ECE 1304 Introduction to Electrical and Computer Engineering What is Electrical Engineering? Part 1 (Antiquity to 1900)

Slides:



Advertisements
Similar presentations
Important Historical Figures
Advertisements

E LECTRICITY AND M AGNETISM.  Electricity - a basic feature of matter that makes up everything in the universe. When people hear the word electricity,
PRESENTED BY PAYTON FAKER JAWS, JANUARY 22, 2015.
Electromagnetism chapter 21
Unit 11 Magnetism.
Chaos, Communication and Consciousness Module PH19510 Lecture 6 Radio Days.
Great Ideas in Science: Lecture 4 Electricity and Magnetism Professor Robert Hazen UNIV 301 Great Idea: Electricity and magnetism are two different aspects.
ELECTRICITY, MAGNETISM AND ELECTROMAGNETICS: JAMES CLERK MAXWELL: SYMMETRY AND UNIFICATION IN PHYSICS Michael Bass College of Optics and Photonics University.
ELECTRICITY 1 Important Historical Figures. Electricity B.C.  The word electricity came from the ancient Greek word electron which meant ‘amber’ or ‘amber.
L 28 Electricity and Magnetism [6] magnetism Faraday’s Law of Electromagnetic Induction –induced currents –electric generator –eddy currents Electromagnetic.
Chapter 23 Electric Fields Summer 1996, Near the University of Arizona.
A Brief History of Electricity Lecture L0.0. Some Electrical Pioneers Ancient Greeks William Gilbert Pieter van Musschenbroek Benjamin Franklin Charles.
Electricity and Magnetism CSIRO Education ACT. CSIRO. A Historical Perspective Some key figures Thales of Miletus (600BC) Rubs amber and documents creation.
An Introduction to Electrical Engineering Aaron Glieberman August 5, 2010.
PROJECT Faraday's law of induction Qianmeng Gu(qxg5019) Linnan Zhang(lqz5068) Ying Ye(yoy5069)
Nineteenth century produced a revolution in understanding of electricity and magnetism Culminated in the work of James Maxwell. Electricity and magnetism.
Eleanor Roosevelt High School Chin-Sung Lin Lesson 21.
Electromagnetic Waves. Electromagnetic waves are simply oscillating electric and magnetic fields where the they move at right angles to each other and.
History of Electromagnetic Forces
Electromagnetic Induction
Spring 2006  Harvard Science, A 52 FHA+MBM Lecture 17 1 Motors, Electrical Devices, and Videos of Lighting and Wiring the Nation Science A 52 Lecture.
ELECTRICITY.
Telecommunication Pioneers Day 3. Benjamin Franklin b 1747 Leydn jar was the first capacitor b 1752 discovers that electricity has a positive and a negative.
Basic Electronics Concepts & Components Frank Shapleigh.
AP Physics Unit 4: Electricity
The Second Information Superhighway was… Passing current in wires to transmit information over long distances. With the discovery that electrical currents.
Electromagnetic radiation l MAXWELL'S EQUATIONS: are four differential equations summarizing nature of electricity and magnetism: (formulated by James.
PROJECT Faraday's law of induction
Christopher Crawford PHY
ELECTROMAGNETISM. Magnets  A magnet from Greek word ( μαγνήτις λίθος magn ḗ tis líthos, "Magnesian stone"). μαγνήτις λίθοςmagn ḗ tislíthosMagnesian 
Unit: Energy and Control- Electricity.  English Scientist William Sturgeon invented the first electromagnet in He wrapped a coil of wire around.
Chapter 18 Electricity at Rest. A Bit of History Ancient Greeks Ancient Greeks Observed electric and magnetic phenomena as early as 700 BCObserved electric.
ELECTRICITY and MAGNETISM.  Several thousand years ago, the ancient Greeks observed that a substance called amber attracted bits of lightweight material,
