Hear Hot v. Cold Water? Wanna Share the Leftovers?

Curated by CLAI

HEARING HOT V. COLD: Can you hear the difference between hot and cold water? Most people can.

  • Cold water is more viscous than hot water, because the molecules are wiggling less rapidly, so they are effectively stickier. How viscous a liquid is affects how it pours, and therefore how it sounds.
  • Bubbliness is also a factor. There tends to be more bubbling in a liquid that’s hot. As you have more bubbling, you tend to get higher frequency sounds from it.
Hearing Temperature Differences

Hearing Temperature Differences (NPR)

LEFTOVERS? You can share it. With an app.

  • HUNGARY: Picniq  allows users share what they are cooking and eating — and for users to share in those meals.
  • GREECE: Cookisto began as a way to connect home cooks with busy people looking for a hot meal.
  • GERMANY: Foodsharing.de allows its 43,000 users to share surplus food in Germany, Austria and Switzerland.
  • ITALY: Ratatouille allows users to post their extra food in their “fridge” in the app for others to claim and arrange drop-off points.
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