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Topic: Beam


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  NOVA Online | Super Bridge | Beam Bridges
The beam itself must be strong so that it doesn't bend under its own weight and the added weight of crossing traffic.
When a load pushes down on the beam, the beam's top edge is pushed together (compression) while the bottom edge is stretched (tension).
Pre-stressed concrete is an ideal material for beam bridge construction; the concrete withstands the forces of compression well and the steel rods imbedded within resist the forces of tension.
www.pbs.org /wgbh/nova/bridge/meetbeam.html   (408 words)

  
 BEAM Online - The Yahoo of BEAM
We compared their abilities in different situations such as complex mazes and light seeking tests to see which one performed and adapted better.
I know there are so many good tutorials and other info out there on small BEAM sites (even large ones) that never gets seen when so many people could benifit from it.
There are now 50+ BEAM links as well as many other links to circuit sites, suppliers, and more.
www.beam-online.com   (882 words)

  
  I-BEAM | IAQ in Large Buidings | Indoor Air | U.S. EPA
I-BEAM updates and expands EPA's Building Air Quality guidance and is designed to be a comprehensive state-of-the-art guidance for managing IAQ in commercial buildings.
I-BEAM consists of many individual modules which explain different aspects of IAQ including how to manage, operate, and maintain your building for IAQ, and how to insure that your energy efficiency projects are compatible with IAQ.
Also on the I-BEAM menu bar are Resources, which allow the user to access parts of I-BEAM as word processing documents or spreadsheets, as well as access other resources, such as other EPA publications.
www.epa.gov /iaq/largebldgs/ibeam_page.htm   (1319 words)

  
  Beam (structure) - Wikipedia, the free encyclopedia
Beams are characterized by their profile (the shape of their cross-section), their length, and their material.
Under gravity loads, the top of the beam is under compression while the bottom of the beam is under tension, leaving the middle of the beam relatively stress-free in the middle of the span, with shear stress above the supports.
Mathematical methods for determining the beam forces (internal forces of the beam and the forces that are imposed on the beam support) include the "moment distribution method", the force or flexibility method and the matrix stiffness method.
en.wikipedia.org /wiki/Beam_(structure)   (534 words)

  
 Beams - theory and practice
The bodies of many animals can be considered as beams between the legs, and their necks can be considered as cantilevers, though of course the internal structure is vastly more complicated than anything made by people Look at a giraffe, for example.
At the centre of the beam, the cross section is at 45 degrees to the horizontal.
To make a beam more stiff, instead of merely using more material to deepen a beam, it is better to split the existing material into several parallel beams which are deep but narrow; this is a better use of the material.
www.brantacan.co.uk /beam.htm   (3530 words)

  
 Beam - Wikipedia, the free encyclopedia
Beam (nautical), in nautical terminology,the most extreme width (or breadth) of a vessel, or a point alongside the ship at the mid-point of its length.
Beam (music), is a connection line in musical notation
Tractor beam, the hypothetical beam from science fiction that pulls objects in.
en.wikipedia.org /wiki/Beam   (183 words)

  
 Beam
In 1 Samuel 17:7, it means a weaver's frame or principal beam; in Habakkuk 2:11, a crossbeam or girder; 2 Kings 6:2,5, a cross-piece or rafter of a house; 1 Kings 7:6, an architectural ornament as a projecting step or moulding; Ezek.
Beam compass, an instrument consisting of a square wooden or brass beam, having sliding sockets, that carry steel or pencil points; used for describing large circles, and in large projections for drawing the furniture on wall-dials.
Before the beam, is an arch of the horizon between a line that crosses the ship at right angles, or the line of the beam, and that point of the compass which she steers.
dictionary.christianpost.com /definition/beam.htm   (500 words)

  
 Molecular Beam Epitaxy Encyclopedia Article @ Encyclopedia.LocalColorArt.com   (Site not responding. Last check: )
Molecular Beam Epitaxy System in the William R. Wiley Environmental Molecular Sciences Laboratory is used to grow and characterize thin crystalline films of oxides and ceramics to understand in detail the chemistry that occurs on oxides and ceramic surfaces.
The term "beam" simply means that evaporated atoms do not interact with each other or any other vacuum chamber gases until they reach the wafer, due to the large mean free path lengths of the beams.
Molecular beam epitaxy is also used for the deposition of some types of organic semiconductors.
encyclopedia.localcolorart.com /encyclopedia/Molecular_beam_epitaxy   (504 words)

  
 Chiu-Yuan Fang's BEAM Robotics Table of Contents   (Site not responding. Last check: )
BEAM robotics is a new field of robotics.
The simplicity of BEAM construction allows people from all walks of life and levels of education to create very capable autonomous robots without learning to program or a government research grant.
The potential for progressive learning makes BEAM an excellent hobby for young children who can learn basic construction techniques and mechanics, with parental aid of course, and move up to the electronics portion when they are ready.
www.geocities.com /SouthBeach/6897/beam2.html   (351 words)

