Based on a course of lectures delivered by the author at Columbia University, the text is elementary in treatment and remarkable for its clarity and organization. Although it is assumed that the reader is familiar with the fundamental facts of thermometry and calorimetry, no advanced mathematics beyond calculus is assumed.Partial contents: thermodynamic systems, the first law of thermodynamics (application, adiabatic transformations), the second law of thermodynamics (Carnot cycle, absolute thermodynamic temperature, thermal engines), the entropy (properties of cycles, entropy of a system whose states can be represented on a (V, p) diagram, Clapeyron and Van der Waals equations), thermodynamic potentials (free energy, thermodynamic potential at constant pressure, the phase rule, thermodynamics of the reversible electric cell), gaseous reactions (chemical equilibria in gases, Van't Hoff reaction box, another proof of the equation of gaseous equilibria, principle of Le Chatelier), the thermodynamics of dilute solutions (osmotic pressure, chemical equilibria in solutions, the distribution of a solute between 2 phases vapor pressure, boiling and freezing points), the entropy constant (Nernst's theorem, thermal ionization of a gas, thermionic effect, etc.).

    The discovery of radium in the late 19th century prompted a flurry of experiments to scope the limits of its potential applications. Half Lives tells the fascinating, curious, sometimes macabre story of the element through its ascendance as a desirable item – a present for a queen, a prize in a treasure hunt, a glow-in-the-dark dance costume, a boon to the housewife, and an ingredient in a startling host of consumer products – to its role as a cure-all in everyday 20th-century life.Finally, it details the gradual downfall and discredit of the radium industry through the eyes of the people who bought, sold and eventually came to fear it.Half Lives is an enjoyable journey into the odd areas where science and consumerism meet, telling the tale of the entrepreneurs and consumers in radium’s history who have until now been considered quacks, or fools, or both.

    Meridian exercise is a technique developed and perfected over the course of thousands of years in the Asian healing arts traditions.