History Lesson #120

Telephone Carpet Sweeper Phonograph Moving Pictures Telephone Alexander Gram Bell was inspired by the telegraph, and Joseph Henry, to invent the telephone. Henry gave Bell advice and encouragement when Bell told him about his idea. The telephone allows us to communicate across long distances. Bell went on to create Bell telephone company, or AT&T (American …

History Lesson #110

Clothes Hanger Rotary Can Opener Mail Order Catalog Earmuffs Clothes Hanger Until the 1800’s, clothes were always stored in chests or drawers. O.A. North invented the clothes hanger in 1869 to store clothes without getting them wrinkled. Clothes can be stored in small spaces without being wrinkled. There is not much space in an apartment …

Camera Focus

Here is what I learned about focus: focus is weather your image is sharp or blurry. A sharp subject would be an in-focus subject. A blurry subject is an out-of-focus subject. You can use your aperture to control depth of field, which is how much of your background and foreground are in focus. If you …