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  2. 2,3,3,3-Tetrafluoropropene - Wikipedia

    en.wikipedia.org/wiki/2,3,3,3-Tetrafluoropropene

    2,3,3,3-Tetrafluoropropene, HFO-1234yf, is a hydrofluoroolefin (HFO) with molecular formula CH 2 =CFCF 3. Its primary application is as a refrigerant with low global warming potential (GWP). [1] [2] As a refrigerant, it is designated R-1234yf [1] and marketed under the names Opteon YF by Chemours and as Solstice YF by Honeywell. [3]

  3. DJI Mavic - Wikipedia

    en.wikipedia.org/wiki/DJI_Mavic

    DJI announced the Mavic Mini on October 30, 2019 as a replacement for the now discontinued DJI Spark and positioning it as a beginner camera drone. [1] [2] Its camera is on a three-axis gimbal and features a 12 MP sensor capable of 2.7K video at 30 FPS. [3] The Mavic Mini shares similar design characteristics with the Mavic Pro and Mavic 2 ...

  4. Free and open-source software - Wikipedia

    en.wikipedia.org/wiki/Free_and_open-source_software

    "Free and open-source software" (FOSS) is an umbrella term for software that is simultaneously considered both free software and open-source software. The precise definition of the terms "free software" and "open-source software" applies them to any software distributed under terms that allow users to use, modify, and redistribute said software in any manner they see fit, without requiring ...

  5. List of ray tracing software - Wikipedia

    en.wikipedia.org/wiki/List_of_ray_tracing_software

    List of ray tracing software. Ray tracing is a technique that can generate near photo-realistic computer images. A wide range of free software and commercial software is available for producing these images. This article lists notable ray-tracing software. Software.

  6. Free software movement - Wikipedia

    en.wikipedia.org/wiki/Free_software_movement

    Free software movement. The free software movement is a social movement with the goal of obtaining and guaranteeing certain freedoms for software users, namely the freedoms to run, study, modify, and share copies of software. [1] [2] Software which meets these requirements, The Four Essential Freedoms of Free Software, is termed free software .

  7. Free software - Wikipedia

    en.wikipedia.org/wiki/Free_software

    Shown are the GNOME desktop environment, the GNU Emacs text editor, the GIMP image editor, and the VLC media player. Free software, libre software, or libreware [1] [2] is computer software distributed under terms that allow users to run the software for any purpose as well as to study, change, and distribute it and any adapted versions.

  8. Emergency service response codes - Wikipedia

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

    United States[edit] In the United States, response codes are used to describe a mode of response for an emergency unit responding to a call. They generally vary but often have three basic tiers: Code 3: Respond to the call using lights and sirens. Code 2: Respond to the call with emergency lights, but without sirens.

  9. Three-two pull down - Wikipedia

    en.wikipedia.org/wiki/Three-two_pull_down

    Three-two pull down ( 3:2 pull down) is a term used in filmmaking and television production for the post-production process of transferring film to video . It converts 24 frames per second into 29.97 frames per second, converting approximately every four frames into five frames plus a slight slow down in speed.