NS 1300 Dr. Hoge. Is the invisibility cloak real? How does it work?

NS 1300

Dr. Hoge

Is the invisibility cloak real? How does it work?

WavesA wave is a wiggle in time

Characteristics of WavesWavelength

Amplitude

Frequency

Velocity (remember, velocity includes the vector and magnitude)

Longitudinal WavesSound

P waves

AcousticsInterference

Resonance

Doppler Effect

Volume (amplitude of the wave)

Pitch (frequency)

So, how do speakers work?

Transverse WavesThe electromagnetic spectrum

S waves

The Electromagnetic SpectrumGamma RaysCosmic RaysX-RaysUltraviolet RadiationVisible Light SpectrumInfrared RadiationMicrowavesRadio Waves

Electromagnetic WavesWave / Particle Duality

LightThe speed of light is a constant – c

Color

Red Shift / Blue Shift

Properties of Light (and other waves)Transmission

Reflection

Refraction

Interference

Resonance

Polarization

LensesConcave Lenses

Convex Lenses

Focal Point

Photoelectric EffectPhotons and electrons are quantum particles

So, how does my TV work? How about night vision goggles?

The Human Eye

Quiz1. T or F, a wave is a wiggle in time.

2. T or F, all waves require a medium to travel through.

3. T or F, refraction is the bending of a wave.

4. T or F, a concave lens makes objects look bigger.

5. T or F, the photoelectric effect occurs when a flow of electrons is used to create light.