In parallel to the development of the bus was the invention of the electric trolleybus, typically fed through trolley poles by overhead wires, which actually preceded, and in many urban areas outnumbered, the conventional engine powered bus.

This relationship between magnetic fields and currents is extremely important, for it led to Michael Faraday's invention of the electric motor in 1821.

The impact of inventions and technology on society is a recurring, if not central theme in Niven's work: for example, addiction to electric brain stimulation resulting in " wireheads ", or the secondary and tertiary effects of an invention such as teleportation on social behavior, problems, and mores.

The invention of the limelight in the 1820s made it even brighter, and following that the inventions of the electric arc lamp in the 1860s, and then incandescent electric lamps, or the burning of an ether / oxygen mixture, all further improved the projected image of the magic lantern.

Héroult's second most important invention is the electric arc furnace for steel in 1900.

Mahen Theatre in Brno ( in what is now the Czech Republic ) was the first public building in the world to use Edison's electric lamps, with the installation supervised by Edison's assistant in the invention of the lamp, Francis Jehl.

Edison patented a system for electricity distribution in 1880, which was essential to capitalize on the invention of the electric lamp.

Credit for the invention of the electric telephone is frequently disputed, and new controversies over the issue have arisen from time to time.

They also exhibited the invention in Turin, Italy in 1884, where it was adopted for an electric lighting system.

This electron flew in the face of classical electrodynamics, which had successfully treated electricity as a fluid for many years ( leading to the invention of batteries, electric motors, dynamos, and arc lamps ).

The basic invention involves passing an electric current through a bath of alumina dissolved in cryolite, which results in a puddle of aluminum forming in the bottom of the retort.

Before the invention of electric lighting, candles and oil lamps were commonly used for illumination.

His invention of the voltaic cell leads to the invention the electric battery.

* " Electronic Relay Circuit " ( The patent notes " My invention relates to electric circuits employing relays ...") filed May 28, 1947, issued January 31, 1961.

* " Memory Transformer " ( The patent notes that " My invention relates to electric relay circuits and more particularly to improved transformers for use therein.

Some of these innovations include the invention of monofilament nylon fishing lines, the fiberglass ( later graphite composite ) fishing rod, the electric trolling motor, the fish finder / depth locator, and new artificial lures and baits made of various plastics.

The invention of the transistor made possible cheaper electronic remotes that contained a piezoelectric crystal that was fed by an oscillating electric current at a frequency near or above the upper threshold of human hearing, though still audible to dogs.

He was to write on things like the Wright brothers and their first aeroplane, Thomas Edison and his electric light bulb invention, Alexander Graham Bell and the telephone, and Samuel F. B. Morse's invention of the telegraph.

The exhibition included exhibits of his inventions, and the city was lit with electric light, thanks to Swan's invention.

The common coupling of Swan's name with that of Edison in connection with the incandescent electric lamp has often led to the notion that Swan collaborated with Edison in this invention.

In 1860 Étienne Lenoir used an electric spark plug in his first internal combustion engine and is generally credited with the invention of the spark plug.

Prior to Rillieux's invention, two engineers developed a vacuum pan and electric coils to improve the process of making sugar, but this was unsuccessful due to the use of steam at wrong locations in the machine.

The invention of slap on electric bass guitar is generally credited to funk bassists Larry Graham and Louis Johnson.

The effect of the invention of valves for the brass was felt almost immediately: instrument-makers throughout Europe strove together to foster the use of these newly refined instruments and continuing their perfection ; and the orchestra was before long enriched by a new family of valved instruments, variously known as tubas, or euphoniums and bombardons, having a chromatic scale and a full sonorous tone of great beauty and immense volume, forming a magnificent bass.

He is credited with the invention of the slapping technique, which radically expanded the tonal palette of the bass, although he himself refers to the technique as " Thumpin ' and Pluckin '.

A chaconne (); () is a type of musical composition popular in the baroque era when it was much used as a vehicle for variation on a repeated short harmonic progression, often involving a fairly short repetitive bass-line ( ground bass ) which offered a compositional outline for variation, decoration, figuration and melodic invention.

He vigorously defended his " invention " and his patent, which included the elimination of bass and treble clefs and the simplification of time signatures.

We are desperately in the need of such invention, for man is still very much at the mercy of man.

`` The confusion is not my invention.

A broader concept of imitation is needed, one which acknowledges that true invention is important, that the artist's creativity in part transcends the non-artistic causal factors out of which it arises.

Accordingly, it is the aim of this essay to advance a new theory of imitation ( which I shall call mimesis in order to distinguish it from earlier theories of imitation ) and a new theory of invention ( which I shall call symbol for reasons to be stated hereafter ).

As long as perception is seen as composed only of isolated sense data, most of the quality and interconnectedness of existence loses its objectivity, becomes an invention of consciousness, and the result is a philosophical scepticism.

`` My personal view is that not one patented invention in ten is worth making '', he later told a Congressional committee.

In the context of patent law and specifically in prior art searches, searching through abstracts is a common way to find relevant prior art document to question to novelty or inventive step ( or non-obviousness in United States patent law ) of an invention.

It condemned him for his invention of dynamite and is said to have brought about his decision to leave a better legacy after his death.

Scholars are unsure how much of Aristophanes ' portrayal is fact and how much mere comic invention.

The concept and theory of Kolmogorov Complexity is based on a crucial theorem first discovered by Ray Solomonoff, who published it in 1960, describing it in " A Preliminary Report on a General Theory of Inductive Inference " as part of his invention of algorithmic probability.

There is no contemporary evidence that Alfred and Guthrum agreed upon a formal treaty at this time ; the so-called Treaty of Wedmore is an invention of modern historians.

His promotion of it was so extensive that he is often credited with its invention, even though a machine operating in the same principle was described in 1762 by Swedish professor Johan Wilcke.

Parkinson challenges the argument from moral objectivity by arguing that, for the argument to be successful, it must be shown that morality is objective and commanded by God, rather than just a human invention.

Perhaps Grothendieck's deepest single accomplishment is the invention of the étale and l-adic cohomology theories, which explain an observation of André Weil's that there is a deep connection between the topological characteristics of a variety and its diophantine ( number theoretic ) properties.

Its invention is credited to the Celts, the Romans were thought to have adopted their design.

Finally, in 1740 the French astronomer Jacques Cassini, who is traditionally credited with the invention of year zero, completed the transition in his Tables astronomiques, simply labeling this year 0, which he placed at the end of Julian years labeled avant Jesus-Christ ( before Jesus Christ or BC ), and immediately before Julian years labeled après Jesus-Christ ( after Jesus Christ or AD ).

It is unclear whether the word dates back to the 5th century and was used by the kings themselves, or whether it is a later, 9th-century, invention.

* A Sam Browne belt is a modern invention similar in function to the baldric.

There is no evidence for this and it is probably a post World War II invention.