Short summary of image manipulation concept of orientation(Photography)

Why were staff lines an important improvement to musical notation a. sl indicated rhythm b. sl indicated dynamics c. sl indicated pitch d. sl indicated meter

Which statement is true with regard to beethoven? a. ludwig vin kochel catalogued more than six hundred of his compositions. b. he was the official composer for the powerful and rich eszterhazy family. c. he produced the best piano sonatas and the “ninth symphony” after losing his hearing. d. he wrote the well-known opera “the magic flute” during the last years of his life.

When you shoot using the lowest number possible for your aperture what is it called