Why Does the Coffee Cup Lid Have a Tiny Second Hole? Know the Science Behind It
What is the purpose of the small second hole in the coffee cup lid? Learn About the Science Underlying It. (Pics: Freepik)
Every one of us love drinking coffee but have you observed that the coffee cup lid has a tiny second hole? There is a science behind it.
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By allowing air in as you drink, the little second hole on the cover of a coffee cup, sometimes referred to as a pressure equalization port, prevents a vacuum and guarantees a smooth, splash free flow.
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Additionally, it enables steam to exit, which helps to maintain a tight cover and prevents pressure from building up. The explanation for this is straightforward. The creation and delivery of food is also backed by science.
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Your mouth forms a seal when you drink from the main hole. A vacuum will develop if the liquid leaves and there is no air to take its place, which will cause the coffee to glug or gush out unexpectedly.
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Steam is produced by hot coffee. This steam is released through the tiny, typically elevated hole, which keeps the cover from blowing off due to increasing pressure. (Disclaimer: Given the input is on an information basis, please seek professional advice.)
