This valuable manuscript was copied Anno Hegirae 1100 (a.d. 1688).

Particulates in engine oil can abrade moving parts.

500 J introduced to a system caused the temperature of the system to increase by 2 K; thus, the heat capacity is 250 J/K. If the system consists of a single material with a mass of 500 g, the specific heat capacity of that material is 500 J/K/kg.

These uplands are still growing, and comparatively young, but their nature points to past sublineation of thick accumulations of sediment, from abundant sources, and therefore active volcanicity