Which newly developed weapon was outlawed for use against Christians by the Lateran Council of 1139 under Pope Innocent II?

In 1910 which French engineer and chemist found that passing electrical current through inert gases produced light and proceeded to develop the neon lamp?

In 1891 who patented the first solar hot water system that was sold commercially?

In 1784, at the age of 29, who created a production line in which all movement throughout a grain mill was automatic?

Who is known for his formulation of a hydrostatic principle and for a device for raising water, created circa 250 BCE?

Which architect from Heliopolis is credited with the invention of Greek fire, a highly incendiary liquid that was projected from “siphons” toward enemy ships or troops?

Which English Franciscan philosopher and educational reformer was the first European to describe in detail the process of making gunpowder?

Which American statesman and inventor installed a rod on his home to test his theory that the tall metallic rod would attract lightning?

About the end of the 16th century, which Dutch optician and his son invented the first compound microscope?

Which German chemist’s discovery of beet sugar in 1747 led to the development of the modern sugar industry?

In 1780 which German Swedish chemist became the first to isolate lactic acid?

Which English chemist and meteorologist published the first table of atomic weights and invented a new system of chemical symbols?

Whose research on organometallic compounds made the industrial production of high-quality polyethylene possible?