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Produced in hadronic collisions, a direct photon is any real photon which originates directly from an electromagnetic vertex in a quark-quark, quark-gluon
Direct_photon
Two-pass global illumination rendering algorithm
In computer graphics, photon mapping is a two-pass global illumination rendering algorithm developed by Henrik Wann Jensen between 1995 and 2001 that approximately
Photon_mapping
Branch of particle physics concerning interactions between two photons
particle-antiparticle pairs via direct pair production or (less often) by photon-photon scattering events that lower the incident photon energies. This renders
Two-photon_physics
Types of energy range in a solid where no electron states can exist
coefficient against photon energy, one can normally tell both what value the band gap is, and whether or not it is direct. For a direct band gap, the absorption
Direct_and_indirect_band_gaps
State of matter important in cosmology and particle physics
CERN announced the first direct observation of jet quenching, based on experiments with heavy-ion collisions. Thermal photons and dileptons are important
Quark–gluon_plasma
Technique for creating microscopic structures
wavelength. The main difference is the avoidance of photomasks. Instead, two-photon absorption is utilized to induce a change in the solubility of the resist
Multiphoton_lithography
1985 Japanese film
Odin: Photon Sailer Starlight (オーディーン 光子帆船スターライト, Odin - Koshi Hansen Starlight), also known as Odin: Starlight Mutiny, is a 1985 Japanese science fiction
Odin:_Photon_Sailer_Starlight
Space propulsion method using Sun radiation
Solar sails (also known as lightsails, light sails, and photon sails) are a method of spacecraft propulsion using radiation pressure exerted by sunlight
Solar_sail
Formulation of quantum mechanics
the quantum jump method which has no direct connection to monitoring output fields. When applied to direct photon detection the two theories produce equivalent
Quantum_Trajectory_Theory
Counting photons using a single-photon detector
Photon counting is a technique in which individual photons are counted using a single-photon detector (SPD). A single-photon detector emits a pulse of
Photon_counting
proton-proton interactions. Towards the end of its run it focused more on direct-photon and J/ψ production. The experiment is complementary to the UA1, UA2
UA6_experiment
Range of frequencies or wavelengths of electromagnetic radiation
high photon energy is able to ionize atoms, causing chemical reactions. Longer-wavelength radiation such as visible light is non-ionizing; the photons do
Electromagnetic_spectrum
Idealized physical body that absorbs all incident electromagnetic radiation
below billions of Kelvin, direct photon–photon interactions are usually negligible compared to interactions with matter. Photons are an example of an interacting
Black_body
Simultaneous absorption of two photons by a molecule
two-photon absorption (TPA or 2PA), also called two-photon excitation or non-linear absorption, is the simultaneous absorption of two photons of identical
Two-photon_absorption
Statistical study of photon counting
Photon statistics is the theoretical and experimental study of the statistical distributions produced in photon counting experiments, which use photodetectors
Photon_statistics
Physics phenomenon
emits a photon. He noted that the experimenter's choice of which measurement to make on the box would change what can be predicted about the photon, even
Quantum_entanglement
Measure of the size of atomic nuclei
a CP Violating Asymmetry Together with a Search for CP Violating E1 Direct Photon Emission in the Rare Decay KL → π+π−e+e−", Phys. Rev. Lett. 96:101801
Charge_radius
Penetrating form of electromagnetic radiation
radiation; they are distinguished by their different origins. Gamma ray photons have photon energy at the lower end from 104 eV to 107 eV; ultra-high-energy
Gamma_ray
American physicist
measuring the production of direct photons and lepton pairs. One of the experiments involved observation of direct photon production by hadrons during
