1. The problem statement, all variables and given/known data Usually when temperatures are written as "T", they are given in kelvins and when written in "t" they are given in celsius. The equation dL = aLdT used T for temperature yet, in the experiment temperature is measured as celsius. Is there any difference? Why? 2. Relevant equations dL = aLdT where a is coefficient of Linear Expression 3. The attempt at a solution This is just an experiment preparatory question. I was not sure about this but my answer would be that there is no large difference as we all know the equation: Kelvins = Celsius + 273 Although since there is always a reading error with even temperature then the conversion would also accompany a calculated error. Although I am unsure. Could someone direct me to the right direction or just confirm that I am correct?