Template:Are You Sure/April 24

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Franck–Hertz experiment

in instructional laboratories. There is a droplet of mercury inside the tube (not visible in the photograph). The cathode (C) is electrically heated (note the orange glow), emitting electrons which pass through the metal mesh grid (G) which are collected as an electric current by the anode (A).]]

• ... that physicist and clergyman Jean-Antoine Nollet (1700–1770) investigated electrospray, notingd that water flowing from a vessel would aerosolize if the vessel was electrified and placed near electrical ground. He also noted that similarly "a person, electrified by connection to a high-voltage generator, would not bleed normally if he were to cut himself; blood would spray from the wound."?