70 likes | 245 Views
Why Carbonless Paper?. Carbon Paper. History and why did/do we use it? - Early 1800’s century typewriters for the blind -Gained wide spread use in the 20 th century in business -Use has declined due to copiers and computers -Still is a need -origin of cc
E N D
Carbon Paper • History and why did/do we use it?-Early 1800’s century typewriters for the blind-Gained wide spread use in the 20th century in business-Use has declined due to copiers and computers-Still is a need-origin of cc • What were the problems?-Limited # of copies-Messy • Solution?
Carbonless Paper! • Advantages-Less Mess-No need for “repeated” use of one sheet. • How does it work?-That’s for you to figure out.
Carbonless Paper! • Get a sheet of carbonless paper. • Make observations. • Formulate a hypothesis. • Test that hypothesis • Form a conclusion • Answer the following questions…
How does carbonless duplicate paper work? 1.) What observations did you make? 2.) What data did you collect? 3.) How did you interpret your results? * What is your model for how the paper works?