ignition hazard
81Fire — For other uses, see Fire (disambiguation). An outdoor fire using wood, termed a bonfire …
82Hydrogen peroxide — IUPAC name …
83Propane — Not to be confused with propene. Propane …
84Thermocouple — plugged to a multimeter displaying room temperature in °C. A thermocouple is a device consisting of two different conductors (usually metal alloys) that produce a voltage proportional to a temperature difference between either end of the pair of… …
85Nitrocellulose — Nitrocellulose[1] …
86Timeline of knowledge about galaxies, clusters of galaxies, and large-scale structure — Timeline of galaxies, clusters of galaxies, and large scale structure of the cosmosPre 20th Century* 400s BC Democritus proposes that the bright band in the night sky known as the Milky Way might consist of stars, * 300s BC Aristotle believes the …
87Airbag — An airbag is part of a vehicle s safety restraint system, a flexible envelope designed for rapid inflation in an automobile collision, to prevent vehicle occupants from striking hard interior objects such as steering wheels. It is considered a… …
88Triboelectric effect — Triboelectric series: Most positively charged + Air Human skin Leather Rabbit s fur Glass Quartz Mica Human hair …
89Ford Model T — Manufacturer Ford Motor Company Production 1908–1927 Assembly Detroit, US; Highland Park …
90Nuclear weapon design — The first nuclear weapons, though large, cumbersome and inefficient, provided the basic design building blocks of all future weapons. Here the Gadget device is prepared for the first nuclear test: Trinity. Nuclear weapon designs are physical,… …
