ELi5 | SM on Instagram: "An antique gasoline blowtorch worked by using liquid fuel and basic principles of heat, pressure, and combustion to produce a powerful, focused flame. Inside the metal body of the torch was a small fuel tank filled with gasoline. Before lighting, the user first preheated the torch by burning a little fuel in a shallow cup beneath the nozzle. This preheating step was essential because gasoline needs to turn into vapor to burn cleanly and steadily. As the metal around the

Inovinate on Instagram: "Ever noticed fuel feels different depending on the time of day? ⛽📉 That’s not your imagination — it’s physics. Fuel expands when it’s hot and contracts when it’s cold. While the pump always delivers the same volume, the energy inside that volume changes with temperature. During the day, heat causes gasoline and diesel to expand underground, making them slightly less dense — meaning marginally less energy per liter or gallon. At night, cooler temperatures keep fuel dense