Explaining The Universe on Instagram: "Follow (us) @ExplainingTheUniverse to learn something NEW every day 🧠 Contact lenses are made through a precise process using special plastics like hydrogel or silicone hydrogel. First, a tiny disc of the material is shaped using either lathe-cutting (where a machine carves the lens from a solid piece) or molding (where liquid plastic is poured into molds and cured with heat or UV light). The lenses are then polished, hydrated in a solution to make them so

Technology on Instagram: "When luminol comes into contact with bleach, a chemical reaction begins instantly. Bleach, a strong oxidizer, pulls electrons from luminol, pushing them into a higher, “excited” energy state. As these electrons return to their normal state, they release energy as tiny flashes of blue light—photons. This is what causes the glowing blue effect. The glow fades as the electrons settle, leaving the solution dark once again. Via: @nd8.136a / Dr. Kendra Frederick #technology #