Slow Motion Barking Dog Offers Some Surprises

The barking dog reaction is a classic chemistry demonstration involving fire and a loud ‘woof’. The reaction seems to proceed down a long a tube from end to end, but if you view the reaction in slow motion, the wave front moves unevenly down the tube. You may have seen the barking dog a hundred times, but I bet you’ve never seen it like this!

Slow Motion Barking Dog Offers Some Surprises
Last modified: June 19th, 2013 by Anne Helmenstine