Aluminium foil with all metallic items, aluminium foil reacts to being placed in a microwave oven. This is because of the electromagnetic fields of the microwaves inducing electric currents in the foil and high potentials at the sharp points of the foil sheet; if the potential is sufficiently high, it will cause electric arcing to areas with lower potential, even to the air surrounding the sheet. Modern microwave ovens have been designed to prevent damage to the cavity magnetron tube from microwave energy reflection, and aluminium packages designed for microwave heating are available. Heavier foils made of aluminium are used for art,
ChapStick popular lipstick-style tube for their lip balm products. In Iceland and in the United Kingdom, the product's main competitor is Lypsyl, made by Novartis Consumer Health and distributed in similar packaging to ChapStick. In the early 1880s, Dr. Charles Browne Fleet, a physician and pharmacological thinker from Lynchburg, Virginia, invented ChapStick as a lip balm. The handmade product, which resembled a wickless candle wrapped in tin foil, was sold locally, and did not have much success. In 1912, John Morton, also a Lynchburg resident, bought the rights to the product for five dollars. In their family kitchen, Mrs. Morton melted