Why Philosophy of Science Matters to Science Education

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Epistemology is the branch of philosophy that studies concepts such as knowledge, evidence, induction, prediction, rationality, justified belief, and probability. Epistemologists study these topics both in the context of scientific practice and in the context of the everyday problems that nonscientists face.

The etymology of “epistemology” often leads philosophers to define epistemology as the theory of knowledge, but the practice of epistemologists shows that they are interested in a wider range of concepts and problems. For example, if you buy a ticket in a lottery, it seems false to say that you know that your ticket will lose. But it may be true that you are justified in believing that it will lose; after all, the probability of its losing is very high. There is more to epistemology than the topic of knowledge.

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anengineersaspect"THE TRUE WIRELESS" BY NIKOLA TESLA


Today’s Tesla celebration is an article written by Nikola Tesla, himself…”The True Wireless.” Clearly written with TWENTY hand-drawn figures, Tesla “schools” us on the principles of wireless transmission and reception.

This article was featured in the May, 1919, edition of The Electrical Experimenter and thus, Hugo Gernsback, editor of the magazine, friend and fan of Tesla, penned the introduction.

IN this remarkable and complete story of his discovery of the “True Wireless” and the principles upon which transmission and reception, even in the present day systems, are based. Dr. Nikola Tesla shows us that he is indeed the “Father of the Wireless.” To him the Hertz wave theory is a delusion; it looks sound from certain angles, but the facts tend to prove that it is hollow and empty. He convinces us that the real Hertz waves are blotted out after they have traveled but a short distance from the sender. It follows, therefore, that the measured antenna current is no indication of the effect, because only a small part of it is effective at a distance. The limited activity of pure Hertz wave transmission and reception is here clearly explained, besides showing definitely that in spite of themselves, the radio engineers of today are employing the original Tesla tuned oscillatory system. He shows by examples with different forms of aerials that the signals picked up by the instruments must actually be induced by earth currents—not etheric space waves. Tesla also disproves the “Heaviside layer” theory from his personal observations and tests.
                                            HUGO GERNSBACK, EDITOR.

READ THE FULL ARTICLE HERE-AN ENGINEER’S ASPECT

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