How Fast Is Popcorn Kernel Pop?

A popcorn kernel flies outward at about 1 m/s as it explodes. The pop happens in 0.001 seconds at 180°C — internal water flashes to steam, the hull cracks, and the starch puffs out faster than you can blink.

A popcorn kernel explodes at 180°C with internal pressure of about 10 atmospheres.

• Same speed as a snowflake falling
• Explodes in 1 millisecond at 180°C