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  2. Spacer GIF - Wikipedia

    en.wikipedia.org/wiki/Spacer_GIF

    The reason a spacer GIF is invisible is so that an HTML developer can create a table cell and fill the background with a specific color that can be viewed through the transparent spacer GIF. For instance, a developer seeking to create a square blue box 500 pixels on a side could use a separate blue 500×500 graphic at the expense of additional ...

  3. Visual snow syndrome - Wikipedia

    en.wikipedia.org/wiki/Visual_snow_syndrome

    The dots are usually black/gray on a white background and gray/white on a black background; however, they can also be transparent, white flashing, or colored. Presence of at least 2 additional visual symptoms of the 4 following categories: i. Palinopsia. At least 1 of the following: afterimages or trailing of moving objects. ii.

  4. Transparency (graphic) - Wikipedia

    en.wikipedia.org/wiki/Transparency_(graphic)

    GIF animation of an Apollonian sphere packing with transparent background. Transparency in computer graphics is possible in a number of file formats. The term "transparency" is used in various ways by different people, but at its simplest there is "full transparency" i.e. something that is completely invisible. Only part of a graphic should be ...

  5. GIF - Wikipedia

    en.wikipedia.org/wiki/GIF

    The Graphics Interchange Format (GIF; / ɡ ɪ f / GHIF or / dʒ ɪ f / JIF, see § Pronunciation) is a bitmap image format that was developed by a team at the online services provider CompuServe led by American computer scientist Steve Wilhite and released on June 15, 1987.

  6. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  7. Palpitations - Wikipedia

    en.wikipedia.org/wiki/Palpitations

    It may also be helpful to know about their caffeine intake, if deep breathing or changing positions can stop the palpitations, or how the palpitations start and stop - do they begin and end suddenly or gradually, does the heartbeat feel regular or irregular, how fast does the pulse get during an episode, etc.

  8. Collapsing pulse - Wikipedia

    en.wikipedia.org/wiki/Collapsing_pulse

    Watson's water hammer pulse, also known as Corrigan's pulse or collapsing pulse, is the medical sign (seen in aortic regurgitation) which describes a pulse that is bounding and forceful, [1] rapidly increasing and subsequently collapsing, [2] as if it were the sound of a water hammer that was causing the pulse.

  9. Flip-flop (electronics) - Wikipedia

    en.wikipedia.org/wiki/Flip-flop_(electronics)

    When several transparent latches follow each other, if they are all transparent at the same time, signals will propagate through them all. However, following a transparent-high latch by a transparent-low latch (or vice-versa) causes the state and output to only change on clock edges, forming what is called a master–slave flip-flop.