History of electromagnetism Discovery of effect of electric force[ edit ] The ancient Greeks noticed that amber attracted small objects when rubbed with fur. From this, du Fay theorized that electricity consists of two electrical fluidsvitreous and resinous, that are separated by friction, and that neutralize each other when combined. He gave them the modern charge nomenclature of positive and negative respectively. After studying the phenomenon of electrolysis inIrish physicist George Johnstone Stoney suggested that there existed a "single definite quantity of electricity", the charge of a monovalent ion.
Dubold shut off the rockets, while Mansell leaped to the telescope. Dubold narrowed the detector beam to a tiny spear of electron stream, and turned to the screen. The feed-back of that narrowed beam would detect a tiny mass a thousand miles out in space through the disturbance of its flowing electrons and locate it in space as accurately as if sighted by a gun.
At the intersection of the cross-bar lines a tiny shadow showed like a blot of ink in its intensity. Yet Mansell could see nothing.
Mansell changed the course of the ship slightly and the clangor ceased. Dubold shifted the needle beam a bit and located the mass again.
A lightning calculation by Mansell told them that the mass was at least fifteen hundred miles ahead. Its detection informed them that the mass was large enough to be seen with the naked eye. Mansell and Dubold looked at each other doubtfully, but Shafton was not watching them.
Instead, he had his eyes glued to the gravitator as if he could not believe what he saw. However, we are out of its path A flicker of alarm crossed his sharp-cut features as his attention riveted upon the young spaceman's face.
For Shafton's eyes were staring aghast into the gravitator's dial. There must be something wrong.
So sensitive were the spacemen's sensations to gravitational pulls out there in almost weightless space, a slight but decided tug toward the prow could be felt.
Again the commander scanned the surrounding space. Thrilling Wonder Stories April The mass ahead tripped the gravity detectors. They had to drop below the speed of light, so that their search beams could guard them from collision.
And that strange cloud grew.
There was nothing we could see with the tele-periscopes, but the gravity detectors betrayed an invisible object of fifty thousand tons, approaching behind us—as if it had followed us from Neptune. The deflector fields wouldn't swing it an inch.
Larry Cho is at a research facility on Pluto, where they have a gravitational generator in the form of a giant ring around the moon Charon. Aliens are invading the solar system using advanced gravidic technology.
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Larry has to reconfigure the generator into a gravity telescope. The Ring was not merely an accelerator. In theory, it could be configured as a gravity-imaging system, a gravity telescope of enormous sensitivity.
Such a scope could do more than collect gravity waves. It could form images out of them. No one had ever tried it.S. salivarius, the principal bacterium colonizing the oral cavity, shows promise as a probiotic for control of a variety of infections, from halitosis and dental caries to otitis media and candida.
Electron-beam lithography (often abbreviated as e-beam lithography) is the practice of scanning a focused beam of electrons to draw custom shapes on a surface covered with an electron-sensitive film called a resist (exposing).
This presentation, Ultra Microscopes and Cure Rays focuses on the work of Dr. Royal Raymond Rife. But, it also includes the work of four other men, and discusses other necessary and complementary "Cure Methods" that are required for a truly holistic therapy program. Direct writing utilizing a focused electron beam constitutes an interesting alternative to resist-based techniques, as it allows for precise and flexible growth onto any conductive substrate in a single-step process.
Ever loved a book or story, and been unable to find another quite like it? Maybe we at Magic Dragon Multimedia can help to steer you in the right direction. The concept of bone regeneration is to use a scaffold that can act as a three-dimensional (3-D) temporary template to guide bone repair.
Ideally the scaffold will stimulate .