#1Combustionby Duncan MacPhun1113913N.Otto was selling 634, 3 hp piston engines a year by 1875 and, between 1908 and 1927, Ford sold over 4 million Model T automobiles. In 1903 the Wright Brother's engin...Completedentropycarnot-cyclekelvin+22 more #2Canada's Missing V-2 Rocketby Harold A. Skaarup47101militaryv-2prizes+5 more