Usually a single, short paragraph very dense in specific information with one idea or focus per sentence. Be as to the point as possible. Meant to capture attention. What was the main aspect or goal(s) of the experiment? What device or experimental method was used? What was measured? What was the main result(s)? If a specific quantity was measured state your final value along with its error (uncertainty) and give the expected reference value that it was compared to. *From this point on, starting with the Background, everything is in two columns and justified alignment. Format the page and body so that ~70 characters fit per line