We remember Charles Babbage (1792-1871) for what ?

Correct Answer: Play-Doh

Correct Answer: 1860s

Correct Answer: Sandford Fleming

Explanation:

Sir Sandford Fleming, (January 7, 1827 ? July 22, 1915) was a Scottish Canadian engineer and inventor. Born and raised in Scotland, he emigrated to colonial Canada at the age of 18. He proposed worldwide standard time zones, designed Canada's first postage stamp.

Correct Answer: Sir William Grove

Correct Answer: Chloroform

Correct Answer: Vacuum cleaner

Correct Answer: Parachute

Correct Answer: Karl Benz

Correct Answer: Alfred Nobel

Explanation:

Alfred Bernhard Nobel was a Swedish chemist, engineer, inventor, businessman, and philanthropist. Known for inventing Dynamite, Nobel also owned Bofors, which he had redirected from its previous role as primarily an iron and steel producer to a major manufacturer of cannon and other armaments.

Correct Answer: Benjamin Franklin

Explanation:

Benjamin Franklin has long been credited with the invention of bifocal lenses and he was the first to wear bifocal lenses. He did not produce them himself but instead had some optician in London or France make them for him to overcome Presbyopia, a condition that Franklin suffered. He was tired switching between lenses for far and near sightedness. And that resulted in inventing Bifocal Lenses.