### device:

Beam
* Most beams have energy
  - weight
  - pass through air
  - produce heat
* Some beams are used by detectors
  - cause waves
* Some beams pass through materials
  - optical materials
* are capable of rays of light
  - electromagnetic radiation
* are located in barns
  - bridges
  - buildings
  - ceilings
  - construction sites
  - gyms
  - houses
  - large buildings
  - new construction
  - roofs
  - warehouses
  - pieces
  - sides
  - structural members
* are used for holds
  - scans
  - support
  - width
* formed by circular array is sensitive to surface sound velocity.
  - ranges
* includes photons
  - sections
* produce enough heat

### device | beam:

Cantilever
* are beams.
* overhang the sides of walls and distribute and balance loads on the opposite sides.

Cathode ray
* are a phenomenon which occurs when electricity is discharged in a rarified gas
  - beams of negatively-charged particles called electrons
* are streams of electrons
  - fast-moving neutrons

Girder
* extend from nose to tail, or in nautical parlance, from stem to stern.
* includes sections.

Particle beam
* All particle beams start from a particle source.
* Most particle beams produce enough heat
* are special sorts of electro-magnetic waves, a special sort of light.
* containing very large numbers of particles display complex collective dynamics.

### device:

Bell
* Most bells are made of metal.
* Most bells have pure tones
* Some bells are dangerous at the top where they attach to a chain.
* Some bells have linear lobes
  - petals.
  * A 'bell' simple musical instrument. Most bells are made of metal. Bells are also in churches to announce the time between hours
  - and always have been peculiarly associated with the life of universities
* are capable of rangs
  - rings
  - curves
* are located in boats
  - cabinets
  - churchs
  - front doors
  - schools
  - openings
* are part of carillons
  - funnels
  - trumpets
  - wind instruments
  - percussion instruments
  - sweet peppers which are grown primarily for fresh market
  - the sound dominant of every locality in the old towns and villages in Slovakia
  - time units
* are used for calling
  - ringing
  - tolls
* come in a wide variety of forms.
* have clappers
* help keep track of horses and make strayed horses much easier to find.
* includes sections.
* rang every hour, the number of strokes indicating the time.
+ African Sanctus, Description of the music: Choral compositions :: World music
  * Movement V has the song of a cattle boy in the deserts by the Red Sea Hills. Bells announce the birth of a baby boy.
+ Tony Award for Best Musical, Awards and nominations
  * Bells Are Ringing'. Book and lyrics by Betty Comden and Adolph Green, music by Jule Styne.

### device | bell:

Coral bell
* perform best in well-drained soils and partial shade to full sun.
* tolerate quite dry areas and still seem to bloom.

Biometric device
* are creditors latest weapons in combating fraud and theft
  - quite costly and are for highly secure environments
* automate the personal recognition process.
* identify people by physical traits such as fingerprints, irises, faces, or voices.
* measure one or more physical attributes.
* use a person's physical characteristics to verify an identity
  - one or more biometric parameters to identify the individual
  - personal characteristics to verify a user's identity