Tuesday, 13 May 2014

Color-Changing Markers Let You Know When a Hot Drink Has Safely Cooled



Color-Changing Markers Let You Know When a Hot Drink Has Safely Cooled

The markers used by baristas at coffee shops to label cups might soon be useful for more than just identifying your drink. Inspired by the experience of burning your tongue on overly hot coffee, theInk N Drink markers contain heat-sensitive ink that lets you know which drink is yours, and if it's safe to sip yet.
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