Brad_Cox_(physicist)
Optical process
Photon upconversion (UC) is a process in which the sequential absorption of two or more photons leads to the emission of light at shorter wavelength than
Photon_upconversion
OMEGA spectrometer at CERN. The purpose of the experiment was to study direct photons produced in proton-proton and proton-pion collisions within a fixed
WA70_experiment
Direct nuclear-to-electric power scheme
Photon-intermediate direct energy conversion (PIDEC) is a scheme for direct conversion of nuclear power to electricity. PIDEC process is somewhat similar[citation
Photon-intermediate direct energy conversion
Photon-intermediate_direct_energy_conversion
Emission of electrons when electromagnetic radiation hits a material
material absorbs the energy of a photon and acquires more energy than its binding energy, it is likely to be ejected. If the photon energy is too low, the electron
Photoelectric_effect
Hypothetical force carrier particle connected to dark matter
dark photon (also hidden, heavy, para-, or secluded photon) is a hypothetical hidden sector particle, proposed as a force carrier similar to the photon of
Dark_photon
Type of rocket
A photon rocket is a rocket that uses thrust from the momentum of emitted photons (radiation pressure by emission) for its propulsion. Photon rockets
Photon_rocket
Difference between absorption and emission peak maxima
energy of the emitted photon is lower than that of the absorbed photon, representing the difference in energy of the two photons. The Stokes shift is primarily
Stokes_shift
Interference effect of two photons
The Hong–Ou–Mandel effect is a two-photon interference effect in quantum optics that was demonstrated in 1987 by Chung Ki Hong (Korean: 홍정기), Zheyu Jeff
Hong–Ou–Mandel_effect
Physics experiment in quantum mechanics
photons being randomly directed by such a beam splitter to go down two paths that are kept from interaction, it would seem that no photon can then interfere
Delayed-choice_quantum_eraser
Physical constant in quantum mechanics
fundamental physical constant of foundational importance in quantum mechanics: a photon's energy is equal to its frequency multiplied by the Planck constant, and
Planck_constant
Extremely accurate clock in development
A nuclear clock or nuclear optical clock is an atomic clock which uses photons from a nuclear isomeric transition as its reference frequency, instead
Nuclear_clock
Type of electronic noise
from the discrete nature of electric charge. Shot noise also occurs in photon counting in optical devices, where shot noise is associated with the particle
Shot_noise
Range of light usable for photosynthesis
corresponds more or less with the range of light visible to the human eye. Photons at shorter wavelengths tend to be so energetic that they can be damaging
Photosynthetically active radiation
Photosynthetically_active_radiation
Particle whose invariant mass is zero
the photon. The photon (carrier of electromagnetism) is one of two known gauge bosons thought to be massless. The photon is well-known from direct observation
Massless_particle
Form of electromagnetic radiation
in the range of 30 petahertz to 30 exahertz (3×1016 Hz to 3×1019 Hz) and photon energies in the range of 100 eV to 100 keV, respectively. X-rays were discovered
X-ray
Electron-positron production from two photons
They would then direct the photon beam from the first stage of the experiment through the centre of the hohlraum, causing the photons from the two sources
Breit–Wheeler_process
Quantum explanation of electromagnetic polarization
Photon polarization is the quantum mechanical description of the classical polarized sinusoidal plane electromagnetic wave. An individual photon can be
Photon_polarization
Scientific instruments
converted to photons, which are then transferred to the sensor of the CCD via a fiber optic plate. The main reason for this is that direct exposure to
Detectors for transmission electron microscopy
Detectors_for_transmission_electron_microscopy
Physical phenomenon
