TechnologyARMY on Instagram: "Before electricity lit our cities, miners relied on chemistry to light their world. 💡⛏️ A vintage calcium carbide lamp worked through a simple but genius reaction — water dripped onto calcium carbide, creating acetylene gas, which burned with a bright, steady white flame. By adjusting the drip rate, miners could literally control how much light they had underground. These lamps were dependable, portable, and vital — a perfect blend of science and survival that guid

MRS PLIES on Instagram: "I really needed someone to help with the lightings for this challenge, found him in the shower🙂‍↔️ • • Shop @janemenaglitz ❤️"

Downtown SF on Instagram: "Get ready to glow! ✨ Let’s Glow SF, the nation’s largest FREE holiday projection arts festival, is making a triumphant return to downtown San Francisco for its fifth and grandest year yet! 🗓️ December 5–14, 2025 ⏰ Nightly shows 5:30–10:00PM Hosted by the Downtown SF Partnership (@sf_downtown), this family-friendly event is the perfect excuse to bundle up, get outdoors, and embrace the holiday spirit! With a total of 8 landmark buildings and 3 additional activations fe