21. First, to qualify as Private Copying, the copy must be made onto an " audio recording medium ". 22. Because of the nature of the recording medium , playback of many cylinders can cause degradation of the recording. 23. On the original 1968 album and its 1987 CD reissue the performances were edited to accommodate the recording medium . 24. When commercialized in the late 1960s as a recording medium , DuPont assigned it the tradename of " Magtrieve ". 25. The movie camera is a type of photographic camera which takes a rapid sequence of photographs on recording medium . 26. Broadcasters also sought a recording medium that was not as costly or time-consuming to edit and develop as film. 27. The recording medium is located where this light, after being reflected or scattered by the subject, will strike it. 28. A tachograph system comprises a sender unit mounted to the vehicle gearbox, the tachograph head and a recording medium . 29. The recording medium was a sheet of soot-coated paper wrapped around a rotating cylinder carried on a threaded rod. 30. The optimum format for a broadcast depends upon the type of videographic recording medium used and the image's characteristics.