Results 31 to 40 of about 764,030 (358)

About elementary particles

open access: yesЛитьë и металлургия, 2023
It is shown that only stable particles can be elementary particles. The fundamental elementary particles are positive, negative and neutral particles of space.
V. Yu. Stetsenko
doaj   +1 more source

Why Far-Red Photons Should Be Included in the Definition of Photosynthetic Photons and the Measurement of Horticultural Fixture Efficacy

open access: yesFrontiers in Plant Science, 2021
Photons above 700 nm have minimal photosynthetic activity when applied alone (Emerson and Lewis, 1943; McCree, 1971) and have thus been excluded from the definition of photosynthetically active radiation (PAR; 400 to 700 nm).
Shuyang Zhen   +2 more
semanticscholar   +1 more source

Photon-photon interaction in a photon gas [PDF]

open access: yesEurophysics Letters (EPL), 2000
Using the effective Lagrangian for the low energy photon-photon interaction the lowest order photon self energy at finite temperature and in non-equilibrium is calculated within the real time formalism. The Debye mass, the dispersion relation, the dielectric tensor, and the velocity of light following from the photon self energy are discussed.
openaire   +3 more sources

Learning cellular morphology with neural networks

open access: yesNature Communications, 2019
Volume electron microscopy data of brain tissue can tell us much about neural circuits, but increasingly large data sets demand automation of analysis. Here, the authors introduce cellular morphology neural networks and successfully automate a range of ...
Philipp J. Schubert   +4 more
doaj   +1 more source

18-Qubit Entanglement with Six Photons' Three Degrees of Freedom. [PDF]

open access: yesPhysical Review Letters, 2018
Full control of multiple degrees of freedom of multiple particles represents a fundamental ability for quantum information processing. We experimentally demonstrate an 18-qubit Greenberger-Horne-Zeilinger entanglement by simultaneous exploiting three ...
Xi-Lin Wang   +14 more
semanticscholar   +1 more source

PHOTON-PHOTON INTERACTIONS [PDF]

open access: yesNuclear Physics A, 1981
Abstract A brief summary of the present status of photon-photon interactions is presented. Stress is placed on the use of two-photon collisions to test present ideas on the quark constituents of hadrons and on the theory of strong interactions.
openaire   +2 more sources

Theoretical Investigation of the Influence of Different Heavy Metal Oxides Modifiers on ZnO-Bi2O3-B2O3-SiO2’s Photon- and Neutron-Shielding Capabilities Using the Monte Carlo Method

open access: yesApplied Sciences, 2023
Radiation has become an essential part in medicine and researchers are constituently investigating radiation shielding materials that are suitable for different medical applications.
Hanan Akhdar
doaj   +1 more source

Deciphering the interactions between single arm dislocation sources and coherent twin boundary in nickel bi-crystal

open access: yesNature Communications, 2021
Interactions of dislocations with coherent twin boundaries contribute to strength and ductility in metals, but investigating the interaction mechanisms is challenging.
Vahid Samaee   +5 more
doaj   +1 more source

Generation of Photon Orbital Angular Momentum and Its Application in Space Division Multiplexing

open access: yesPhotonics, 2023
In the last three decades, light’s orbital angular momentum (OAM) has been of great interest because it has unique characteristics that make it sought after in many research fields, especially in optical communications.
Temitope M. Olaleye   +2 more
doaj   +1 more source

On-Demand Semiconductor Source of Entangled Photons Which Simultaneously Has High Fidelity, Efficiency, and Indistinguishability. [PDF]

open access: yesPhysical Review Letters, 2019
An outstanding goal in quantum optics and scalable photonic quantum technology is to develop a source that each time emits one and only one entangled photon pair with simultaneously high entanglement fidelity, extraction efficiency, and photon ...
Hui Wang   +15 more
semanticscholar   +1 more source

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