signatures of quantum effects. Multi-photon interference is a hallmark of optical non-classicality, as it provides a direct probe of the uniquely quantum properties
Three-photon_interference
Computed tomography technique
Photon-counting computed tomography (PCCT) is a form of X-ray computed tomography (CT) in which X-rays are detected using a photon-counting detector (PCD)
Photon-counting computed tomography
Photon-counting_computed_tomography
Fluctuations in the energy spectrum of the microwave background
However, recent work has shown that richer signals can be created by direct photon injection and non-thermal electron populations, both processes that
Cosmic microwave background spectral distortions
Cosmic_microwave_background_spectral_distortions
Canadian theoretical physicist (1960–2025)
approaches to quantum computing since it obviates the need to implement direct photon-photon interactions and laid the foundations for Linear optical quantum
Raymond_Laflamme
Camera to record gamma radiation
discrimination between different isotopes or between scattered and direct photons. In order to obtain spatial information about the gamma-ray emissions
Gamma_camera
Marvel Comics superhero
latest Ultimates team. The character has also been known as Captain Marvel, Photon, Pulsar, and Spectrum at various points in her history. Monica Rambeau appears
Monica_Rambeau
Conceptual rocket engine
Direct Fusion Drive (DFD) is a conceptual, low radioactivity, nuclear-fusion rocket engine, designed to produce both thrust and electric power, suitable
Direct_Fusion_Drive
Secure communication method
than one photon, then Eve can split off the extra photons and transmit the remaining single photon to Bob. This is the basis of the photon number splitting
Quantum_key_distribution
Number-state in quantum mechanics
behavior. Heralded single photon sources are probabilistic two-photon sources from whom the pair is split and the detection of one photon heralds the presence
Fock_state
Theory of the strong nuclear interactions
boson production at colliders (this includes the Drell–Yan process) Direct photons produced in hadronic collisions Jet cross sections in colliders Event
Quantum_chromodynamics
Early commercial laser tag arena
Photon was the name of the first commercial lasertag arenas. The company also came out with a home lasertag game, and there were various media tie-ins:
Photon: The Ultimate Game on Planet Earth
Photon:_The_Ultimate_Game_on_Planet_Earth
Physical model of propagating energy
wave–particle duality, behaving both as waves and as discrete particles called photons. Electromagnetic radiation is produced by accelerating charged particles
Electromagnetic_radiation
Particle scattering in which kinetic energy is not conserved
electrons from protons provided the first direct evidence for the existence of quarks.[citation needed] When a photon is the incident particle, there is an
Inelastic_scattering
Quantum physics thought experiment
point of quantum theory: "It is wrong to attribute a tangibility to the photon in all its travel from the point of entry to its last instant of flight
Wheeler's delayed-choice experiment
Wheeler's_delayed-choice_experiment
Japanese OVA series
Photon: The Idiot Adventures, known in Japan as Photon (フォトン, Foton), is a Japanese original video animation (OVA) series created by Masaki Kajishima.
Photon:_The_Idiot_Adventures
Japanese anime television series
Zillion, known in Japan as Red Photon Zillion (Japanese: 赤い光弾ジリオン, Hepburn: Akai Kōdan Jirion; lit. "Red Photon Bullet Zillion"), is a Japanese anime television
Zillion_(TV_series)
Concept in quantum optics
process that converts one photon of higher energy (namely, a pump photon) into a pair of photons (namely, signal and idler photons) of lower energy, in accordance
Spontaneous parametric down-conversion
Spontaneous_parametric_down-conversion
Hypothetical scalar particle that couples to matter more weakly than gravity
reflect. One strategy to search experimentally for chameleons is to direct photons into a cavity, confining the chameleons produced, and then to switch
Chameleon_particle
Energy scale at which vacuum effects become important
