Related Clues:

• Electric discharges
• Diameter halves
• Geometry calculations
• Rainbows, for example
• Parabolas
• Not the most direct routes from point to point
• Flight paths
• Jumps electrodes
• Javelin paths
• Curved lines
• Circle portions
• Armbones
• Spokes, e.g.
• Diameter fractions
• Circle sections