Category: Science - Physics
Many persons who have devoted no time to the study of physics wonder what the force is that drives the street-car along—turning its wheels, while at the same time furnishing incandescent lamps (light) for the passengers. They have been told, of course, that the “power” used is...
Many persons who have devoted no time to the study of physics wonder what the force is that drives the street-car along—turning its wheels, while at the same time furnishing inc...
2. CHAPTER 2It was long ago observed that if glass is rubbed by silk, or a piece of sealing-wax or hard rubber by fur or wool, an effect occurs similar to that noted by Thales when amber is...
3. CHAPTER 3The Danish physicist, Hans Christian Örsted, professor of natural philosophy at the University of Copenhagen, showed us, more than a century ago, that a magnetic needle can be d...
4. CHAPTER 4The science of electricity is based upon observation of those phenomena of attraction and repulsion which are comprehended under the term _electrostatics_. Statical electricity,...
5. CHAPTER 5We have already shown how the magnetism of a magnet is converted into electricity, by means of rotating coils cutting the lines of magnetic force in the “field.” The energy used...
6. CHAPTER 6Heinrich Hertz demonstrated in 1887 that he could produce in the “ether”—or at least in space—what are now known as “wireless waves,” by allowing a charge of electricity to osci...
7. CHAPTER 7Accepting Faraday’s physical views as a point of departure, James Clerk Maxwell (1831-1879), Professor of Experimental Physics in the University of Cambridge, began (about 1860)...