8.2 The World Communicates

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Current Technologies	Sound Waves
Electromagnetic Waves	Future Technologies

Telecommunications: The Here and Now - webcast presentation by Prof Martijn de Sterke at the 2005 International Science School, The University of Sydney, available for modem or broadband
http://www.physics.usyd.edu.au/foundation/index_iss.html

Telecommunications: The Future- webcast presentation by Prof Martijn de Sterke at the 2005 International Science School, The University of Sydney, available for modem or broadband
http://www.physics.usyd.edu.au/foundation/index_iss.html

THE WORLD COMMUNICATES - course notes from the Purplish Hue web site, maintained by Bob Emery
http://members.optusnet.com.au/~emeryrg/serv03.htm#8.2

8.2 The World Communicates - from HSC Physics, UNSW
http://www.phys.unsw.edu.au/hsc/hsc/world_communicates.html

8.2 The world communicates - from Centre for Learning Innovation, link in the left column
http://www.lmpc.edu.au/smallFrameset.php?KLA=Science&LEVEL=Stage%206%20Physics

Making Waves: An Online Guide to Sound and Electromagnetic Radiation - from St. Mary's High School, New York
http://www.smgaels.org/physics/home.htm

Virtual Labs & Simulations - from Hazelwood School District
http://www.hazelwood.k12.mo.us/~grichert/sciweb/applets.html

Project Java - interactive Java applets, including Snell's Law, from Stony Brook University
http://www.eserc.stonybrook.edu/ProjectJava/

General Physics Java Applets - developed by B.Surendranath Reddy, includes Transverse Waves, Longitudinal waves and Doppler Effect
http://surendranath.tripod.com/
also Australian mirror site
http://www.vlo.net.au/suren/Applets.html

Jave Applet - of both longitudinal and transverse wave, from National Taiwan Normal University
http://www.phy.ntnu.edu.tw/java/waveType/waveType.html

Physics Java Applets by C.K.Ng - including transverse and longitudinal waves
http://www.ngsir.netfirms.com/englishVersion.htm

Waves and Energy Transport - from The Physics Classroom, Glenbrook South High School in Glenview, Illinois
http://www.glenbrook.k12.il.us/gbssci/phys/Class/waves/wavestoc.html

How Stuff Works: How a Cell [mobile]Phone Works - from How Stuff Works
http://www.howstuffworks.com/cell-phone.htm

Cell Phone Facts - from Food and Drug Administration and Federal Communications Commission
http://www.fda.gov/cellphones/

Mobile phones 'safe for brains' - a file from BBC News
http://news.bbc.co.uk/2/hi/health/4432755.stm

Australian Mobile Telecommunications Association Mobile Phones, Health & Safety - a page of links on this topic.
http://www.amta.org.au/aoi.asp?ID=Health_and_Safety

The Mobile Phone System and Health Effects - includes details of electromagnetic waves used by mobile phones, from Australian Radiation Protection and Nuclear Safety Agency
http://www.arpansa.gov.au/issues.htm

Cellular Communications - from International Engineering Consortium
http://www.iec.org/online/tutorials/cell_comm/

Telephone History Series - from TelecomWriting.com
http://www.privateline.com/TelephoneHistory/History1.htm

How Stuff Works: How Speakers Work - from How Stuff Works
http://www.howstuffworks.com/speaker.htm

How Stuff Works: How Modems Work - from How Stuff Works
http://www.howstuffworks.com/modem.htm

Why Don't High Speed Modems Work At Their “Rated” Speed? - from Melbourne PC CLub
http://member.melbpc.org.au/~amfowler/hsmodem.htm

What is ADSL? - from ADSL Guide, Your Guide to Broadband Internet, UK
http://www.adslguide.org.uk/guide/summary.asp

How Stuff Works: How Cable Modems Work - from How Stuff Works
http://www.howstuffworks.com/cable-modem.htm

How Cable Modems work - from International Engineering Consortium
http://www.iec.org/online/tutorials/cable_mod/topic01.html

How Stuff Works: How VDSL Works - very High Bit-rate Digital Subscriber Line, from How Stuff Works
http://www.howstuffworks.com/vdsl.htm

