Word Finder - beam

definition

Any large piece of timber or iron long in proportion to its thickness, and prepared for use.

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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.

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The maximum width of a vessel (note that a vessel with a beam of 15 foot can also be said to be 15 foot abeam)

example

This ship has more beam than that one.

synonyms

• breadth

definition

The crossbar of a mechanical balance, from the ends of which the scales are suspended.

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The principal stem of the antler of a deer.

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The pole of a carriage or chariot.

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A cylinder of wood, making part of a loom, on which weavers wind the warp before weaving and the cylinder on which the cloth is rolled, as it is woven.

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The straight part or shank of an anchor.

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The central bar 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.

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In steam engines, a heavy iron lever having an oscillating motion on a central axis, one end of which is connected with the piston rod from which it receives motion, and the other with the crank of the wheel shaft.

synonyms

• walking beam
• working beam

definition

A ray or collection of approximately parallel rays emitted from the sun or other luminous body.

example

a beam of energy

definition

A ray; a gleam.

example

a beam of hope, or of comfort

definition

One of the long feathers in the wing of a hawk.

synonyms

• beam feather

definition

A horizontal bar which connects the stems of two or more notes to group them and to indicate metric value.

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An elevated rectangular dirt pile used to cheaply build an elevated portion of a railway.

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To emit beams of light; shine; radiate.

example

to beam forth light

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To smile broadly or especially cheerfully.

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To furnish or supply with beams

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To give the appearance of beams to.

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To transmit matter or information via a high-tech wireless mechanism.

example

Beam me up, Scotty; there's no intelligent life down here.

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(currying) To stretch something (for example an animal hide) on a beam.

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To put (something) on a beam

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To connect (musical notes) with a beam, or thick line, in music notation.

I lifted the heavy wood beam that crossed their door, securing it.

He turned the beam around the yard and then shut the door.

He stepped through the doorway and turned the beam of light on her.

Suddenly the beam caught a figure crouched ahead.

His Histoire de Beam was published at Paris in 1640.

Turning the light back on, she pointed the beam on the area where the scream seemed to originate.

The beam of light extinguished and she felt around with trembling hands until she located the flashlight.

The beam was swallowed by the catacombs, and it was still too dark around her to see how large the underground world was.

What is required is some means for localizing and directing a beam of radiation.

This brings the beam to a horizontal position.

Sigebert was anxious to avenge his sister-in-law, but on the intervention of Guntram, he accepted the compensation offered by Chilperic, namely the cities of Bordeaux, Cahors and Limoges, with Beam and Bigorre.

Caine was the scene of the synod of 978 when, during the discussion of the question of celibacy, the floor suddenly gave way beneath the councillors, leaving Archbishop Dunstan alone standing upon a beam.

To the last, judging by the specimens of Scandinavian boats which have come down to us, they must have been not very seaworthy; they were shallow, narrow in the beam, pointed at both ends, and so eminently suitable for manoeuvring (with oars) in creeks and bays.

I replaced the beam securing the door on my side and without a word, left the cellar.

In the latter case it will be necessary to provide means to mount the coelostat on a carriage by which it can be moved east and west without changing the altitude or azimuth of its polar axis, and also to shift the second mirror so that it may receive all the light from the reflected beam.

By this arrangement the angular rotation of the reflected beam is less than that of the magnet, and hence the spot of light reflected from this mirror yields a trace on a much smaller scale than that given by the ordinary mirror and serves to give a complete record of even the most energetic disturbance.

This case has important practical applications; for instance we may use the method to find the pressures on the supports of a beam loaded in any given manner.

The pressures of the beam on the supports are of course represented by ED, AE.

For instance, in the case 01 a beam in equilibrium under any given loads and the reactionf at the supports, we get a graphical representation of the distributior of bending moment over the beam.

The murk remaining in the lagar is then pressed by means of a lever or beam press with which this vessel is fitted.

This platen had a perpendicular motion, being guided in grooves and worked by a connecting rod fixed to a cross beam and crank, which acquired its motion from the main shaft.

In the third War of Religion he occupied Beam and Bigorre (1569).

Early one morning, we are told, in the fourth month, he got up, and with his hands behind his back, dragging his staff, he moved about his door, crooning over " The great mountain must crumble, The strong beam must break, The wise man must wither away like a plant."

A beam of sunlight admitted into a darkened room through a narrow aperture, and there dispersed into a vario-tinted band by the interposition of a prism, is not absolutely W continuous.

Holes for the main beam fixings should be drilled by an expert, using a suitable masonry drill and safety guards.

We have a national facility within the condensed matter group for the production of thin magnetic films by molecular beam epitaxy.

Material etching can be carried out by Ion Beam Milling, reactive ion etching and wet chemical etching.

