1 Algorithm based on impact on opinions over time - and Wikipedia. 2  Top ten most significant in history puts Jesus in the number one spot.  The list also includes Muhammad, Lincoln, Hitler and Shakespeare.
Plies vary in thickness from 1.4 mm to 4.3 mm. The number of plies depends on the thickness and grade of the sheet but at least three are required as the minimum odd number of plies. Roofing can use the thinner 5/8 (15 mm) plywood.
Aircraft plywood is available in thicknesses of 0.4 mm (3 ply construction) and upwards, typically aircraft plywood uses veneers of 0.5 mm thickness although much thinner veneers such as 0.1 mm are also used in construction of some of the thinner panels.