The Science Behind Cold Packs - Part 1: What the heck is the Latent Heat of Fusion?
![The Science Behind Cold Packs - Part 1: What the heck is the Latent Heat of Fusion?](http://minusworks.com/cdn/shop/articles/eric-zhu-i5fSP7wA4DI-unsplash_700x467.jpg?v=1617649462)
Even though we have continued to add energy to the substance, temperature is not increasing. Interesting! We add heat, but no temperature increase! What’s going on here?