bungu on Instagram: "Kokuyo has released a new line of Campus stationery that redefines studying. Highlights include the Pen-Like Book Clip, Two-Hole Punch ruler, Study Planner, and matching Notebook Sticky Notes. The lineup also features A7 loose-leaf tools, precision erasers, pastel highlighters, Enpitsu Sharp pencils, and color-coordinated pen cases."

Physics Uncovered on Instagram: "Prof. Walter Lewin’s well-known basketball–tennis ball experiment is a classic way to show how elastic collisions and momentum transfer work. When the two balls are dropped at the same time, the basketball rebounds off the ground and passes much of its momentum to the tennis ball. As a result, the tennis ball shoots upward to a height far greater than its original drop point. This dramatic demonstration highlights the conservation of both energy and momentum duri