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COMMUNICATIONS

COMMUNICATIONS. ist2_9243540-universal-icons-set-8wireless. mailer.fsu.edu/.../EarlyTankCommunications.jpg. www.textually.org/.../set2/mobileTelephones2.jpg. i.telegraph.co.uk/.../01251/childtv_1251151c.jpg. static.howstuffworks.com/gif/radio-show-1.jpg.

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COMMUNICATIONS

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  1. COMMUNICATIONS ist2_9243540-universal-icons-set-8wireless

  2. mailer.fsu.edu/.../EarlyTankCommunications.jpg

  3. www.textually.org/.../set2/mobileTelephones2.jpg

  4. i.telegraph.co.uk/.../01251/childtv_1251151c.jpg

  5. static.howstuffworks.com/gif/radio-show-1.jpg

  6. static.panoramio.com/photos/original/8406495.jpg

  7. COMMUNICATIONS • Elements of communication • How does communication travel? • Communication through sound waves mortongroveil.org

  8. Elements of Communication transmitter receiver www.tecno12-18.com Message: information sent in a communication channel

  9. How does communication travel? Sound waves cables zdnet.com isvr.soton.ac.uk

  10. Communication through sound waves nanobioart.com

  11. What’s a sound wave? • A soundwave is a disturbance which travels through space . • The waves carry signals from one place to another jdsage.com jasonmar.com adsoftheworld.com

  12. Representation of sound waves • They are usually represented as wavy lines www.tecno12-18.com

  13. Parts of a sound wave crest axis trough Axis: the line running through the middle of the wave patern. Crest: the top part of a wave Trough: the lowest part of a wave sci-toys.com

  14. Characteristics of a sound wave Wavelength (λ) CYCLE`:Part of a wave that is continuously repeated amplitude(A) www.tecno12-18.com Amplitude (A):The distance from the axis to the top of the crest or the bottom of the trough www.tecno12-18.com Wavelenght(λ):Distance between two adjoining crests

  15. FREQUENCY • Frequency (f): number of waves per second • Mesure of frequency: Hertz(Hz) mendonphysics2007p9.blogspot.com

  16. Relationship between Wavelength and Frequency • Short wavelength high frequency. • Long wavelenghtlow frequency.

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