Wavelength Perceiving Light Rd Rods Cones.

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Presentation transcript:

Wavelength

Perceiving Light

Rd Rods Cones

2) Why do objects appear in different colors and in different shades of the same color? 3) Why are most emergency vehicles and school buses painted yellowish or greenish colors? 1) How does light reach our eyes? Does light travel in a straight line?

Why do we see blue? RedOrangeYellowGreenBlueViolet Reflected White Light Absorbed Transmitted

Reflection

Refraction

Red Orange Yellow Green Blue Violet “ROY G BIV” Spectroscope - Uses diffraction grating

Definitions Spectroscope – a device that produces a color spectrum Spectrometer – an instrument that measures the intensity of light

Lunar Planetary Institute ON

Calculations: Standard Voltage

Graph

Results Collect Data Calculate % Reflectance Graph Data

Collect Data For Light & Dark Blue Felt

Human Vision

Primary Colors Complementary Colors

Can You Explain? What is happening to the light that strikes each of these jars?

Let’s Check Our Answers Transmission Absorption Reflection (Scattering) Color Selective Absorption, Transmission, and Reflection

Double Reflection Oil Film on Water

Double Reflection

Color Magic Red, Blue, and Green Filters

Perfect Filters Red removes green and blue Green removes red and blue Blue removes red and ½ green

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