{"type":"rich","version":"1.0","title":"Newton's law of cooling","html":"<span class=\"wb-embed wb-embed-math\" data-latex=\"\\frac{dT}{dt}=-k\\bigl(T-T_{a}\\bigr)\">\\frac{dT}{dt}=-k\\bigl(T-T_{a}\\bigr)</span>","width":640,"height":320}