Cutting onions all wrong

Cutting onions all wrong

Would you like to know how to reduce the tears while cutting an onion? New research reveals that chopping an onion is actually a high-speed fluid dynamics event -- and your dull knife is likely to blame. CBC’s Johanna Wagstaffe looks into how scientists, using high-speed particle tracking, confirmed just how impressive the spray from an onion is, and the way the layers react to a blade can essentially launch a sulphur-rich mist directly at your …