A puck that changes colour? Coming to an NHL Winter Classic near you
The NHL has announced that the pucks at the 2019 Winter Classic will have thermochromic colour-changing coatings. The coating on the puck will change from purple to clear when the puck's temperature is above zero.
from CBC | NHL News https://www.cbc.ca/sports/hockey/nhl/new-puck-technology-winter-classic-1.4940777?cmp=rss
via CBC
A puck that changes colour? Coming to an NHL Winter Classic near you
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