The missing piece of the onion's chemical sting is physics
We have long understood the biology and chemistry behind why slicing an onion causes tears. However, a new look at the process reveals that physics plays a crucial role in the puzzle.
While the biological and chemical mechanisms of onion-induced tearing are well-documented, researchers have identified a missing element in the equation: physics. By utilizing an onion guillotine, scientists have been able to further investigate the mechanics of how these irritants are released and interact with our eyes.
Source: How Onions ACTUALLY Make You Cry (And How to Stop Them)
