Electromagnetic Spectrum: Radio, TV, Microwaves, and Infrared

Flashcards covering frequency ranges and uses of FM Radio, Television Channels, Microwaves, and Infrared Radiation based on lecture notes.

What is the frequency range for FM Radio?

88 MHz to 108 MHz

What frequency range do Television Channels 2-6 utilize in the USA?

Between 54 MHz and 88 MHz

What frequency range do Television Channels 7-13 utilize in the USA?

Between 174 MHz and 216 MHz

What is the approximate frequency range for microwaves?

From 1 GHz to 3x 10^11 Hz

What is the approximate wavelength range for microwaves?

30cm to 1.0mm

Which microwave wavelengths can penetrate Earth's atmosphere?

Wavelengths from less than 1cm to about 30cm

List some key uses of microwaves.

Space-vehicle communications, radio astronomy, satellite communication (telephones/cell phones), airplane communication, television station communication

What is the approximate frequency range for infrared radiation?

Merges with microwaves at around 300 GHz (1.0mm wavelength) and extends to about 385 THz (780 nm wavelength)

What is the nature of infrared radiation?

Heat radiation

What are some key uses of infrared radiation?

TV remotes, motion detectors