  
 Introducing the Particle-Beam Weapon
As the particles of the beam collide with the atoms, protons, and electrons of the material composing the target, the energy of the particles in the beam is passed on to the atoms of the target much like a cue ball breaks apart a racked group of billiard balls.
In describing a particle beam, it is conventional to speak of the energy of the beam (in electron-volts), the beam current (in amperes), and the power of the beam (in watts).
The result of this phenomenon is to neutralize the overall charge of the beam, thereby reducing the undesired effect of mutual repulsion among the charged particles in the beam that is a cause of beam spreading.
www.airpower.maxwell.af.mil /airchronicles/aureview/1984/jul-aug/roberds.html   (5096 words)

  
 BEAM
BEAM is a school of robotics, starting from simple reflexes, in a "bottoms-up" approach.
The majority of BEAM robots are non-computerized (although simple CPUs can be used to drive them, in a "horse and rider" sort of way).
Unlike many traditional processor-based robots, BEAM robots are cheap, simple, and can be built by a hobbyist with basic skills in a matter of hours.
encyclobeamia.solarbotics.net /articles/beam.html   (373 words)

  
 beam - Wiktionary
One of the principal horizontal timbers of a building; one of the transverse members of a ship's frame on which the decks are laid - supported at the sides by knees in wooden ships and by stringers in steel ones.
A cylinder of wood, making part of a loom, on which weavers wind the warp before weaving; also, the cylinder on which the cloth is rolled, as it is woven; one being called the fore beam, the other the back beam.
The main part of a plow, to which the handles and colter are secured, and to the end of which are attached the oxen or horses that draw it.
en.wiktionary.org /wiki/beam   (386 words)

  
 BeamView
Pay attention to how shear and moment distribution changes under each load added to the beam keeping in mind that the slope of the moment diagram at any point is equal to the shear at that section and the slope of the shear is equal to the load density at that section.
For the properties of the beam, there are input fields for the length of the Beam (L), Young's modulus (E), and moment inertia (I).
The scale of the deflection diagram relative to the length of the beam is shown on the bottom of the panel.
www.engapplets.vt.edu /statics/BeamView/BeamView.html   (825 words)

  
 The BEAM Project
BEAM is the Basic ERS and Envisat (A)ATSR and Meris Toolbox and is a collection of executable tools and an application programming interface (API) which have been developed to facilitate the utilisation, viewing and processing of ESA MERIS, (A)ATSR and ASAR data.
The purpose of the BEAM is not to duplicate existing commercial packages, but to complement them with functions dedicated to the handling of Envisat MERIS and AATSR products.
The development of the BEAM software is targeted as an open source project and comes with full source code.
www.brockmann-consult.de /beam   (335 words)

  
 Whirlwind / E BEAM
The E BEAM can solve many of the logistical problems encountered when using standard copper wire or fiber optic cabling.
Beams can be pointed, transmitted, received and redirected at any angle without use of mirrors.
Although the E BEAM is not intended to totally replace structured cable, its implementation into a hybrid Ethernet / fiber delivery system can greatly reduce costs associated with construction labor, conduit, termination and other issues encountered with hardwired systems.
whirlwindusa.com /ebeam.html   (622 words)

  
 Beam   (Site not responding. Last check: )
Three elements on 121.5 and four on 243 MHz give a gain 3 to 4 dB greater than the standard antenna when the DF is in the RECeive (signal strength) mode.
The beam will not give left-right homing, but two LHBA antennas can be used to improve sensitivity of the LIF-10 interferometer.
This beam fits on either the standard short mast or the optional folding long mast (shown) and folds quickly to 26" long.
www.ltronics.com /beamant.htm   (140 words)

  
 BEAM Online > About BEAM
BEAM robotics is the brain child of Mark W. Tilden who is currently working at "Los Alamos National Laboratory" in Los Alamos, New Mexico, US.
BEAM is also a great way to learn about electronics and mechanics.
Surprisingly the average range of the BEAM community is 13-17 but goes up to older electrical engineers and hobbyists.
www.beam-online.com /navagation/_ab.htm   (446 words)

  
 BEAM Robotics Philosophy   (Site not responding. Last check: )
The BEAM Robot Games is therefore not so much a series of technological competitions as a chance for robot enthusiasts to present their designs to each other, the press, and the public.
Thus BEAM, which stands for Biology, Electronics, Aesthetics, and Mechanics (amongst others) is a system founded by Mark W. Tilden while at the University of Waterloo (Canada) that allows first time enthusiasts to get started easily.
Building robots is difficult, so the BEAM games are designed as a forum where designers don't so much match wits against each other, but against the natural (and relentless) perversity of the physical universe.
www.nis.lanl.gov /projects/robot/html/philosophy.html   (848 words)

  
 Truck Air Horns - Stainless Steel Truck Horns
Beam horns are manufactured in Italy and are typical of the finest Italian workmanship and quality.
Beam horns are constructed of the finest materials.
Since Beam is a European OEM supplier, these products meet all of the rigorous tests that are required by OEM commercial truck manufacturers.
www.buytruckstuff.com /truckairhorns.htm   (295 words)

  
 beam. The American Heritage® Dictionary of the English Language: Fourth Edition. 2000.
A steel tube or wooden roller on which the warp is wound in a loom.
A concentrated stream of particles or a similar propagation of waves: a beam of protons; a beam of light.
To express by means of a radiant smile: He beamed his approval of the new idea.
www.bartleby.com /61/28/B0132800.html   (249 words)

  
 beam
The pollsters were off the beam again for the last presidential election.
Their research is right on the beam and the results should be very valuable.
to emit in or as in beams or rays.
www.infoplease.com /dictionary/beam   (319 words)

