Contents

Cover

Title Page

Copyright

List of Illustrations

Acknowledgements

Introduction

Book One: OUT OF THE DARK AGES

1. Renaissance Men

Emerging from the darkThe elegance of CopernicusThe Earth moves!The orbits of the planetsLeonard Digges and the telescopeThomas Digges and the infinite UniverseBruno: a martyr for science?Copernican model banned by Catholic ChurchVesalius: surgeon, dissector and grave-robberFallopio and FabriciusWilliam Harvey and the circulation of the blood

2. The Last Mystics

The movement of the planetsTycho BraheMeasuring star positionsTycho’s supernovaTycho observes cometHis model of the UniverseJohannes Kepler: Tycho’s assistant and inheritorKepler’s geometrical model of the UniverseNew thoughts on the motion of planets: Kepler’s first and second lawsKepler’s third lawPublication of the Rudolphine star tablesKepler’s death

3. The First Scientists

William Gilbert and magnetismGalileo on the pendulum, gravity and accelerationHis invention of the ‘compass’His supernova studiesLippershey’s reinvention of the telescopeGalileo’s developments thereonCopernican ideas of Galileo judged hereticalGalileo publishes Dialogue on the Two Chief World SystemsThreatened with torture, he recantsGalileo publishes Two New SciencesHis death

Book Two: THE FOUNDING FATHERS

4. Science Finds its Feet

René Descartes and Cartesian co-ordinatesHis greatest worksPierre Gassendi: atoms and moleculesDescartes’s rejection of the concept of a vacuumChristiaan Huygens: his work on optics and the wave theory of lightRobert Boyle: his study of gas pressureBoyle’s scientific approach to alchemyMarcello Malpighi and the circulation of the bloodGiovanni Borelli and Edward Tyson: the increasing perception of animal (and man) as machine.

5. The ‘Newtonian Revolution’

Robert Hooke: the study of microscopy and the publication of MicrographiaHooke’s study of the wave theory of lightHooke’s law of elasticityJohn Flamsteed and Edmond Halley: cataloguing stars by telescopeNewton’s early lifeThe development of calculusThe wrangling of Hooke and NewtonNewton’s Principia Mathematica: the inverse square law and the three laws of motionNewton’s later lifeHooke’s death and the publication of Newton’s Opticks

6. Expanding Horizons

Edmond HalleyTransits of VenusThe effort to calculate the size of an atomHalley travels to sea to study terrestrial magnetismPredicts return of cometProves that stars move independentlyDeath of HalleyJohn Ray and Francis Willughby: the first-hand study of flora and faunaCarl Linnaeus and the naming of speciesThe Comte de Buffon: Histoire Naturelle and thoughts on the age of the EarthFurther thoughts on the age of the Earth: Jean Fourier and Fourier analysisGeorges Couvier: Lectures in Comparative Anatomy; speculations on extinctionJean-Baptiste Lamarck: thoughts on evolution

Book Three: THE ENLIGHTENMENT

7. Enlightened Science I: Chemistry catches up

The EnlightenmentJoseph Black and the discovery of carbon dioxideBlack on temperatureThe steam engine: Thomas Newcomen, James Watt and the Industrial RevolutionExperiments in electricity: Joseph PriestleyPriestley’s experiments with gasesThe discovery of oxygenThe chemical studies of Henry Cavendish: publication in the Philosophical TransactionsWater is not an elementThe Cavendish experiment: weighing the EarthAntoine-Laurent Lavoisier: study of air; study of the system of respirationThe first table of elements; Lavoisier renames elements; he publishes Elements of ChemistryLavoisier’s execution

8. Enlightened Science II: Progress on all fronts

The study of electricity: Stephen Gray, Charles Du Fay, Benjamin Franklin and Charles CoulombLuigi Galvani, Alessandro Volta and the invention of the electric batteryPierre-Louis de Maupertuis: the principle of least actionLeonhard Euler: mathematical description of the refraction of lightThomas Wright: speculations on the Milky WayThe discoveries of William and Caroline HerschelJohn MichellPierre Simon Laplace, ‘The French Newton’: his ExpositionBenjamin Thompson (Count Rumford): his lifeThompson’s thoughts on convectionHis thoughts on heat and motionJames Hutton: the uniformitarian theory of geology

Book Four: THE BIG PICTURE

9. The ‘Darwinian Revolution’

Charles Lyell: His lifeHis travels in Europe and study of geologyHe publishes the Principles of GeologyLyell’s thoughts on speciesTheories of evolution: Erasmus Darwin and ZoonomiaJean-Baptiste Lamarck: the Lamarckian theory of evolutionCharles Darwin: his lifeThe voyage of the BeagleDarwin develops his theory of evolution by natural selectionAlfred Russel WallaceThe publication of Darwin’s Origin of Species

