Spectacular on Instagram: "Back in the 1960s, engineers developed something that felt ripped from the future: a needle-free injector. 💉⚡ Instead of breaking the skin with a needle, it used high-pressure liquid jets—fired faster than the speed of sound—to deliver medicine or vaccines. No needle, less pain, and a lower risk of infection. And this wasn’t just an experiment — it was actually used in mass vaccination campaigns around the world, long before “needleless” became a trend. — #Science #In