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  2. Wratten number - Wikipedia

    en.wikipedia.org/wiki/Wratten_number

    1.31 / 3 ⁠ Cooling filter to increase the color temperature slightly. The opposite of 81A. Results in mired shift of -21. [9]: 38 82B pale blue: 1.4 ⁠ 2 / 3 ⁠ Cooling filter, slightly stronger than 82A and opposite of 81B. Can also be used when shooting tungsten type B film (3200 K) with household 100 W electric bulbs (2900 K).

  3. Emergency service response codes - Wikipedia

    en.wikipedia.org/wiki/Emergency_service_response...

    For example, in the Los Angeles Police Department's radio procedures, Code 1 is not a response code, and its meaning is transferred to Code 2, the original meaning of which is transferred to the semi-official response code "Code 2-High". Additionally, some agencies use "Code 99" which means for all units to respond, typically used in bomb ...

  4. List of optometric abbreviations - Wikipedia

    en.wikipedia.org/wiki/List_of_optometric...

    AC 3/4: Grade 3 anterior chamber angle: AC 2/4: Grade 2 anterior chamber angle: AC 1/4: Grade 1 anterior chamber angle: AC 0/4: Grade 0 anterior chamber angle: closed angle between cornea and iris AC/A: Accommodative convergence / Accommodation ratio the portion of the range of convergence that occurs in response to accommodation: Acc ...

  5. What 'secret' loudspeaker codes mean at department stores - AOL

    www.aol.com/news/2010-10-13-what-secret...

    This "code" is one of many innocuous sounding secret codes that. If you've been shopping in a big box retail store you've probably heard an announcement on the loudspeaker such as, "code yellow ...

  6. Police code - Wikipedia

    en.wikipedia.org/wiki/Police_code

    The Hundred Code is a three-digit police code system. [3] This code is usually pronounced digit-by-digit, using a radio alphabet for any letters, as 505 "five zero five" or 207A "two zero seven Alpha".

  7. Wire signal - Wikipedia

    en.wikipedia.org/wiki/Wire_signal

    A wire signal is a brevity code used by telegraphers to save time and cost when sending long messages. The best-known code was the 92 Code adopted by Western Union in 1859. The code was designed to reduce bandwidth consumption over telegraph lines, thus speeding transmissions by utilizing a numerical code system for frequently used phrases.

  8. Superflares could be more common than thought: Are they ...

    www.aol.com/superflares-could-more-common...

    December 12, 2024 at 2:01 PM Add solar superflares to the list of natural disasters of concern. Superflares are extremely strong solar flares – explosions with energies up to ten thousand times ...

  9. CDC warns of deadly drug 100 times more potent than ... - AOL

    www.aol.com/cdc-warns-deadly-drug-100-093050260.html

    Fentanyl has made headlines for driving overdose deaths, but the Centers for Disease Control and Prevention (CDC) is warning of the rise of an even deadlier drug. Last year, nearly 70% of all U.S ...