LEEUWENHOEK DISCOVERS BACTERIA The seventeenth century was not to close, however, without another discovery in science, which, when applied to the causation of disease almost two centuries later, revolutionized therapeutics more Citeste tot ...
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INSTRUMENTS OF PRECISION IN THE AGE OF NEWTON
INSTRUMENTS OF PRECISION IN THE AGE OF NEWTON During the Newtonian epoch there were numerous important inventions of scientific instruments, as well as many improvements made upon the older ones. Some of these discoveries have be Citeste tot ...
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FRANKLIN INVENTS THE LIGHTNING-ROD
FRANKLIN INVENTS THE LIGHTNING-ROD Even before Franklin proved conclusively the nature of lightning, his experiments in drawing off the electric charge with points led to some practical suggestions which resulted in the invention Citeste tot ...
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PROGRESS IN ELECTRICITY FROM GILBERT AND VON GUERICKE TO
PROGRESS IN ELECTRICITY FROM GILBERT AND VON GUERICKE TO FRANKLIN We have seen how Gilbert, by his experiments with magnets, gave an impetus to the study of magnetism and electricity. Gilbert himself demonstrated some facts and ad Citeste tot ...
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DUFAY DISCOVERS VITREOUS AND RESINOUS ELECTRICITY
DUFAY DISCOVERS VITREOUS AND RESINOUS ELECTRICITY It has been shown in an earlier chapter how Von Guericke discovered that light substances like feathers, after being attracted to the sulphur-ball electric-machine, were repelled by Citeste tot ...
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THE BEGINNINGS OF MODERN SCIENCE
THE BEGINNINGS OF MODERN SCIENCE The studies of the present book cover the progress of science from the close of the Roman period in the fifth century A.D. to about the middle of the eighteenth century. In tracing the course of e Citeste tot ...
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PHILOSOPHER-SCIENTISTS AND NEW INSTITUTIONS OF LEARNING
PHILOSOPHER-SCIENTISTS AND NEW INSTITUTIONS OF LEARNING We saw that in the old Greek days there was no sharp line of demarcation between the field of the philosopher and that of the scientist. In the Hellenistic epoch, however, knowl Citeste tot ...
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CHRISTIAN HUYGENS
CHRISTIAN HUYGENS If for nothing else, the world is indebted to the man who invented the pendulum clock, Christian Huygens (1629-1695), of the Hague, inventor, mathematician, mechanician, astronomer, and physicist. Huygens was th Citeste tot ...
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NEWTON AND THE LAW OF GRAVITATION
NEWTON AND THE LAW OF GRAVITATION We come now to the story of what is by common consent the greatest of scientific achievements. The law of universal gravitation is the most far-reaching principle as yet discovered. It has applica Citeste tot ...
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STUDIES OF LIGHT, HEAT, AND ATMOSPHERIC PRESSURE
STUDIES OF LIGHT, HEAT, AND ATMOSPHERIC PRESSURE We have seen that Gilbert was by no means lacking in versatility, yet the investigations upon which his fame is founded were all pursued along one line, so that the father of magnetism Citeste tot ...
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GALILEO AND THE EQUILIBRIUM OF FLUIDS
GALILEO AND THE EQUILIBRIUM OF FLUIDS Experiments of an allied character, having to do with the equilibrium of fluids, exercised the ingenuity of Galileo. Some of his most interesting experiments have to do with the subject of fl Citeste tot ...
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FIFTEENTH-CENTURY MEDICINE
FIFTEENTH-CENTURY MEDICINE The thirteenth and fourteenth centuries had seen some slight advancement in the science of medicine; at least, certain surgeons and physicians, if not the generality, had made advances; but it was not u Citeste tot ...
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ROBERT BOYLE (1627-1691)
ROBERT BOYLE (1627-1691) Some of Robert Boyle s views as to the possible structure of atmospheric air will be considered a little farther on in this chapter, but for the moment we will take up the consideration of some of his exp Citeste tot ...
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FRANKLIN PROVES THAT LIGHTNING IS ELECTRICITY
FRANKLIN PROVES THAT LIGHTNING IS ELECTRICITY Europe, hitherto somewhat sceptical of Franklin s views, was by this time convinced of the identity of lightning and electricity. It was now Franklin s turn to be sceptical. To him the Citeste tot ...
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ROGER BACON
ROGER BACON Bacon was born in 1214 and died in 1292. By some it is held that he was not appreciated in his own time because he was really a modern scientist living in an age two centuries before modern science or methods of moder Citeste tot ...
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EXPERIMENTS OF CISTERNAY DUFAY
EXPERIMENTS OF CISTERNAY DUFAY So far England had produced the two foremost workers in electricity. It was now France s turn to take a hand, and, through the efforts of Charles Francois de Cisternay Dufay, to advance the science Citeste tot ...
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THE NATURE OF COLOR
THE NATURE OF COLOR Having thus proved the composition of light, Newton took up an exhaustive discussion as to colors, which cannot be entered into at length here. Some of his remarks on the subject of compound colors, however, Citeste tot ...
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ASTROLOGY
ASTROLOGY In a general way modern astronomy may be considered as the outgrowth of astrology, just as modern chemistry is the result of alchemy. It is quite possible, however, that astronomy is the older of the two; but astrology m Citeste tot ...
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THE EXPERIMENTS OF STEPHEN GRAY
THE EXPERIMENTS OF STEPHEN GRAY In 1729 Stephen Gray (died in 1736), an eccentric and irascible old pensioner of the Charter House in London, undertook some investigations along lines similar to those of Hauksbee. While experimen Citeste tot ...
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NATURAL HISTORY TO THE TIME OF LINNAeUS
NATURAL HISTORY TO THE TIME OF LINNAeUS Modern systematic botany and zoology are usually held to have their beginnings with Linnaeus. But there were certain precursors of the famous Swedish naturalist, some of them antedating him by Citeste tot ...