How Stuff Works: How Digital Television Works - from How Stuff Works
http://www.howstuffworks.com/dtv.htm

Digital Television Crash Course - from PBS, USA. Online history of television
http://www.pbs.org/opb/crashcourse/

HOW THINGS WORK - from University of Virginia physics web site
http://howthingswork.virginia.edu/

Acoustics and Vibration Animations - from Kettering University
http://www.gmi.edu/~drussell/demos.html

Physics and Psychophysics of sound and music - from AVATAR SPACE DESIGN
http://www.avatar.com.au/courses/PPofM/

What sound waves look like and how they act - from TelecomWriting.com's Telephone History Series
http://www.privateline.com/TelephoneHistory/soundwaves.html

Gizmos - from Explore Learning, five minutes free daily interactives, search for "Sound"
http://www.explorelearning.com/

Sound and Hearing - from HyperPhysics Concepts, Georgia State University
http://hyperphysics.phy-astr.gsu.edu/hbase/sound/soucon.html

Lessons on Waves Light & Sound - from Physics Zone
http://www.sciencejoywagon.com/physicszone/lesson/09waves.htm

Sound Waves and Music - from The Physics Classroom, Glenbrook South High School in Glenview, Illinois
http://www.glenbrook.k12.il.us/gbssci/phys/Class/sound/soundtoc.html

Light and Optics: Readings - from Patterns in Nature, from Arizona Collaborative for Excellence in Preparation of Teachers and Arizona State University
http://acept.la.asu.edu/PiN/rdg/readings.shtml

Electromagnetic Waves - from Physics 2000, an interactive journey through modern physics!, University of Colorado
http://www.Colorado.EDU/physics/2000/waves_particles/

Electromagnetic Waves have different wavelengths - with separate pages on various types of electromagnetic radiation, from Imagers, NASA
http://imagers.gsfc.nasa.gov/ems/waves3.html

Energy Fundamentals 1 1 Naval Weapons Systems - from US Naval Academy
http://www.fas.org/man/dod-101/navy/docs/fun/part02.htm

Amplitude Modulation - animated .gif, from Ham Radio India
http://www.hamradioindia.com/HRI-THEOR/General/AM.htm

Frequency Modulation - animated .gif, from Ham Radio India
http://www.hamradioindia.com/HRI-THEOR/General/FMod_files/aa-fm_rate.gif

Frequency Modulation - animated .gif, from Ham Radio India
http://www.hamradioindia.com/HRI-THEOR/General/FMod_files/aa-ovrmod-fm.gif

Bandwidth - from Wikipedia
http://en.wikipedia.org/wiki/Bandwidth

Broadband explained - from Playstation Web site
Explanation

Reflection and the Ray Model of Light - from The Physics Classroom, Glenbrook South High School in Glenview, Illinois
http://www.glenbrook.k12.il.us/gbssci/phys/Class/refln/reflntoc.html

Refraction and the Ray Model of Light - from The Physics Classroom, Glenbrook South High School in Glenview, Illinois
http://www.glenbrook.k12.il.us/gbssci/phys/Class/refrn/refrntoc.html

Student Activities

Measuring Refractive Index - from Brooklyn College
http://www.brooklyn.cuny.edu/bc/ahp/CellBio/RefIndex/RI.Main.html

Inverse Square law - from Science Snacks at Exploratorium
http://www.exploratorium.edu/snacks/inverse_square_law.html

Indexing refraction - from NASA, Teacher guide and student sheets as .pdf.
http://media.nasaexplores.com/lessons/04-020/9-12_2.pdf

Inverse Square law - from NASA
http://media.nasaexplores.com/lessons/02-001/9-12_2.pdf

Light intensity - from NASA
http://media.nasaexplores.com/lessons/01-069/9-12_1.pdf

Radio waves and the ionosphere - from NASA
http://image.gsfc.nasa.gov/poetry/NASADocs/nasa4.pdf

Absorption - from Everything Weather includes atmospheric absorption of electromagnetic radiation and transmission window
http://www.everythingweather.com/atmospheric-radiation/absorption.shtml

Infrared Windows - from Infrared Astronomy, California Institute of Technology, Jet Propulsion Laboratory
http://www.ipac.caltech.edu/Outreach/Edu/Windows/irwindows.html

