World_of _Facts on Instagram: "This isn’t sci-fi — it’s real technology! A special LED hologram fan spins at ultra-high speed, and when the lights flash in perfect sequence, your eyes see a floating 3D image suspended in mid-air. 👀✨ No screens. No projectors. Just pure holographic magic created through persistence of vision. These hologram fans are now used in: ✔️ Shops & malls for eye-catching ads ✔️ Events & concerts ✔️ Museums ✔️ Futuristic displays and art A simple spinning blade… turning i