Chapter 16 Notes Fundamentals of Light.

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Presentation transcript:

Chapter 16 Notes Fundamentals of Light

Section 16.1 Objectives Determine the effect of distance on light’s illuminance. Calculate illuminance and luminous flux. Solve problems involving the speed of light.

Characteristics of Light Particle (photon) Wave Electromagnetic waves

Electromagnetic Waves

Speed of Light c = 3.00 x 108 m/s Relationship between frequency, wavelength, and speed is as follows: c = fλ Albert A. Michelson

Example Problem The AM radio band extends from 5.4x105 Hz to 1.7x106 Hz. What are the longest and shortest wavelengths in this frequency range?

Waves as Rays

Sources of Light Opaque media Transparent media Translucent media

Illuminance Luminous flux Illuminance

Example Problem What is the illuminance at on your desktop if it is lighted by a 1750 lm lamp that is 2.50 m above your desk?

Section 16.2 Objectives Predict the effect of mixing colors of light and pigments. Explain how light is polarized. Explain the Doppler effect as it pertains to light.

Color

Color by Addition of Light Primary colors Secondary colors

Color by Subtraction of Light Primary pigment Secondary pigment

Polarization by Filtering

The Doppler Effect http://www.youtube.com/watch?v=FhfnqboacV0

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