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2. Parabolic aluminized reflector - Wikipedia

   en.wikipedia.org/wiki/Parabolic_aluminized_reflector

   As with the case of LED MR lamps, LED PAR lamps generally use an array of individual LED elements that are unsuitable for reflector operation. Nevertheless, some degree of beam control can be obtained with aperture or lens, and LED PAR 38 replacements with a 40° spread is common. Models built for stage lighting may use less similar dimensions.

3. Stage lighting instrument - Wikipedia

   en.wikipedia.org/wiki/Stage_lighting_instrument

   The number associated with a PAR light (e.g.: Par 64, Par 36, Par 16) indicates the diameter of the lamp in eighths of an inch. [9] Four different beam angles can be obtained on the PAR-64. The beam angle is determined by the lamp. Lamps come in "very narrow" (6° x 12°), "narrow" (7° x 14°), "medium" (12° x 28°), and "wide" (24° x 48°).

4. LED stage lighting - Wikipedia

   en.wikipedia.org/wiki/LED_stage_lighting

   LED stage lights come in three main types. PAR cans, striplights [1] and 'moving head' types [citation needed]. In LED PAR cans, a round printed circuit board with LEDs mounted on is used in place of a PAR lamp. Moving head types can either be a bank of LEDs mounted on a yoke or more conventional moving head lights with the bulb replaced with ...

5. MIM-23 Hawk - Wikipedia

   en.wikipedia.org/wiki/MIM-23_Hawk

   The Hawk XXI or Hawk-21 is a more advanced, and more compact version of Hawk PIP-3 upgrade. Hawk-XXI basically eliminates the PAR and CWAR radars with the introduction of 3D MPQ-64 Sentinel radars. Norway's Kongsberg Company provides an FDC (Fire Distribution Center) as it is used in NASAMS system in Norway. The missiles are upgraded MIM-23K ...

6. Extended Display Identification Data - Wikipedia

   en.wikipedia.org/wiki/Extended_display...

   Extended Display Identification Data (EDID) and Enhanced EDID (E-EDID) are metadata formats for display devices to describe their capabilities to a video source (e.g., graphics card or set-top box).

7. GPO telephones - Wikipedia

   en.wikipedia.org/wiki/GPO_telephones

   This would comprise a very ordinary 700 type instrument, with a push button mod. kit fitted. Beneath the smart-looking buttons, a small converter circuit, powered by re-chargeable Ni-Cd cells, would convert the button presses back to perfectly normal, 10 impulse per second, loop-disconnect dial output, i.e. the new keypad was made to simulate ...