1. Lightning Conductor   Samuel Morse   Benjamin Franklin   Thomas Alva Edison   Sir Alexander Graham Bell   Hint Half-n-half Clue   2. Diesel Engine   Rudolf Diesel   Benjamin Franklin   Thomas Alva Edison   Sir Alexander Graham Bell   Half-n-half Clue   3. Mercury Thermometer   Sir Alexander Graham Bell   Fahrenheit   Samuel Morse   Elisha G. Otis   Half-n-half Clue   4. Aeroplane   Fahrenheit   Benjamin Franklin   Michael Faraday   Orville and Wilbur Wright   Half-n-half Clue   5. Telephone   King C. Gillette   Fahrenheit   Orville and Wilbur Wright   Sir Alexander Graham Bell   Half-n-half Clue   6. Bifocal Lens   Michael Faraday   Alfred B. Nobel   Benjamin Franklin   John Boyd Dunlop   Half-n-half Clue   7. Dynamite   Alfred B. Nobel   Michael Faraday   Benjamin Franklin   King C. Gillette   Half-n-half Clue