A long, interwoven lattice of popsicle sticks can release its stored energy in a visually impressive, propagating wave—a raised section of the structure akin to an angry cobra that spits out sticks as it moves. Researchers have now theoretically modeled this phenomenon and used high-speed video of these “cobra waves” to verify the model’s predictions for the wave’s shape and speed. They have also found that there is a narrow range of popsicle-stick lengths that can produce a cobra wave. The results may prove useful for understanding microtubules, which are biopolymers that rapidly unravel when their end cap is released.
Sign up with Google
