PPT-RET 2013: Information in Radio Waves

Ken Jacobs Tim Scaduto Fundamentals of EM spectra with emphasis on radio frequencies History of radio astronomy Information theory and Remote Sensing Information transmitted through radio Natural sources of radio . Section . 1- What . are electromagnetic waves?. WHAT DO CORDLESS PHONES AND MICROWAVE OVENS HAVE IN COMMON?. Each emits electromagnetic waves.. Remember…. A . wave. . is a repeating disturbance or movement that transfers energy through matter or space.. ELECTROMAGNETIC SPECTRUM. Training of Trainers for Grade 10 of the K to 12 Enhanced Basic Education Program. April 27 – May 2, 2015 . (Luzon Cluster). Spiraling of concepts. Module 2 Competencies. Module 2 activities. There’s a whole lot of light out there!. The Electromagnetic Spectrum. The electro-magnetic spectrum is made up of visible and . nonvisible. light.. Electromagnetic waves are produced by stars and galaxies.. Waves. Wave. A . repeating movement or disturbance that transfers energy through matter or space.. All waves carry energy without transporting matter from place to place.. Molecules pass energy along to neighbor molecules who then pass energy to neighbor. Alex Hills. Chapter 27. Summary. Communication engineer Alex Hills explains how the satellite communications systems he designed for rural Alaskans helped him develop Wi-Fi system. Because of tough terrain, laying telephone wire was not feasible, and shortwave radio signals often met interference from the Northern Lights. Alex helped devise a communications system using satellite technologies that allowed rural Alaskans to communicate across the tundra. Eventually, Hills was instrumental in linking the state’s university campuses together via satellite. The wireless network inspired Hills to develop the first Wi-Fi at Carnegie Mellon University in the 90’s.. RET 2013. MIT Haystack Observatory . Learning Objectives. Communicate. technical information about how some technological devices use the . principles of wave behavior and wave interactions with matter . Waves transfer energy!. A wave does not carry matter . It only moves matter as it travels through it.. Waves. Compression (longitudinal) waves . are waves in which the particles of the medium move in a direction . Warm-Up: February 17/18, 2016. Vibrations and Waves. Chapter 14. A . periodic motion . repeats in a regular cycle.. Examples include:. Pendulums (such as on a grandfather clock). A mass at the end of a spring. Mechanical Waves. A mechanical wave is created when a source of energy causes a vibration to travel through a medium.. A mechanical wave is a disturbance in matter that carries energy from one place to another.. Get 1 full page and 1 half page of paper. Fold full sheet of paper. about 1-1.5” short of even. Insert half sheet in the middle. Staple . across . the fold. Pick up the top two pages and starting from the bottom, cut the top two . Periodic Motion. Motion that repeats in a regular cycle is called . periodic motion. . . The revolution of a planet about its sun is an example of periodic motion. The highly reproducible period (T) of a planet is also called its year.. - Jon . Kabat. -Zinn. Waves are moving . energy. !. Most waves wind-driven. Moving energy along ocean/air interface:. Wind main disturbing force. Boundary between and within fluids with different densities. The Scottish physicist James Clerk Maxwell (1831–1879) was the first person to truly understand the fundamental nature of light. . He proved in 1865 that an electromagnetic disturbance should propagate in free space with a speed equal to that of light.. Each station has a different remit, content, style and target audience. . The BBC has delivered radio since the 1920s as part of . Public Service Broadcasting . (PSB). The Reithian concept of the BBC was to raise the cultural standards of the nation so it resisted playing solely popular music until 1967, when Radio 1 was born..