incident report incident report incident report incident report incident report Incident Report Book Incident Report Form incident reporting incident reporting incident reporting incident reporting Incident Reporting and Investigation Centre Incident Reporting and Tracking System Incident Reporting and Trending System Incident Reporting Procedure Incident Reporting System Incident Reporting System for Research Reactors Incident Resolved No Further Action Needed incident response Incident Response Analysis Team

Mentioned in

References in periodicals archive

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backscatter radiation
bone densitometry
corpuscular radiation
Dwayne-Hunt law
electromagnetic radiation
excitation
excited state
gamma radiation
ionizing radiation
Planck's constant
Positron Emission Tomography (PET)
quantum
radiation
radiation exposure
radiation protection
radiation sickness
radiation therapy
scattered radiation
scattering

But in a Avalanche photodiode, a few incident photons result in many carriers being produced and an increased external current.

How to Design a High Performance Optical Receiver? by Colin Yao / Computers and Internet community

Each material is assigned a probability, p, that an incident photon will remove that small grid of material.

Monte Carlo approach to estimating the photodegradation of polymer ... by Croll, Stuart / JCT Research

The full thickness of the aperture plate and associated fixtures is large enough (11) to mostly stop the incident photons, so that the penetration of the primary photons (12) through the inner cylindrical surface of the aperture is of primary concern.

New national air-kerma-strength standards for [.sup.125]I and ... by Coursey, Bert M. / Journal of Research of the National Institute of Standards and Technology

Incident photon

Incident Photon to Current Efficiency
Incident Photosynthetically Active Radiation
incident point
incident power
Incident Prevention System
Incident Process Management
Incident proposition
Incident Qualifications and Certification System
Incident Record
incident report
incident report
incident report
incident report
incident report
incident report
Incident Report Book
Incident Report Form
incident reporting
incident reporting
incident reporting
incident reporting
Incident Reporting and Investigation Centre
Incident Reporting and Tracking System
Incident Reporting and Trending System
Incident Reporting Procedure
Incident Reporting System
Incident Reporting System for Research Reactors
Incident Resolved No Further Action Needed
incident response
Incident Response Analysis Team

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