Talk:Physics with Calculus/Mechanics/Energy and Conservation of Energy

What is the source of 1st law of thermodynamics ? When was the conservation of energy principle first espoused ? What is the motivation for this ?

Physics symbols
Could someone change this page an possibly others to make: - kinetic energy represented by K, and not KE - potential energy represented by U, and not PE

Potential energy can have a subscript to indicate the type, for example gravitational potential energy $$U_g$$

Update: Ok, I just changed it myself. Looks much better now, IMO.

Jeff.