  
 BEAMnrc home page: A simulation system for radiotherapy sources
BEAM was developed originally as part of the OMEGA project which was a collaboration between NRC and Rock Mackie's group at the University of Wisconsin in Madison.
This colection is primarily based on using BEAM and the EGS_Windows graphics package Version 4.0, which works on any X-windows system is available here.
BEAM song will be familiar (its in WAV format and isn't as good as in person!
www.irs.inms.nrc.ca /inms/irs/BEAM/beamhome.html   (1493 words)

  
 Antenna Farm Records .:. Beam
Formed in 2000, Beam is led by French ex-pat Helene Renaut, a music major from Brittany.
Determined to escape the gloom of her hometown, she busked gypsy songs on the violin to finance a move to San Francisco in 1995.
But Beam could never draw on as narrow a range of influences.
www.antennafarmrecords.com /artists/beam.htm   (166 words)

  
 Miller Post + Beam, LLC (Post & Beam Construction)
Post-and-beam construction utilizes a framework of vertical posts and horizontal beams to carry both floor and roof loads.
The beam supporting the floor and roof system transmit their loads to posts or columns that, in turn, carry the loads down to the foundation system.
When the post-and-beam frame is left exposed, careful attention must be made to the species and grade of wood used, the detailing of joints, especially at the beam-to-beam and beam-to-post connections, and the quality of workmanship.
www.miller-post-beam.com /post-beam.html   (163 words)

  
 Beam (WebBible Encyclopedia) - ChristianAnswers.Net
The word "beam" occurs in the King James Version as the rendering of various Hebrew words.
17:7, it means a weaver's frame or principal beam; in Hab.
"Mote" and "beam" became proverbial for little and great faults.
www.christiananswers.net /dictionary/beam.html   (113 words)

  
 Euler-Bernoulli Beam Equation
where p is the distributed loading (force per unit length) acting in the same direction as y (and w), E is the Young's modulus of the beam, and I is the area moment of inertia of the beam's cross section.
The Euler beam equation arises from a combination of four distinct subsets of beam theory: the kinematic, constitutive, force resultant, and equilibrium definition equations.
To relate the beam's out-of-plane displacement w to its pressure loading p, we combine the results of the four beam sub-categories in the order shown,
www.efunda.com /formulae/solid_mechanics/beams/index.cfm   (189 words)

  
 E-beam evaporator, Electron beam evaporator, UHV evaporator, Oxford, EFM, k-cell, effusion cell, rod and crucible ...   (Site not responding. Last check: )
The Oxford Scientific OS-Vap is acombined mini e-beam evaporator and e-beam heated effusion cell and is capable of evaporating small quantities of almost any material.
The fixed thermocouple design of this instrument allows this mode to be used whether evaporating from rod or crucibles.
A small electrode is used to intercept the edge of the beam and collects the ions present in the partially ionised evaporant.
www.specs.com /products/MBE/E-Beam-Evaporator/E-Beam.htm   (691 words)

  
 The FreeSpace 2 Beam Reference
The Terran slash and anti-fighter beams are *usually* infinite-range, but seem to clip back to 30K whenever they would be missing the target.
The total damage dealt by a beam cycle is actually the value in the Damage column, multiplied by the Life value, multiplied by 5.5.
This "ideal damage" assumes the beam is in contact with the target for the entire duration of the cycle.
home.att.net /~clay.h/fs2/beamfaq.htm   (1528 words)

  
 Kitaro House - Instruments - Beam   (Site not responding. Last check: )
The "Beam", that is used by Kitaro, is probably a reproduction or modified version of the "Blaster Beam".
This instrument was invented and built in the 70th by the American Craig Huxdley.
You can see it in action on the DVD "Tamayura" in the song "Beam Wave" or on the DVD "Live in Yakushiji" in the song "Wa".
www.gigapolis.com /silkroad/kitaro/english/equipment/beam.htm   (143 words)

  
 Straight beams with constant cross sections (Straight beam)
The application is designed for calculations of straight, maximum three times static indefinite beams with constant axis-symmetrical profiles.
Simple definition of the type of beam and its loading with visual check.
Calculation and graphic illustration of the moment, stress, deflection and bending angle of the loaded beam.
www.mitcalc.com /en/pr_beam.htm   (157 words)

  
 Your UB
BEAM shines light of hope on inner-city students
The Buffalo-Area Engineering Awareness for Minorities (BEAM) program in the UB School of Engineering and Applied Sciences offers free pre-college classes to inner city middle school and high school students who want to explore the wonders of science and technology.
Since BEAM’s inception in 1982, 90 percent of its students have gone on to attend four-year colleges.
www.buffalo.edu /community/story_beam.html   (116 words)

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