However, the direct effects in elastic scattering have not been observed. As of 2012, the best constraint on the elastic photon–photon scattering cross
Schwinger_limit
List of experiments at CERN, Switzerland
1975 21 Oct 1976 15 Aug 1985 INSPIRE Grey Book — NA3 Aldo Michelini Direct photon production in hadron–hadron collisions at the SPS 2 Oct 1974 29 Mar
List of Super Proton Synchrotron experiments
List_of_Super_Proton_Synchrotron_experiments
Compact astronomical body
the photon sphere depends on the spin parameter and whether the photon is orbiting prograde or retrograde. For a photon orbiting prograde, the photon sphere
Black_hole
Theorem in quantum physics
a single photon cannot arise from the vacuum or be absorbed by it. The theorem was first derived by Wendell H. Furry in 1937, as a direct consequence
Furry's_theorem
Computer graphics method
appearance caused by the filter. Photon mapping is usually combined with some form of ray tracing, allowing precise direct illumination and reflection and
Path_tracing
Soviet-era science fiction writers
(thanks to relativistic effects). Since the starship "Mourmets" has direct photon thrust (absorbing interstellar matter), it is possible to maintain a
Short stories by the Strugatsky brothers
Short_stories_by_the_Strugatsky_brothers
2022 Canadian film directed by Renuka Jeyapalan
Stay the Night is a 2022 Canadian romantic drama film written and directed by Renuka Jeyapalan. The film stars Andrea Bang and Joey Scarpellino. It was
Stay_the_Night_(2022_film)
Energy range in a solid where no electron states exist
energy. For materials with a direct band gap, valence electrons can be directly excited into the conduction band by a photon whose energy is larger than
Band_gap
Australian media franchise
created and managed by Australian children's production company Like a Photon Creative founders Kristen Souvlis and Nadine Bates. The franchise revolves
The_Tales_from_Sanctuary_City
Energy–frequency relation in quantum mechanics
equation in quantum mechanics which states that the photon energy E is proportional to the photon frequency ν (or f): E = h ν = h f . {\displaystyle E=h\nu
Planck_relation
Converting a charged particle's kinetic energy into voltage
"Conversion of high-energy photons into electricity", published 2013-05-23, assigned to Tri Alpha Energy, Inc. l.c. Brown (2002). "Direct Energy Conversion Fission
Direct_energy_conversion
Elementary particle with negative charge
the Lorentz force law. Electrons radiate or absorb energy in the form of photons when they are accelerated. Laboratory instruments are capable of trapping
Electron
2024 Australian film
homeland from being destroyed. The Lost Tiger is a sixth film in Like a Photon Creative's The Tales from Sanctuary City franchise. The film premiered at
The_Lost_Tiger
Instrument used for measuring ionizing radiation
energy photons than a steel tube. However, as photon energies decrease to low levels, there is greater gas interaction, and the contribution of direct gas
Geiger_counter
Type of event in the early universe
are photon decoupling and neutrino decoupling, as these led to the cosmic microwave background and cosmic neutrino background, respectively. Photon decoupling
Decoupling_(cosmology)
2011 Indian film
Tamil-language psychological thriller film written and directed by Gautham Vasudev Menon and produced by Photon Kathaas Productions and RS Infotainment. The film
Nadunisi_Naaygal
High-mass black hole seeds
and helium). Atomic-cooling gas. Sufficiently large flux of Lyman–Werner photons, in order to destroy hydrogen molecules, which are very efficient gas coolants
Direct_collapse_black_hole
Chemical reaction in which a compound is broken down by light
compound are broken down by absorption of light (photons). It is defined as the interaction of one or more photons with one target molecule that dissociates
Photodissociation
Canadian manufacturer of scientific instruments
Photon etc. is a Canadian manufacturer of infrared cameras, widely tunable optical filters, hyperspectral imaging and spectroscopic scientific instruments
Photon_etc.
