### device | instrument:

Flagpole
* includes eyepieces
* is staff

Gravimeter
* is an instrument
* respond only to the vertical component of g of an anomalous mass.

Hydrometer
* are a fairly simple and inexpensive means of obtaining salinity
  - metal probes that measure the pile's moisture level
* is an instrument
* look like big thermometers with weighted bottoms.
* only work for the ethylene glycol based antifreeze coolant.

Impeachment
* are legal documents.
* occurs frequently at the state level of American politics.

Infrared instrument
* have application in the study of earth's resources from space and aircraft.
* used for astronomical observation have to be placed high up in the atmosphere.

Integrator
* are companies that own chickens literally from the egg to the final product
  - components dedicated to extracting data from a particular type of source
* generally own breeder flocks, hatcheries, feed mills, and processing plants.

Interferometer
* are at the core of gravitational wave detectors
  - optical instruments employed to study light characteristics
* produce overlapping wave patterns from the radiation.
* provide high accuracy measurements with sub-nanometer resolution.

Lidar
* can measure atmospheric density, temperature, winds, as well as dust and pollutants.
* operate in the ultraviolet , visible and infrared region of the electromagnetic spectrum.
* relies on the light scattering properties of the atmoshere.
* send a short pulse of light energy from a laser at a target.
* works by sending pulses of laser energy to the Earth's surface
  - like radar but uses pulsed laser light rather than radio waves

### device | instrument | magnifier:

Microscope
* Learn how to use a microscope and look at the world in a whole new perspective.
* Many microscopes nowadays use infinity-corrected objectives
  - still offer Huygenian-type eyepieces
* Most microscopes change intensity by changing the voltage to the lamp
  - therefore have a lens called a condensor just below the specimen slide
* Most microscopes use a mirror or electric light underneath an object to light it up
  - lenses to magnify the image of an object by focusing light or electrons
* Operate a compound light microscope.
* Some microscopes allow scientists
  - create environments
  - pass, or transmit, electrons through a thin slice of an object
  - provide overall height measurement
* Some microscopes use effects
  - lenses and lights
* also allow people to watch living things in action
  - can help researchers identify cancer cells with irregular shapes
  - reveal the amazing world beyond the limitations of the human eye
* are a vital tool of the microbiologist
  - among the most misused laboratory instruments
  - laboratory equipment
  - located in laboratories
  - tools used to enlarge small objects so as they can be studied
  - used in surgeries, such as cataract surgery and brain surgery
* are used to look at things that are too small to be seen by the unaided eye
  - see things too small for the naked eye
  - study jewels and identify stones
* can get far out of alignment easily and quickly
  - show a whole other world
* have a short focal length objective and a longer focal length eye-piece
  - ability
  - two general purposes
* help scientists see objects invisible to the naked eye.
* includes sections.
* make it possible to see that living things are made mostly of cells.
* perform functions
  - similar functions
* provide details.
* range from a simple magnifying glass to the expensive electron microscope.
* scientific instrument
* use electrons instead of light to create an image
* vary wildly as to what lamp they use.

### device | instrument | magnifier | microscope:

Confocal microscope
* All confocal microscopes use laser light to scan biological specimens across three dimensions.
* tend to be large, expensive, and relatively slow to produce an image.