Add punctuation: Theres a couple of obvious reasons for this Smartphone cameras are pretty good now but there is still room for improvement
A: There's a couple of obvious reasons for this. Smartphone cameras are pretty good now but there is still room for improvement.

Add punctuation: The rhythm is created by a rotating plate with holes through which a number of small bulbs illuminates activates photoelectric cells These cells are part of the oscillator circuit of the tubes and thus determines the speed of the rhythm
A: The rhythm is created by a rotating plate with holes through which a number of small bulbs illuminates (= activates) photo-electric cells. These cells are part of the oscillator circuit of the tubes - and thus determines the speed of the rhythm.

Add punctuation: 19 January 2009 Comments Off on Boat engines valued at about 60000 Ensuring
A:
19. January 2009 Comments Off on Boat engines valued at about. 60.000 Ensuring