10. Atoms and Molecules

Humphry Davy’s work on gases; electrochemical researchJohn Dalton’s atomic model; first talk of atomic weightsJöns Berzelius and the study of elementsAvogadro’s numberWilliam Prout’s hypothesis on atomic weightsFriedrich Wöhler: studies in organic and inorganic substancesValencyStanislao Cannizzaro: the distinction between atoms and moleculesThe development of the periodic table, by Mendeleyev and othersThe science of thermodynamicsJames Joule on thermodynamicsWilliam Thomson (Lord Kelvin) and the laws of thermodynamicsJames Clerk Maxwell and Ludwig Boltzmann: kinetic theory and the mean free path of moleculesAlbert Einstein: Avogadro’s number, Brownian motion and why the sky is blue

11. Let There be Light

The wave model of light revivedThomas Young: his double-slit experimentFraunhofer linesThe study of spectroscopy and the spectra of starsMichael Faraday: his studies in electromagnetismThe invention of the electric motor and the dynamoFaraday on the lines of forceMeasuring the speed of lightJames Clerk Maxwell’s complete theory of electromagnetismLight is a form of electromagnetic disturbanceAlbert Michelson and Edward Morley: the Michelson–Morley experiment on lightAlbert Einstein: special theory of relativityMinkowski: the geometrical union of space and time in accordance with this theory

12. The Last Hurrah! of Classical Science

Contractionism: our wrinkling planet?Early hypotheses on continental driftAlfred Wegener: the father of the theory of continental driftThe evidence for PangeaThe radioactive technique for measuring the age of rocksHolmes’s account of continental driftGeomagnetic reversals and the molten core of the EarthThe model of ‘sea-floor spreading’Further developments on continental driftThe ‘Bullard fit’ of the continentsPlate tectonicsThe story of Ice Ages: Jean de CharpentierLouis Agassiz and the glacial modelThe astronomical theory of Ice AgesThe elliptical orbit modelJames CrollThe Milankovitch modelModern ideas about Ice AgesThe impact on evolution

Book Five: MODERN TIMES

13. Inner Space

Invention of the vacuum tube‘Cathode rays’ and ‘canal rays’William Crookes: the Crookes tube and the corpuscular interpretation of cathode raysCathode rays are shown to move far slower than lightThe discovery of the electronWilhelm Röntgen & the discovery of X-raysRadioactivity; Becquerel and the CuriesDiscovery of alpha, beta and gamma radiationRutherford’s model of the atomRadioactive decayThe existence of isotopesDiscovery of the neutronMax Planck and Planck’s constant, black-body radiation and the existence of energy quantaAlbert Einstein and light quantaNiels BohrThe first quantum model of the atomLouis de BroglieErwin Schrödinger’s wave equation for electronsThe particle-based approach to the quantum world of electronsHeisenberg’s uncertainty principle: wave–particle dualityDirac’s equation of the electronThe existence of antimatterThe strong nuclear forceThe weak nuclear force; neutrinosQuantum electrodynamicsThe future? Quarks and string

14. The Realm of Life

The most complex things in the UniverseCharles Darwin and nineteenth-century theories of evolutionThe role of cells in lifeThe division of cellsThe discovery of chromosomes and their role in heredityIntracellular pangenesisGregor Mendel: father of geneticsThe Mendelian laws of inheritanceThe study of chromosomesNucleic acidWorking towards DNA and RNAThe tetranucleotide hypothesisThe Chargaff rulesThe chemistry of lifeCovalent bond model and carbon chemistryThe ionic bondBragg’s lawChemistry as a branch of physicsLinus PaulingThe nature of the hydrogen bondStudies of fibrous proteinsThe alpha-helix structureFrancis Crick and James Watson: the model of the DNA double helixThe genetic codeThe genetic age of humankindHumankind is nothing special

15. Outer Space

Measuring the distances of starsStellar parallax determinationsSpectroscopy and the stuff of starsThe Hertzsprung–Russell diagramThe colour–magnitude relationship and the distances to starsThe Cepheid distance scaleCepheid stars and the distances to other galaxiesGeneral theory of relativity outlinedThe expanding UniverseThe steady state model of the UniverseThe nature of the Big BangPredicting background radiationMeasuring background radiationModern measurements: the COBE satelliteHow the stars shine: the nuclear fusion processThe concept of ‘resonances’CHON and humankind’s place in the UniverseInto the unknown

Coda: The Pleasure of Finding Things Out

Bibliography

About the Author