Chaos, Communication and Consciousness Module PH19510 Lecture 4 The Dawn of the Electric Age.
Magnetism and Induction Early Ideas 4 Described by Ancient Greeks 4 “Lodestones” found on the Isle of Magnesia 4 North and South poles 4 Magnets obey.
Chapter 17 & 18 Discovery Notes.
 Morse code is a method of communication that relies on the transmitting of an alphabet constructed from dots and dashes.
Brief History of electromagnetism. Contents 1.History 1. Ancient times. 1. Ancient times. 2. Mid-times 2. Mid-times 3. Early modern times. 3. Early modern.
1. What are some inventions you use in your daily life? 2. How would your life be different without these inventions?
1 A History of Radio Technology Demystifying Telecommunications By: Al Klase.
Electricity A Brief History. The Shocking History of Electricity Around 600 BC Greeks found that by rubbing a hard fossilized resin (Amber) against a.
Electricity From then til Now….. Noteworthy Scientists and Inventors 1729 The English physicist Stephen Gray discovered electrical conductivity in 1729.
1 MAGNETISM.
Technical English for Electrical Engineering F.Bardak Manisa Celal Bayar University Fall 2015.
Electromagnetism A study of the relationship between magnets & electricity.
Electrical Production of Sound 1Electric Circuits 2Electric Current 3Resistance 4Voltage 5Ohm’s Law 6Series and Parallel Circuits 7Electric Energy and.
Chapter 3. INTRODUCTION TO CELLULAR COMMUNICATION :  Mobile communication systems include one of the largest mass-market application areas of digital.
Electrostatics Effects in Everyday Life.  Electric & magnetic effects in every day life  Electric phenomena may produce magnetic effects and magnetic.
Electricity.
L 28 Electricity and Magnetism [6] magnetism Faraday’s Law of Electromagnetic Induction –induced currents –electric generator –eddy currents Electromagnetic.
Chapter 15 Electric Forces and Electric Fields. First Observations – Greeks Observed electric and magnetic phenomena as early as 700 BC Found that amber,
Electromagnetic Induction 4 Quiz 1.Who discovered electromagnetic induction? a)Michael Faraday b)Thomas Edison c)Joseph Henry 2.A transformer.
Magnetism and Electromagnetic Induction PHYSICS 1-2 MR. CHUMBLEY CHAPTER 19: MAGNETISM CHAPTER 20: ELECTROMAGNETIC INDUCTION.
History of Electromagnetics Stuart A. Long Department of Electrical and Computer Engineering University of Houston.
Magnetism Physics 1. History and Background  Lodestones are rocks with magnetic properties  Were commonly found in regions of Magnesia in Greece  Attracted.
WHAT IS ELECTRICITY? Electricity Electricity - most sophisticated form of energy in use in the world today Primary way to meet growing demand - build power.
What are the basic characteristics of electricity? Electricity is a form of energy produced by the flow of electrons from one atom to another. Electricity.
Making the Connection. ► All matter is made up of extremely small particles called ATOMS which are constantly in motion.
The law that the force between electric charges varies inversely with the square of the distance between the charges was proved experimentally by the British.
電磁學歷史的報告AVI檔 通訊一甲 B 李忠憲.
Concepts & Components Frank Shapleigh
The magnetic field surrounding a coil in an AC circuit is constantly changing, and constantly impedes the flow of current in the circuit because of the.
Chapter 20.1 Advances in Technology and Communication.
Communicating through dots and dashes
1 MAGNETISM.
Electromagnetic Induction
Electricity From then til Now…..
1 MAGNETISM.
ENERGY & POWER SYSTEMS JKUSH
Presentation transcript:

