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- {{short description|Engineering theory}} ...ta|first3=Rosario|last4=Ubertini|first4=Francesco|title=A generalized beam theory with shear deformation|journal=Thin-Walled Structures|date=June 2013|volume ...6 KB (855 words) - 17:31, 2 December 2023
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- ...ensity distribution.jpg|thumb|7x7 matrix using green laser and diffractive beam splitter.]] ...romatic electromagnetic plane wave|monochromatic light]] such as a [[laser beam]], and is designed for a specific [[wavelength]] and [[Angular distance|ang ...5 KB (749 words) - 18:00, 9 June 2024
- {{short description|Solid mechanics model of a weightless beam under a bending moment}} ...cs)|stress]] where a [[bending moment]] is applied to a [[Beam (structure)|beam]] without the simultaneous presence of [[Cylinder stress|axial]], [[Shear s ...2 KB (351 words) - 23:39, 20 April 2024
- ...).png|thumb|right|300px|(0) real beam, (1) shear and moment, (2) conjugate beam, (3) slope and displacement]] ...{cite book |url=https://books.google.com/books?id=2IHEqp8dNWwC&q=conjugate+beam+definition&pg=PT602 |title=Strength of materials |isbn=9788131808146 |acces ...8 KB (1,244 words) - 18:29, 14 October 2024
- ...ractive optical element]] (DOE) that allows a single incident [[Laser beam|beam]] to be [[focus (optics)|focused]] simultaneously at several positions alon An incident [[laser]] beam is deflected by grooved [[Diffraction grating|diffraction pattern]] into ax ...3 KB (351 words) - 14:21, 23 October 2022
- *[[Euler–Bernoulli beam theory|Euler–Bernoulli beam equation]] ...1 KB (140 words) - 19:13, 18 February 2022
- ...or not the beam is being clipped by an obstruction; By focusing the laser beam with a [[Lens (optics)|lens]] and measuring the minimum spot size, the numb ...as the [[beam divergence]]. M<sup>2</sup> can also give an indication of beam distortions due to, for example, power-induced [[thermal lensing]] in the [ ...7 KB (1,046 words) - 06:36, 19 August 2024
- ...e of perveance indicates how significant the space charge effect is on the beam's motion. The term is used primarily for [[electron]] beams, in which motio ...vistic]] beams propagating through a [[vacuum chamber]]. In this case, the beam is assumed to have been accelerated in a stationary electric field so that ...3 KB (505 words) - 16:52, 29 January 2023
- ...ta_B</math> is chosen such that the beam diffracted at the grating and the beam reflected at the steps are both deflected into the same direction. Commonly ...er geometries yield anamorphic [[Littrow expansion]] or compression of the beam. ...5 KB (782 words) - 20:39, 5 April 2024
- ...[[Image:Broad-beam-schematic.png|thumb|250px|Schematic drawing of a broad beam incident on a multi-layer scattering medium. {{deletable image-caption}}]] ...broad-beam responses by distributing photons over the cross section of the beam. However, [[convolution]] can be used in certain cases to improve computat ...9 KB (1,507 words) - 18:51, 22 December 2023
- ...which a part of a long [[structural element]] (such as [[Beam (structure)|beam]]) is [[deformation (mechanics)|deformed]] laterally (in the direction tran Standard formulas exist for the deflection of common [[Beam (structure)|beam]] configurations and load cases at discrete locations. ...12 KB (1,973 words) - 21:35, 10 December 2024
- In [[scattering theory]] and [[Particle accelerator|accelerator physics]], '''luminosity''' (''L'' ...'' is dependent on the [[particle beam|particle beam parameters]], such as beam width and particle flow rate, as well as the target properties, such as tar ...6 KB (869 words) - 23:44, 21 December 2024
- ...a grating-external-cavity semiconductor laser containing intracavity prism beam expanders, ''J. Lightwave Tech.'' '''10''', 330–335 (1992).</ref><ref>P. Zo ...> Under those conditions, that is, zero dispersion from the multiple-prism beam expander, the single-pass [[laser linewidth]] is given by<ref name="DLP"/>< ...7 KB (955 words) - 19:41, 12 September 2024
- ...erence being that with the addition of a fourth bearing the portion of the beam between the two loading points is put under maximum stress, as opposed to o * <math>b</math> = Width of test beam, (mm) ...8 KB (1,128 words) - 15:53, 11 February 2025
- {{short description|Engineering theory}} ...ta|first3=Rosario|last4=Ubertini|first4=Francesco|title=A generalized beam theory with shear deformation|journal=Thin-Walled Structures|date=June 2013|volume ...6 KB (855 words) - 17:31, 2 December 2023
- In [[quantum field theory]], '''initial and final state radiation''' refers to certain kinds of radia ...ation, and since the momentum transfer has already occurred, the resulting beam energy decreases. ...6 KB (884 words) - 06:09, 21 January 2025
- ...is controlled by switching power to the desired beam port. More than one beam, or even all <math>n</math> of them can be activated simultaneously. ...lar antenna array can be made to simultaneously produce an omnidirectional beam and multiple directional beams when fed through two Butler matrices back-to ...12 KB (1,734 words) - 19:48, 18 May 2024
- ==Theory== ...ual to the Larmor frequency, it will produce a high intensity of the other beam (spin down state). By sweeping the frequency to obtain a maximum intensity, ...3 KB (473 words) - 09:11, 10 November 2023
- ...llipse.svg|thumb|400px|One dimensional position-momentum plot, showing the beam ellipse described in terms of the Courant–Snyder parameters.]] ...on and velocities (or momenta) along that dimension of every particle in a beam are plotted on a [[phase space]] diagram, an [[ellipse]] enclosing the part ...10 KB (1,603 words) - 08:42, 30 January 2023
- [[File:Ibeam.svg|thumb|Typical cross-section of [[I-beam]]s]] ...|first=Salah A. M. |date=2019-12-04 |title=Hybrid Organic/Inorganic Nano-I-beam for Structural Nano-mechanics |journal=Scientific Reports |language=en |vol ...9 KB (1,276 words) - 23:53, 1 July 2024
- ...ole signal is measured by the detector. By measuring the whole signal, the beam small distortions become insignificant and the z-dependent signal variation Despite its simplicity, in many cases, the original z-scan theory is not completely accurate, e.g. when the investigated sample has inhomogen ...8 KB (1,235 words) - 22:29, 1 April 2024