Physics experiment
determine which of two slits a photon has passed through, the photon cannot interfere with itself. When a stream of photons is marked in this way, then the
Quantum_eraser_experiment
Photon Band is an American indie rock band formed in Philadelphia, PA in 1994. The only constant member is Art DiFuria, who has played with several Philadelphia
Photon_Band
Portion of the electromagnetic spectrum that is visible to the human eye
red, suggesting direct absorption by the L-opsin, there are also reports that pulsed NIR lasers can evoke green, which suggests two-photon absorption may
Visible_spectrum
History and future of the universe
or more photons as they transition to a low energy state. This release of photons is known as photon decoupling. Some of these decoupled photons are captured
Chronology_of_the_universe
Pressure exerted upon any surface exposed to electromagnetic radiation
field or in terms of the momenta of photons, particles of light. The interaction of electromagnetic waves or photons with matter may involve an exchange
Radiation_pressure
German-American physicist
228B. doi:10.1016/0168-9002(85)90264-5. Åkesson, T.; et al. (1987). "Direct-photon plus away-side jet production inpp collisions at $$\SQRT s = 63$$ GeV
Volker_Burkert
Harmful high-frequency radiation
particles or electromagnetic waves that have enough energy per individual photon or particle to ionize atoms or molecules by detaching electrons from them
Ionizing_radiation
In quantum physics, a very short-lived, unobservable quantum state
generally, various types of photochemistry, and nuclear processes. Two-photon absorption Virtual particle Feshbach resonance Shape resonance "A glossary
Virtual_state
Quasiparticle of mechanical vibrations
the analogy to the word photon, in that phonons represent wave-particle duality for sound waves in the same way that photons represent wave-particle duality
Phonon
2002 American film
limiting." Instead of using an actual ship, Australian visual effects company Photon VFX, who had earlier worked on the 2002 film Scooby-Doo, was hired as the
Ghost_Ship_(2002_film)
2024 animated film
Australian animated adventure-comedy film directed by Tania Vincent. It is the fifth film in Like a Photon Creative's The Tales from Sanctuary City franchise
The_Sloth_Lane
Vacuum tube used to display images
containing one or more electron guns, which emit electron beams, which are directed and controlled to display images on a phosphorescent screen. The images
Cathode_ray_tube
Experiment in quantum physics
perpendicular to the trajectory of the incident photon. For the experiment, a collimated x-ray beam is directed to a scattering material in a gap between two
Bothe–Geiger coincidence experiment
Bothe–Geiger_coincidence_experiment
Angular momentum deriving from photon spin
spin and the rotation between the polarization degrees of freedom of the photon. Spin is the fundamental property that distinguishes the two types of elementary
Spin angular momentum of light
Spin_angular_momentum_of_light
fictional universe contains a variety of weapons, ranging from missiles (photon torpedoes) to melee (primarily used by the Klingons, a race of aliens in
Weapons_in_Star_Trek
Inelastic scattering of photons by matter
scattering or the Raman effect (/ˈrɑːmən/) is the inelastic scattering of photons by matter, meaning that there is both an exchange of energy and a change
Raman_scattering
Semiconductor light source
thereby releasing energy in the form of photons. The color of the light (corresponding to the energy of the photons) is determined by the energy required
Light-emitting_diode
Debate in the philosophy of mind
perceive sensations. Direct realism defines perception as perception of external objects where an "external object" is allowed to be a photon in the eye but
Direct_and_indirect_realism
Collision causing gamma ray emission
only direct probe for vacancy-type defects. The reverse reaction, electron–positron creation, is a form of pair production governed by two-photon physics
Electron–positron annihilation
Electron–positron_annihilation
Subatomic particle
patterns of photons as electron neutrinos do. Electron neutrinos and tau neutrinos, in contrast to muon neutrinos, both cause sphere-shaped photon detection
Tau_neutrino
Principle and applications of MINFLUX microscopy
MINFLUX, or minimal fluorescence photon fluxes microscopy, is a super-resolution light microscopy method that images and tracks objects in two and three
Minflux
Elementary particle involved with rest mass
muons) and a photon ( ℓℓγ ), via virtual photon decay. This can happen in three ways: Higgs to virtual photon to ℓℓγ in which the virtual photon ( γ* ) has
Higgs_boson
Form of electromagnetic radiation
properties corresponding to both those of a wave and of a particle, the photon. It was long known that fires emit invisible heat; in 1681 the pioneering
Infrared
Measure of radiant energy over surface area
with suffix "e" (for "energetic") to avoid confusion with photometric or photon quantities. Alternative symbols sometimes seen: W or E for radiant energy
Irradiance
Change in wavelength of light
structure of the universe. Redshift and blueshift can also be related to photon energy and, via Planck's law, to a corresponding blackbody temperature.
Redshift
Mathematical concept applicable to physics
with suffix "e" (for "energetic") to avoid confusion with photometric or photon quantities. Alternative symbols sometimes seen: W or E for radiant energy
Flux
DIRECT PHOTON
DIRECT PHOTON
Boy/Male
Indian, Punjabi, Sikh
One who Sings Glory of God
Boy/Male
Dutch
Dutch forms of Theodoric.
