Physicists can calculate the momentum of a particle — a clue to its identity — from the curvature of its path: particles with high momentum travel in almost straight lines, whereas those with very low momentum move forward in tight spirals inside the detector. (home.cern)
Thin, 13mm - 19 mm wands are good for short hair, or to make tight spirals on medium hair. (hairsaurus.com)
Holding 1 end in place, wind remaining rope around end to form fairly tight spiral that is slightly higher in centre. (styleathome.com)