EMS

Lesson 2

WAVELENGTH: Long – from a few Km to a few meters FREQUENCY: Lowest USES: Communications, MRI, GPS ENERGY: Low

AM and FM AM radio change the amplitude of the carrier wave 540,000hz-1,600,000hz FM vary the frequency, these tend to be clearer 88,000,000hz-108,000,000hz Uses a system of satellites, ground monitoring sites, and receivers that provide your exact location on the surface of the earth.

Lesson2 WAVELENGTH: Shorter – a few cm FREQUENCY: Low USES: Satellite, Cell phone, Bluetooth, RADAR ENERGY: Low

WAVELENGTH: Getting Shorter – Less than a mm. FREQUENCY: Low USES: Thermal Images, Heat! ENERGY: Moderate

WAVELENGTH: Short, thousandths of a mm. FREQUENCY: Medium USES: Seeing! ENERGY: Moderate

WAVELENGTH: Short FREQUENCY: Medium USES: Invisible ink, reflective dyes! skin produces vitamin D kills bacteria ENERGY: Moderate

WAVELENGTH: Very Short FREQUENCY: High USES: Seeing inside the body ENERGY: High

WAVELENGTH: Very Short FREQUENCY: Very High USES: Treating Cancer, space ENERGY: High (most dangerous)