Device
* Any device designed to produce lift or thrust when passed through air is an airfoil.
* Many devices depend on the transmission and reception of radio waves for their operation
  - make use of the fact that light can be refracted, reflected, and focused
  - use ultra-sonic sound like the ultrasound device for seeing an unborn child
* Most devices are made of materials.
* Most devices are powered by batteries
  - volt batteries
  - consume energy
  - continue to draw power even when turned off
  - control motors
* Most devices convert chemical energy
  - electrical energy
  - internal energy
  - kinetic energy
  - mechanical energy
* Most devices convert solar energy
  - light energy
  - thermal energy
  - depend on gravity to deliver the water and peristalsis to expel the fluid and debris
  - emit loud sound
* Most devices generate electrical energy
  - electricity
* Most devices have circuits
  - sensors
  - lose energy
* Most devices make electrical energy
  - noise
  - measure forces
  - perform liver functions
* Most devices produce electrical energy
  - ultrasonic sound
* Most devices provide a mean effective spherical diameter of particles regardless of their shape
  - regulate temperature
  - require electricity
* Most devices use electric current
  - magnetic forces
  - optical technology to read prints
* Some devices absorb heat
  - solar heat
  - actually experience a decrease in current as the applied voltage increases
  - allow people with limited sight to surf the Internet
* Some devices are made of compounds
  - submerged in water
  - used by physicians
  - capture energy
* Some devices change energy
* Some devices conduct electricity into the body
  - on the skin's surface
  - consist of deform materials
* Some devices contain circuits
  - electrical circuits
* Some devices convert electricity
  - sunlight
* Some devices detect charge
  - electrical charge
  - drive computers
* Some devices emit ejaculation
* Some devices generate dark current
  - microwaves
* Some devices have computer chips in ignition keys
  - energy storage
  - monochrome screens that display images in four shades of gray
  - help people with disabilities perform a given task
  - make use of the temperature's dependence on electric resistance to measure changes
* Some devices measure air flow electronically
  - chloride permeability
  - electrical resistance
  - humidity levels
  - wind
  - operate in moving air
* Some devices produce beams
  - laser beams
  - reduce energy
  - require magnets
* Some devices store elastic energy
  - potential energy
  - support the movement of information between a storage medium and processor
* Some devices transform electrical energy
  - frequency energy
* Some devices transform high energy
* Some devices turn energy
* Some devices use a candle or lightbulb to heat the oil and release the volatile scents
  - bone conduction
  - bulbs
  - electromagnetic waves
  - flashlight bulbs
* Some devices use in circuits
  - electric circuits
  - microphones
  - microwave radiation
  - output transducers to make connections between the product and the environment
  - sensitive microphones
  - vibrate and measure the attenuation which depends on viscosity and density
  - work with light, others with radio waves, X-rays or even electron waves
* are a small key devices, that handles the keyboard interface
  - artifacts
  - designs
  - emblems
  - inclination
  - located in workshops
* are made of exact same materials
  - maneuvers
  - used for purposes
* can mean printers, hard drives, floppy drives, networks, etc.
* consist of bases
  - filament
* contain aerosol generators
  - components
* emit loud click sound
* enable users.
  - enough energy
* give instruction.
* have advantage
  - applications
* have different electrical requirements
  - effects
  - gravity sensors
  - input
* have little effects
  - permanent effects
  - ranges
  - structures
* include generators.
* includes sections.
* is an emblem or design, usually on the fly
  - instrumentation
* make chirp noise
  - vertical forces
* perform different functions
  - tasks
* provide electrical energy
  - evidence
* receive power.
* require circuits
  - field operations
* run gadgets
* solve problems.
* use basic components
* use in activities
  - instruments
  - other instruments
  - tiny electric current