"The simplest and perhaps earliest consisted of an earthen vessel with a small hole in the bottom. This was filled wit…"

"... Early clocks were inaccurate by as much as half an hour a day, and had to be reset frequently with the aid of a ;…"

"The invention of the mechanical clock, and the significant perceptual shift that attended it, provides rich and under…"

"By a clock we understand anything characterized by a phenomenon passing periodically through identical phases so that…"

"… We are accustomed to regard as real those sense perceptions which are common to different individuals, and which th…"

"The 1967 General Conference on Weights and Measures defined the of time, the second, based on an atomic transition—sp…"

"The clock, not the steam-engine, is the key-machine of the modern industrial age. For every phase of its development …"

"Carbonization drives off moisture... with... low molecular weight organic compounds... from extractives and... pyroly…"

"has not been generally used as a feedstock in simple thermal cracking... because the decomposition temperature is too…"

"[A]n overall model for the simulation of pyrolysis reactors should... include the heat, momentum, s differential equa…"