The CSE Light Tour - from University of California Berkeley
http://cse.ssl.berkeley.edu/light/light_tour.html

Imagine the Universe - from Goddard Space Flight Center, NASA
http://imagine.gsfc.nasa.gov/docs/homepage.html

The Aurora explained - from Geophysical Institute
http://www.alaskascience.com/aurora.htm

HF Doppler Sounding of the Auroral Ionosphere - from University of Leicester
http://ion.le.ac.uk/dope/doppler.html

Space Storms and Radio Communications - from Windows to the Universe, University Cooperative for Atmospheric Research and the University of Michigan
http://www.windows.ucar.edu/spaceweather/effects3.html

Ionosphere and its Influence on Radio Communications - from Resonance: Journal of Science Education, in pdf
http://www.ias.ac.in/resonance/July2000/pdf/July2000p28-43.pdf

How Fiber Optics Work - from How Stuff Works - includes topics such as What are Fiber optics? and Physics of Total Internal Reflection
http://www.howstuffworks.com/fiber-optic.htm

Communication channels - from University College London
http://www.cs.ucl.ac.uk/staff/S.Bhatti/D51-notes/node19.html

Satellite Communication Tutorial - from the Glenn Research Center, NASA
http://ctd.grc.nasa.gov/rleonard/

Global Positioning Systems

GPS and never having to say: 'Where am I?' - from NOVA, Australian Academy of Science
http://www.science.org.au/nova/066/066key.htm

The Global Positioning System - from Beyond Discovery, The National Academy of Sciences
http://www.beyonddiscovery.org/content/view.article.asp?a=458

GPS Primer - from The Aerospace Corporation
http://www.aero.org/education/primers/gps/

Global Positioning System Overview - from The Geographers' Craft Project, University of Colorado Boulder
http://www.colorado.Edu/geography/gcraft/notes/gps/gps_f.html

All About GPS - from Trimble GPS
http://www.trimble.com/gps/

GPS Article - from Choice magazine
 http://www.choice.com.au/viewArticle.aspx?id=101088&catId=100447&tid=100008&p=3

GPS: A New Constellation - from National Air and Space Museum, Smithsonian Institute
http://www.nasm.si.edu/gps/

About Satellite Navigation - from Magellan GPS
http://www.magellangps.com/products/gps_units.asp

Introduction to the Global Positioning System for GIS and TRAVERSE - from Corvallis Microtechnology
http://www.cmtinc.com/gpsbook/index.htm

Modern Communication: The Laser & Fiber-Optic Revolution - from Beyond Discovery, The National Academy of Sciences
http://www.beyonddiscovery.org/content/view.article.asp?a=438

Fiber Optics - from HyperPhysics, Georgia State Universtiy
http://hyperphysics.phy-astr.gsu.edu/hbase/optmod/fibopt.html

How Satellite TV Works - from How Stuff Works, includes the design of the dish
http://www.howstuffworks.com/satellite-tv.htm

How Satellite Radio Works - from How Stuff Works
http://www.howstuffworks.com/satellite-radio.htm

How DVDs and DVD Players Work - from How Stuff Works
http://www.howstuffworks.com/dvd.htm

How a Digital Video Drive Works - Electricity and Magnetism, Molecular Expressions
http://micro.magnet.fsu.edu/electromag/computers/digitalvideodiscs/dvd.html

How A Compact Disc Works - a Java Applet from Electricity and Magnetism Interactive Java Tutorials, Molecular Expressions
http://micro.magnet.fsu.edu/electromag/java/cd/

How Internet Radio Works - from How Stuff Works
http://www.howstuffworks.com/internet-radio.htm

Internet radio - from Wikipedia
http://en.wikipedia.org/wiki/Internet_radio

Voice over internet protocol - from Wikipedia
http://en.wikipedia.org/wiki/VOIP

How Wireless Internet Works - from How Stuff Works
http://www.howstuffworks.com/wireless-internet.htm

How the Airborne Internet will Work - from How Stuff Works
http://www.howstuffworks.com/airborne-internet.htm

Holographic data storage - from IBM Research
http://www.research.ibm.com/journal/rd/443/ashley.html

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