Hee Joong Kim Sunghun Jun Saebom Kim Seung Jae You

 Electricity is the movement of electrons between the atoms that are either positively or negatively charged.  An atom that loses electrons has positive charge  An atom that gains electrons have negative charge  Also defined as a variety of phenomena resulting from the presence and flow of electric charge

 Thales of Miletus ( BC)  The first to acknowledge that the amber stone when rubbed produces an attraction force over some object  William Gilbert (17 th century)  Studied phenomena of electricity and magnetism, and distinguished between the electric effect of amber and magnetic effect of lodestone  Gave name ‘electricus’ to the phenomena of attraction shown by amber ▪ Rise to the modern word of electricity

 Benjamin Franklin (18 th century)  Known as the father of electricity  Kite experiment  Performed experiment of flying a kite during a thunderstorm  Discovered that lightning and electricity were somehow related

 Alessandro Volta  Constructed the first device to produce a steady electricity, voltaic pile (electric battery). ▪ Positive and negative charged connectors created transmission of electricity.  Michael Faraday  Created the electric dynamo, a precursor of modern power generators  Opened the door to the new era of electricity

 Nikola Tesla  Developed the first actual power system  Developed florescent lights and publically used it prior to Ericson’s invention of the incandescent light

 Static Electricity  A condition that exists when electrons are displaced and remain  Usually result of friction, such as lightning bulb  Current Electricity  A constant flow of electrons from atom to atom

 Historic View  Perceived electricity as the power of the Gods  Ex: Certain species of eels and rays, possess the defensive power to generate electric shocks and ancient people thought these shocks could cure headache or gout. ▪ They did not, however, use the term ‘electricity’ for what they were experiencing.

 Housing System  Enlighten rooms with kerosene lamps instead of stands or incandescent lights, and heated up the rooms with wood or coal stoves instead of electric heater.  Transportation  Transportations such as car and train could not be produced due to lack of electricity.  People had to travel by walk or carriage.

 Telecommunication  Used smoke or fire to deliver urgent news or location  Economy  Raised horses and cows for economic activity  Increased traveling time by riding carriage or horse  Poor quality of life with lack of technology and electricity

 Thermoelectric Power Generator  Hydroelectric Power Generation  Nuclear Power Plants

1. Power plant gather to heat up water 2. Vapors water 3. The water goes into a big tube that travels to turbine 4. Spins a magnet inside the generator to make electric force

1. Generated by the force of falling water 2. Water flows through a dam and turns a turbine, which turns a generator ▪ Turbines contain metal coils surrounded by magnets that spin over the metal coils, which produces electricity

 Steam power plant that is fueled by a radioactive element such as uranium. 1. The fuel is placed in a reactor and the individual atoms are allowed to split apart. 2. The splitting process releases great amounts of energy that is used to heat water until it turns to steam. 3. The mechanics of a steam power plant take over that it pushes on turbines, which force coils of wire to interact with a magnetic field to produce an electricity

 Entertainment  Enable us to watch television, listen radio and music, and use electric devices such as cell phone and personal computer  Comfort  Help housework with washing machine, vacuum cleaner, microwave, etc.  Enable us to read or work at night as bright as noon time

 Information System  Usage of cell phone or internet with electricity base enable us to get new information faster than any other time  Ex: Stock market, international telephone service  Medical Service  Enable us to use x-ray, CT scan, MRI, CPR device etc.  Provide better surgery with modern technology

 Sewage Treatment  Remove contaminants from wastewaters and household sewage with chemical, biological and physical methods based on electricity usage  Industrialization  Promoted heavy industries and massive production  Decreased time cost and labor forces with developed technology and electricity

 Sound  The electrical interaction will create a force that move electrons in and out together, which creates a sound wave  Speed of moving in and out is the frequency of the sound, or pitch, and the amount of the cone movement is the amplitude of the sound, or volume  Ex: Speaker

 Light  Electrical energy into the metal flows into the circuit such as light bulb  In circuit, amount energy was delivered these electrons pass along the filament  Heat  The resistance of electrons flowing through conductors produce heat energy  Ex: Electric stove, electric pad, iron

  y y   o-discovered-electricity/ o-discovered-electricity/   agnetism.htm agnetism.htm  ricity.html ricity.html

 tricity-light-up-bulb.html. tricity-light-up-bulb.html   /2005/07/68074?currentPage=all /2005/07/68074?currentPage=all  8/electricity-in-the-ancient-world/ 8/electricity-in-the-ancient-world/  erating-electricity/nuclear-how.asp erating-electricity/nuclear-how.asp  al/energy/hydropower-plant1.htm al/energy/hydropower-plant1.htm