Joe, as a teenager, I and three guys took 8 new 4ft. tubes of lighting out to a area below the biggest power lines in Richmond, VA.
We performed a wild dance where all 8 tubes, about 50 yards from the lowest power line, lit up and flooded that field with light. They stayed lit while we moved laterally from the lines about a good 10-20 yards.
I imagine this might be harder today with the change from gas/tungsten to LED.