I recently started using a 50-year-old vacuum-seal flask that belonged to my Grandpa so that I don’t have to leave the dungeon as often to procure more caffeine. Besides looking totally awesome on my ...

His name was Sir James Dewar, and he is noted for inventing what was first known as “The Vacuum Flask.” The product was able to keep a chemical placed in a flask at a stabilized temperature. Dewar ...