Precursors of the modern chemical industry began to emerge in Northern Europe in the middle of the eighteenth century. The Industrial Revolution boosted activities such as soap-making, glassmaking and textiles production, which required increasing quantities of chemical products. The Lead Chamber process for the manufacture of sulphuric acid, required for the production of dye, was developed in the 1740s by John Roebuck then based in Birmingham. Production of this key commodity rose steadily. By the 1820s, British annual production had reached 10 000 tons of 100% acid. By 1900, Britain was producing one quarter of the world's output with an annual production approaching one million tons. Demand for alkalis for glassmaking and soap-making, for textile dyes and for bleach was also growing rapidly in the second half of the eighteenth century, and it became clear that existing sources of these materials would not be sufficient. In response to a prize established by the Academie des Sciences, Nicholas Leblanc had devised by 1791 a method for converting common salt into soda ash, which was to become the central operation of the world alkali industry for about one hundred years.

This is the story of a seductive idea. Over the past century, the potential of new technology to solve social dilemmas has captivated modern culture. From apps that encourage physical activity to airport scanners meant to prevent terrorism, the concept that clever innovation can improve society is irresistible, but faith in such technological fixes is seldom questioned. Where did this idea come from, what makes it so appealing, and how does it endanger our future? Techno-Fixers traces the source of modern confidence in technology to engineering hubris, radical utopian movements, science fiction fanzines, policy-makers' soundbites, corporate marketing, and optimistic consumer culture from the turn of the twentieth century until today. Sean Johnston demonstrates that, through the promotion of prominent government scientists, technocrats, entrepreneurs, and popular media, modern invention became the favourite tool for addressing human problems and society's ills. Nonetheless, when it comes to assessing the success of cigarette filters as the solution to safe smoking, or DDT as the answer for agricultural productivity, the evidence is sobering. Cautioning that the rhetoric of technological fixes seldom matches reality, Johnston examines how employing innovation to bypass traditional methods can foster as many problems as it solves. A critical examination of modern faith in technology, Techno-Fixers evaluates past mistakes, present implications, and future opportunities for innovating societies.

From GMOs to WMD, science is controversial and unavoidable. This book charts its progress since prehistory and reveals its role in shaping our future. Drawing on intellectual history, philosophy, and social studies, Johnston offers a unique appraisal of both the history of science and the nature of the evolving discipline. Science has become a driving force of the modern world. Based on its changeable past, where might it take us in the twenty-first century?

2003 Paul Bunge Prize of the Hans R. Jenemann Foundation for the History of Scientific Instruments
Judging the brightness and color of light has long been contentious. Alternately described as impossible and routine, it was beset by problems both technical and social. How trustworthy could such measurements be? Was the best standard of intensity a gas lamp, an incandescent bulb, or a glowing pool of molten metal? And how much did the answers depend on the background of the specialist?
A History of Light and Colour Measurement: Science in the Shadows is a history of the hidden workings of physical science-a technical endeavor embedded in a social context. It argues that this "undisciplined" subject, straddling academia, commerce, and regulation, may be typical not only of 20th century science, but of its future.
Attracting scientists, engineers, industrialists, and artists, the developing subject produced a new breed of practitioners having mixed provenance. The new measurers of light had to decide the shape not only of their specialism but of their careers: were they to be a part of physics, engineering, or psychology? The physical scientists who dominated the subject into the early 20th century made their central aim the replacement of the problematic human eye with physical detectors of light. For psychologists between the wars, though, describing the complexity of color was more important than quantifying a handful of its dimensions. And after WWII, military designers shaped the subject of radiometry and subsumed photometry and colorimetry within it. Never attaining a professional cachet, these various specialists moved fluidly between science and technology; through government, industry, and administration.