Many spray can lids have a tiny hole at the top. Check out this HowStuffWorks podcast to learn more about spray cans, shipping and air pressure.
 Learn more about your ad-choices at https://www.iheartpodcastnetwork.com

Many spray can lids have a tiny hole at the top. Check out this HowStuffWorks podcast to learn more about spray cans, shipping and air pressure. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com

Why is there a small hole on the top of spray can lids?

Whether the topic is popcorn or particle physics, you can count on BrainStuff to explore -- and explain -- the everyday science in the world around us.

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Why is there a small hole on the top of spray can lids?

Why is there a small hole on the top of spray can lids?