Abstract
The physical reason for the small-scale tortuosity observed in sparks and lightning channels is unknown at present. In this paper, it is suggested that the small-scale tortuosity of the discharge channels is caused by the natural tendency for subsequent leader streamer bursts to avoid each other but at the same time to align as much as possible along the direction of the background electric field. This process will give rise to a discharge channel that re-orients in space during each streamer burst creating the small scale tortuosity.
Highlights
The tortuosity of spark and discharge channels has been observed since antiquity
One of the best recordings of the small scale tortuosity of the lightning channel with high resolution was obtained by Evans and Walker [4]
The optimal direction of the second streamer burst is obtained by selecting all possible orientations of the second streamer burst and calculating, in each case, the energy associated with the system
Summary
The tortuosity of spark and discharge channels has been observed since antiquity. The similarity of the tortuous nature of sparks and lightning channels is one reason that suggested to Benjamin Franklin that the basic physics underlying these two phenomena is the same. Since this strike took place on a tall tower, it is possible that the section of the lightning channel shown in the figure is created by the upward moving positive connecting leader. It is possible that the fine scale tortuosity associated with the discharge channels is different depending on whether the channel is created by a negative or a positive leader. We suggest that the fine scale tortuosity of the lightning channel sections and spark channels.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
