Florida Technology Institute’s Joseph Dwyer has coined the phrase “dark lightning” to describe sudden pulses of invisible lightning. We called the invisible radiation Blacktricity long before “scientists” “discovered” it. Dark Lightning comes from Blacktricity
Read more about Dark lightning here:
http://www.washingtonpost.com/national/health-science/thunderstorms-contain-dark-lightning-invisible-pulses-of-powerful-radiation/2013/04/08/1c796ebc-8a76-11e2-a051-6810d606108d_story.html