With the right conditions underneath AC power lines, you can light (dimly) a standard fluorescent tube by, literally, grounding one end of it. Gets turned into

With the right conditions underneath AC power lines, you can light (dimly) a standard fluorescent tube by, literally, grounding one end of it. Gets turned into an art project now and then: https://www.bbc.co.uk/bristol/content/madeinbristol/2004/02/18/field.shtml https://www.bbc.co.uk/bristol/content/madeinbristol/2004/02/... If the current is indeed enough to cause the tube to glow, touching the air-end of the tube with your finger will increase the coupling with the overhead lines (you're salt water - good conductor) and the brightness will increase. Personally, I don't like to walk under HV power lines. I know it's safe. And yet, so very unsettling to think of the sea of power being waded through.