Back in the days of 35mm film, a 50mm prime was considered a 'standard' lens. That's because it gives pretty much the same perspective as viewing a scene with the human eye, without the magnification of a telephoto lens or the shrinkage a wide-angle lens uses to squeeze more into the frame.
The flexi disc (also known as a phonosheet or Soundsheet, a trademark) is a phonograph record made of a thin, flexible vinyl sheet with a molded-in spiral stylus groove, and is designed to be playable on a normal phonograph turntable.
Rating Newest Oldest. Best Answer: Intercalated discs are areas where cardiac muscle cells (among a few other cell types) are joined together. These discs contain gap junctions, which are small pores that connect the cytoplasm of one cell to the next. In other words, the membranes of the cells are fused together, and there are tiny holes that connect the interior of the adjacent cells.