ECE 1304 Introduction to Electrical and Computer Engineering What is Electrical Engineering? Part 1 (Antiquity to 1900)

What is Electricity? Electromagnetism is a property of the universe that may be used to … –Transmit and convert energy. –Transmit and manipulate information. Electrical Engineers use these properties to make useful things.

Thales of Miletus ( BC) Described static electricity and magnetism. He noticed that when amber (fossilized tree resin) was rubbed with fur, it would attract other objects (like bits of straw). The classical Greek name for amber was ἤ λεκτρον (ēlektron). He also noticed that lodestone (a naturally magnetized mineral) attracted bits of iron. Lodestones may have come from Magnesia and were known as μαγνήτις λίθος (magnētis lithos, “Magnesian stone”)

William Gilbert ( ) The Father of Electrical Engineering Wrote De Magnete (On the Magnet and Magnetic Bodies, and on the Great Magnet the Earth, 1600) in which he described the earth as a magnet. He also described static electricity and called it electric force (because he too, used amber). Invented the Electroscope to detect electric charge.

Otto von Guericke ( ) Invented an electrostatic generator. A Sulphur ball was rotated in a wooden cradle and rubbed by hand. The charged ball was then transported on the end of an insulating rod.

Alessandro Volta ( ) Italian physicist and chemist, invented the electrical battery by alternately stacking copper and zinc discs separated by brine soaked cloth creating the Voltaic Pile. The unit of electric potential is named after him.

André-Marie Ampère ( ) Demonstrated the connection between electricity and magnetism by showing that two parallel wires carrying electrical current experienced a force. The unit of electrical current is named after him.

Gaston Planté ( ) Invented the lead-acid battery in His was the first battery that could be recharged by passing a reverse current through it. Planté's first model consisted of two lead sheets separated by rubber strips and rolled into a spiral. His batteries were first used to power the lights in train carriages while stopped at a station. The re-chargeable lead-acid battery is used in automobiles.

Michael Faraday ( ) Discovered electromagnetic induction. A time- varying current passing through a coil can induce a current in a second (electrically isolated coil). Constructed the first electric generators and motors. Inexplicably honored by his name used as the unit of Capacitance, the Farad.

Faraday’s experiment with induction.

Joseph Henry ( ) Invented a practical electromagnetic rely. This became the basis of the electrical telegraph. The unit of Inductance is named for him.

James Clerk Maxwell ( ) Formulated the Classical Theory of Electromagnetics. Brought together electricity and magnetism into a unifying set of equations. Demonstrated that electric and magnetic fields propagate through space as waves. Demonstrated that light, electricity and magnetism are manifestations of the same phenomenon.

13 Maxwell’s Equations (Integral Form)

14 Maxwell’s Equations (Vector Form)

15 Maxwell’s Equations

Heinrich Hertz ( ) Proved the existence of electromagnetic waves that were theorized by Maxwell. The unit of frequency was named in his honor.

Pavel Schilling ( ) Russian diplomat. Built the first electric telegraph. Schilling's first electromagnetic telegraph was set up in his apartment in St Petersburg in 1832.

Samuel Morse ( ) American Painter and developer of electromagnetic telegraphy. In 1844, Morse sent the message “WHAT HATH GOD WROUGHT” from Washington, D.C., to Baltimore, Maryland. Developed a code that assigned a set of dots and dashes to each letter of the English alphabet and allowed for the simple transmission of complex messages across telegraph lines.

Morse Code

High-speed Communication!

Pony Express Route April 3, 1860 – October 24, 1861

Telegraph Key (1854)

Telegraphic Instruments

Alexander Graham Bell ( ) In 1875, Bell developed an acoustic telegraph that used frequency division multiplexing to transmit multiple telegraph messages on a single line. Patent 174,465, issued on March 7, 1876 covered “the method of, and apparatus for, transmitting vocal or other sounds telegraphically... by causing electrical undulations, similar in form to the vibrations of the air accompanying the said vocal or other sound.”

Bell placing the first New York to Chicago telephone call in 1892

Electric Automobile Thomas Parker, 1884 London

Electric Automobile 1907 Detroit Electric