Girl/Female
Hindu, Indian, Malayalam, Marathi, Telugu
Direct; Lead
Boy/Male
English American German
Leader.
Girl/Female
Tamil
Direct, Lead
Girl/Female
Indian, Sikh
Lion
Boy/Male
American, Australian, British, Chinese, English, German
Ruler of the People; The People's Ruler
Boy/Male
Hindu, Indian, Marathi
One who Directs; Leader
Girl/Female
Indian, Sikh
Faithful
Boy/Male
German
People's Ruler
Boy/Male
Hindu
Direct evidence
Boy/Male
Tamil
Pratyaksh | பà¯à®°à®¤à¯à®¯à®•à¯à®·
Direct evidence
Pratyaksh | பà¯à®°à®¤à¯à®¯à®•à¯à®·
Boy/Male
Indian, Punjabi, Sikh
Hearty Traditions
Male
Turkish
Turkish name DIRENÇ means "resistance."
Boy/Male
Tamil
One who directs, Guide
Boy/Male
Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi
Crown
Boy/Male
Hindu, Indian, Marathi
One who Directs; Guide
Girl/Female
Greek Latin
Killed for abusing children.
Girl/Female
Teutonic American German Latin
Directed.
Male
French
French form of Latin Benedictus, BÉNÉDICT means "blessed."Â
DIRECT PHOTON
DIRECT PHOTON
Boy/Male
English
Black; White
Boy/Male
Anglo Saxon
Sharp.
Boy/Male
Scottish
From the hill of the sacred bough.
Boy/Male
Czech
Great soldier.
Boy/Male
Indian
Musical prelude
Boy/Male
Indian, Tamil
King of Poetry
Girl/Female
English Latin
Follower of Christ.
Male
Egyptian
, the name of a palace chief.
Boy/Male
Christian, Indian
King; Pie
Boy/Male
Tamil
Good, Messenger
DIRECT PHOTON
DIRECT PHOTON
DIRECT PHOTON
DIRECT PHOTON
DIRECT PHOTON
v. t.
To point out or show to (any one), as the direct or right course or way; to guide, as by pointing out the way; as, he directed me to the left-hand road.
a.
Not direct; not straight or rectilinear; deviating from a direct line or course; circuitous; as, an indirect road.
v. t.
To direct.
v. t.
To determine the direction or course of; to cause to go on in a particular manner; to order in the way to a certain end; to regulate; to govern; as, to direct the affairs of a nation or the movements of an army.
a.
Not reaching the end aimed at by the most plain and direct method; as, an indirect proof, demonstration, etc.
n.
One who directs; a director.
v. t.
To arrange in a direct or straight line, as against a mark, or towards a goal; to point; to aim; as, to direct an arrow or a piece of ordnance.
v. t.
To point out to with authority; to instruct as a superior; to order; as, he directed them to go.
n.
Failing; fault; imperfection, whether physical or moral; blemish; as, a defect in the ear or eye; a defect in timber or iron; a defect of memory or judgment.
n.
One who, or that which, directs; one who regulates, guides, or orders; a manager or superintendent.
a.
Straight; not crooked, oblique, or circuitous; leading by the short or shortest way to a point or end; as, a direct line; direct means.
a.
Indirect.
a.
In the line of descent; not collateral; as, a descendant in the direct line.
n.
A part of a machine or instrument which directs its motion or action.
adv.
In a straightforward way; without anything intervening; not by secondary, but by direct, means.
a.
Directed upward; raised; uplifted.
a.
Not resulting directly from an act or cause, but more or less remotely connected with or growing out of it; as, indirect results, damages, or claims.
v. t.
To put a direction or address upon; to mark with the name and residence of the person to whom anything is sent; to superscribe; as, to direct a letter.
imp. & p. p.
of Direct
adv.
In a direct manner; in a straight line or course.