Telegraph+Electromagnetic

Telegraph Project and Research:

Inventor of the Telegraph was an artist. The Telegraph improved and refined by a machinist named Vail. Vail’s code for numbers 1 through 10 can be visually memorized in an instant and might engage students if incorporated into an activity.

http://americanhistory.si.edu/blog/2012/05/samuel-finley-breese-morse-artist-and-inventor.html http://siarchives.si.edu/blog/forgotten-history-alfred-vail-and-samuel-morse [|http://www.morrisparks.net/speedwell/tel/tel.html#avr]

The telegraph also played a big role in the Civil War.

Why might the use of the Morse Code have been a better choice than using voice communication when using electromagnetism and a wire to communicate during the Civil War? Why might the use of the Morse Code be a better choice than voice transmission, especially during the Civil War? (In other words, why might digital signals be more reliable for encoding and transmitting information than analog signals?)

NGSS MS-PS4-3 Integrate qualitative scientific and technical information to support the claim that digitized signals are a more reliable way to encode and transmit information than analog signals.

Digital signals are a series of pulses with two states - on or off. Light can be used for digital communications, such as in Morse code and CD players. Optical fibres can carry information coded in light waves or infrared waves. Lasers produce intense narrow beams of light. http://www.bbc.co.uk/schools/gcsebitesize/science/ocr_gateway/home_energy/light_and_lasersrev4.shtml

This Morse Code Translator is also interesting. []

Wireless Telegraph Radio Reciever http://www.wikihow.com/Make-a-Wireless-Telegraph





Art http://makezine.com/craft/diy-morse-code-bracelets/

Civil War Technology Trailer http://www.history.com/topics/american-civil-war/civil-war-technology