Fall & Spring Semesters. 1  Undergraduate students must be enrolled in at least 12 credit hours to be considered full time and enrolled in at least nine hours in order to be three-quarter time. 2  Enrollment in six to eight hours is considered half time and enrollment in five or fewer hours is considered less than half time.
Yep you've got the abbreviations right. Av = aperture value = aperture priority auto exposure Tv = time value = shutter priority auto exposure Both of these modes allows you to set a firm value for either aperture or shutter speed, and let the camera work out the exposure needed.
Cathode Ray Tube - (Electronic Television) The advent of electronic television is based on the development of the cathode ray tube, which is the picture tube found in modern TV sets. German scientist Karl Braun invented the cathode ray tube oscilloscope (CRT) in 1897.