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  2. Optical beam smoke detector - Wikipedia

    en.wikipedia.org/wiki/Optical_beam_smoke_detector

    An optical beam smoke detector is a device that uses a projected beam of light to detect smoke across large areas, [1] typically as an indicator of fire. [2] They are used to detect fires in buildings where standard point smoke detectors would either be uneconomical [ 3 ] or restricted for use by the height of the building.

  3. Fireproofing - Wikipedia

    en.wikipedia.org/wiki/Fireproofing

    Fireproofing is rendering something (structures, materials, etc.) resistant to fire, or incombustible; or material for use in making anything fire-proof. [1] It is a passive fire protection measure. "Fireproof" or "fireproofing" can be used as a noun, verb or adjective; it may be hyphenated ("fire-proof").

  4. List of fire-retardant materials - Wikipedia

    en.wikipedia.org/wiki/List_of_fire-retardant...

    Fire-retardant materials should not be confused with fire-resistant materials. A fire resistant material is one which is designed to resist burning and withstand heat. An example of a fire-resistant material is one which is used in bunker gear worn by firefighters to protect them from the flames of a burning building.

  5. Passive fire protection - Wikipedia

    en.wikipedia.org/wiki/Passive_fire_protection

    Fire-resistance rated wall assembly with fire door, cable tray penetration and intumescent cable coating. Passive fire protection (PFP) is components or systems of a building or structure that slows or impedes the spread of the effects of fire or smoke without system activation, and usually without movement. [1]

  6. Short backfire antenna - Wikipedia

    en.wikipedia.org/wiki/Short_backfire_antenna

    A short backfire antenna (or short back-fire, SBA, SBF or SBFA) is a type of a directional antenna, characterized by high gain, relatively small size, and narrow band. It has a shape of a disc with a straight edge, with a vertical pillar with a dipole acting as the driven element in roughly the middle and a conductive disc at the top acting as ...

  7. Contract for controversial entrance exam into ‘elite’ NYC ...

    www.aol.com/news/contract-controversial-entrance...

    Last year, close to 26,000 students took the exam with just over 4,000 offered a seat. Of that, 4.5% of offers went to Black students and 7.6% to Latino students, according to city data.

  8. Safety data sheet - Wikipedia

    en.wikipedia.org/wiki/Safety_data_sheet

    An example SDS, including guidance for handling a hazardous substance and information on its composition and properties. A safety data sheet (SDS), [1] material safety data sheet (MSDS), or product safety data sheet (PSDS) is a document that lists information relating to occupational safety and health for the use of various substances and products.

  9. Reba McEntire Comedy ‘Happy’s Place’ Gets Full Season Pick Up ...

    www.aol.com/reba-mcentire-comedy-happy-place...

    The NBC comedy series “Happy’s Place” has received an order for additional episodes at NBC. The freshman multi-cam comedy has been picked up for five more episodes, bringing the total ...