Notes 20

-5
1-Technology is a difficult concept to understand.
2-The amount of visible light is small compared to the amount of other waves of the Electromagnetic Spectrum.
3-There are alot of different ways to measure frequency.
4-Wireless technology allows us to do a lot of things.
5-Wireless devices that connect to others through a wide range are part of a network.


-4
1-How many different portions of the spectrum are there?
2-When was the electormagnetic spectrum discovered?
3-When was AM and FM discovered?
4-


-3
1-Frequency- the number of times per second that wave cycles occur.
2-Wavelength- the length of an electormagnetic wave; in other words, the length between the wave's peaks.
3-Amplifier- a device that stregnthens a signal by increasing its amplitude


-1
1-This chapter talks about The electromagnetic spectrum, wireless systems and AM and FM.