PS 4 Waves and Their Applications in Technologies for Information Transfer

1. PS 4 A Wave Properties

1.1. Repeating pattern of specific wave length, frequency and amplitude

1.1.1. Wave length and Frequency

1.1.1.1. Speed of travel

1.2. Can transfer Energy

1.3. Can travel by

1.3.1. Water

1.3.1.1. part of the wave is reflected at that surface and another part continues on, but at a different speed

1.3.1.1.1. Refraction

1.3.2. Sound

1.3.2.1. pressure wave in air

1.3.2.1.1. Example: Human Ear

1.3.2.2. can make matter vibrate

1.3.3. Light

1.3.3.1. Reflection

1.4. Resonance

1.4.1. Waves growing in phase and growing in amplitude.

1.4.2. Structures have particular frequencies at which they resonate

1.5. Structures

1.5.1. Peaks

1.5.2. Valleys

2. PS 4 B Electromagnetic Radiation

2.1. Radio

2.2. Magnetic

2.3. light

2.3.1. visible spectrum of color

2.3.2. reflected

2.3.3. refracted

2.3.4. absorbed

2.4. Changing wave patterns

2.4.1. electric fields

2.4.2. as particles.

2.4.3. magnetic fields

2.5. Electromagnetic Waves

2.5.1. Modern technologies

2.6. Travels thought a vacuum at the same speed

2.6.1. speed of light

2.7. Short Wave lengths

2.7.1. x-rays

2.7.1.1. can travel through soft tissue

2.7.1.2. absorbed by bone

2.7.1.3. useful in medical imagining

2.7.2. gamma rays

2.7.3. ultraviolet rays

2.7.4. Cause damage to living cells

2.8. Photovoltaic materials

2.8.1. barcode scanners

2.8.2. solar cells

2.8.3. Eye scaners

2.9. Depends on Temperature

2.9.1. Thermal energies

3. PS 4 C Information Technologies and Instrumentation.

3.1. Telescopes

3.2. Microscopes

3.3. Communication Systems

3.3.1. Light waves

3.3.2. infrared

3.3.3. radio waves

3.3.4. microwaves

3.4. Digital Signals

3.4.1. Cell Phones

3.4.2. Wired/Wireless Computers

3.4.3. convert from digitize form to voice

3.4.4. can receive and decode information

3.5. Sonar

3.5.1. Measure distances in the ocean

3.5.2. Laser pulses

3.5.2.1. Measures distances in space

3.6. Examples of tools

3.6.1. medical imaging

3.6.2. astronomical observations

3.6.3. semiconductors

3.6.4. computer chips

3.6.5. lasers