The man who discovered microwaves measured a flower’s heartbeat in 1926
In August 1926, Jagadish Chandra Bose walked into an Oxford lecture hall carrying a snapdragon stem. He hooked it to one of his handmade instruments, told the audience they were watching the plant’s heartbeat, and pointed to a tracing that rose and fell in rhythm. He soaked the stem in bromide — a sedat…
