### fixtures | lighting fixture | fluorescent:

Fluorescent lighting
* comes in a variety of soft colors.
* depends on the electrical excitation of mercury vapor.
* disperses a blue-white light evenly and without shadows over a wide area.
* is about four times as efficient as incandescent lighting.
* is more economical and produces less heat and glare
  - than incandescent lighting
  - one of the more common sources of electrostatic noise
* is preferred over that of incandescent
  - to incandescent lighting
  - softer than regular lighting
  - used mostly for interior lighting, but more and more for outdoor lighting

Indirect lighting
* is critical to the realistic appearance of interior spaces in particular
  - ideal for libraries because it provides even illumination on vertical surfaces
* lighting fixture

### flagellated cell:

Collar cell
* are the work horses of the sponge.
* flagellated cell
* form one layer, and epidermal cells for the other.
* line the inner cavity.
* produce a constant flow of water into the sponge.

### flags:

American flag
* abound on postcards, greeting cards, invitations and the like.
* are flags
  - located in moons
  - symbols
* fly on veterans' graves.

### flammable liquid:

Cyclohexanol
* flammable liquid.
* is alcohol

### flammable liquid:

Isopropyl alcohol
* can cause eye irritation
  - damage the eyes severely
  - remove the stuff with some difficulty, but at least it's harmless to plastic
* has a low flashpoint.
* has slight chronic toxicity to aquatic organisms
  - toxicity to aquatic life
  - available through most chemical supply houses
  - chemical compounds
  - labeled as distilled water
  - lipophilic
  - metabolized to acetone in the liver by alcohol dehydrogenase
  - only reportable if it is being manufactured using the strong acid process
  - perfectly safe
* mild eye and mucous membrane irritant and central nervous system depressant.
* works nicely because it contains water.

Decomposition product
* Most decomposition products arise from decay.
* are flammable.
* can include carbon monoxide, carbon dioxide, and water vapor.
* generated from molten polymer can autoignite.

Flap
* Most flaps serve respiratory functions.
* Some flaps stretch between bones.
* are airfoils
  - covering
  - large pieces of hair covered scalp that are rotated to replace a section of bald scalp
* are part of airplanes
  - wings
  - waves
* cause pain both at the donor site and in the breast area.
* cover gill slits
* includes sections.
* present a greater surface for the wind to act upon when the airplane is rolling on the ground.
* prevent blustery breezes
* protect gills.
* provide airtight seals
* serve functions
* work as a function of alpha and airspeed.

### flap:

Cuff
* Some cuffs are part of coats
  - diapers
  - garments
  - underwears
* are laps.
* are part of legs
  - sleeve
* electrodes for chronic stimulation and recording of peripheral nerve activity.
* is overlap

Dag
* activates protein kinase C in the R-cells.
* are faeces stuck to the wool of a sheep, which rattle if dry.
* is an important metabolite during acrosomal exocytosis
  - released from membrane phospholipids in response to the binding of a variety of agonists
* prevents postprandial increase in blood triglyceride in addition to preventing fat deposits.

### flap | haw:

Mayhaw
* are hawthorns
  - less care native small trees with showy white blossoms and good fall leaf color
* have a tendency to produce an open canopy at maturity.

### flats:

Foyer
* Some foyers are part of skyscrapers.
* are flats.
* are located in apartments
  - buildings
  - entries
  - homes
  - houses
  - mansions
  - part of houses
  - rooms
  - used for conserving energy
* includes bases
  - ceilings
  - doorways
  - floors
  - room light
  - walls