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  2. Transparency (graphic) - Wikipedia

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

    an image that is not rectangular can be filled to the required rectangle using transparent surroundings; the image can even have holes (e.g. be ring-shaped) in a run of text, a special symbol for which an image is used because it is not available in the character set, can be given a transparent background, resulting in a matching background.

  3. See-through display - Wikipedia

    en.wikipedia.org/wiki/See-through_display

    The development of practical transparent displays accelerated rapidly around the end of first decade of the 21st century. An early commercial transparent display was the Sony Ericsson Xperia Pureness released in 2009, although it did not succeed in the market due to the screen not being visible outside or in brightly lit rooms.

  4. Category : Images that should have transparent backgrounds

    en.wikipedia.org/wiki/Category:Images_that...

    Media in category "Images that should have transparent backgrounds" The following 105 files are in this category, out of 105 total. 111th Battle For The Bell.jpeg 370 × 208; 33 KB

  5. Megaphone - Wikipedia

    en.wikipedia.org/wiki/Megaphone

    Generally, female cheerleaders would use pom poms while male cheerleaders, with loud booming voices, would project cheers through megaphones. [10] Vocal projection is an important aspect for cheerleading, so experts recommend the use of acoustic megaphones not only to increase the volume of sound, but also to protect performers’ voices in the ...

  6. Transparency (projection) - Wikipedia

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

    Overhead projector in operation, with a transparency being flashed. A transparency, also known variously as a viewfoil or foil (from the French word "feuille" or sheet), or viewgraph, is a thin sheet of transparent flexible material, typically polyester (historically cellulose acetate), onto which figures can be drawn.

  7. Public address system - Wikipedia

    en.wikipedia.org/wiki/Public_address_system

    A woman using a small handheld electric megaphone at a demonstration in Portugal. Electric megaphones use a type of horn loudspeaker called a reflex or reentrant horn. In the 1960s, an electric-amplified version of the megaphone, which used a loudspeaker, amplifier and a folded horn, largely replaced the basic cone-style megaphone.

  8. Cheer Athletics - Wikipedia

    en.wikipedia.org/wiki/Cheer_Athletics

    Cheer Athletics began in May 1994 when co-founders Jody Melton and Angela Rogers began their first practice with 2 athletes at a local park in Plano, TX. 1995-1996. The 1995-96 season brought many new challenges. Cheer Athletics had more than tripled in size since nationals, with 3 main teams: Panthers, Tigers, Jags.

  9. Cheerleading - Wikipedia

    en.wikipedia.org/wiki/Cheerleading

    Youth cheerleaders during a football halftime show. Youth cheer—high school ages and younger—make up the vast majority of cheerleaders and cheer teams. Organizations that sponsor youth cheer teams usually sponsor either youth league football or basketball teams as well. This allows for the two, under the same sponsor, to be intermingled.