If the beam is obstructed, the door will not close.

Rankine gives the approximate rule Working deflection =5= l a /t o,000h, where l is the span and h the depth of the beam, the stresses being those usual in bridgework, due to the total dead and live load.

The main shaft is termed the beam; the first or lowest tine the brow-tine; the second the bez-tine; the third the trez-tine, or royal; and the branched portion forming the summit the crown, or surroyals.

Finally, we have the thamin, or Eld's deer, C. (R.) eldi, ranging from Burma to Siam, and characterized by the continuous curve formed by the beam and the brow-tine of the antlers.

A similar construction is followed for flat roofs, the grades being generally formed in the girder and beam construction, and a flat ceiling secured by hanging from them, with steel straps, a light tier of ceiling beams. The floor beams are tied laterally by rods in continuous lines placed at or above their neutral axis.

If the supporting member is a floor beam or girder the girder should be rigidly connected to the floor system to prevent any twisting due to the weight of the projection.

In case neither of the above methods can be applied, brackets should be used at each floor level or a continuous deep beam or girder carried all around the building.

In all cases it is customary to fill on top of the arches with a strong Portland cement concrete to a uniform level, generally the top of the deepest beam; the floor filling is constructed and carried to this level immediately upon the completion of each tier of beams, for the purpose not only of stiffening the frame laterally, and of adding to its stability by the imposition of a static load, but also to afford constantly safe and strong working platforms at regular and convenient intervals for use throughout the entire period of the construction.

As the supply of sodium was increased, the lines, besides becoming broader, did so unsymmetrically, and a shaded wing or band appeared on one side or the other according as the beam impinged on one side or the other of the flame.

Equal-armed balances may be divided into (t) scale-beams or balances in which the scale-pans are below the beam; (2) counter machines and balances on the same principle, in which the scale-pans are above the beam.

The beam must be provided with a small ball of metal which can be screwed up and down a stem on the top of the beam for the purpose of accurately adjusting the position of the centre of gravity, and there should be a small adjustable weight on a fine screw projecting horizontally from one end of the beam for the purpose of accurately balancing the arms.

The theory of the scale-beam is stated by Weisbach in his Mechanics of Machinery and Engineering, as follows - In fig I D is the fulcrum of the balance, S the centre of gravity of the beam alone without the scales, chains or weights; A and B the points of suspension of the chains.

Bearing in mind that with ordinary trade balances there is always a possi - bility of the scale-pans and chains getting interchanged, these conditions require; (a) That the beam without the scale-pans and chains must be equally balanced and horizontal; (b) that the two scale-pans with their chains must be of equal weight; (c) that the arms of the beam must be exactly equal in length; i.e.

By testing the beam with the scale-pans attached and equal weights in the pans, and noting carefully the position which it takes up; and then interchanging the scale-pans, &c., and again noting the position which the beam takes up, a correct inference can be drawn as to the causes of error; and if after slightly altering or adjusting the knife-edges and scale-pans in the direction indicated by the experiment, the operation is repeated, any required degree of accuracy may be ob - tained by successive approximations.

In order to ensure a high degree of sensitiveness, balances are sometimes constructed so that Z is slightly below the line joining X and Y, and is only slightly above H, the centre of gravity of the beam with the scale - pans and chains attached.

To keep the beam truly in its place, which is very necessary, as all the bearings are flat,the re From Airy, " On Weighing Machines," Institution of Civil Engineers, 1892.

The end knife-edges are adjusted and tightly jammed into exact position by means of wedge pieces and set screws, and the beam is furnished with delicate adjusting weights at its top. The position of the beam with respect to the horizontal is shown by a horizontal pointer (not shown) projecting from one end of it, which plays past a scale, each division of which corresponds to the i l oth or i hth of a grain according to the size and delicacy of the machine.

Therefore by graduating the top of the beam and shifting a rider grain weight till the beam is horizontal, it is easy to ascertain the small difference of weight in the scale-pans which caused the de - flection to the T foth or i.

In ordinary trade balances a triangular piece of hard steel, with a finely-ground edge, is driven through a triangular hole in the beam and jammed tight.

Similarly the two projecting ends of the central piece of steel which forms the fulcrum take bearing on two cheeks of the stand, between which the beam sways.

It is clear that errors will arise if the pieces of steel are not truly perpendicular to the plane of the beam, and the adjust - ment of great accuracy would be very tedious.

Therefore for balances of precision the end knife-edges are fixed on the top of the beam so as to present a continuous unbroken knife-edge, and the fulcrum knife-edge is also made continuous, the beam being cored out or cut away to admit of the introduction of the stand bearing.

Counter machines have an advantage over scale-beams in not being encumbered with suspension chains and the beam above.