Light

Socrates and Plato ,[object Object],[object Object]

Pythagorus ,[object Object],[object Object]

Aristotle ,[object Object],[object Object]

Leonardo da Vinci ,[object Object],[object Object]

Galileo ,[object Object],[object Object],[object Object]

Olaus Roemer ,[object Object],[object Object],[object Object],1675 was the year of the first demonstration that light travels at a finite speed (a definable number)

Newton ,[object Object],[object Object],[object Object],[object Object]

Christian Huygens ,[object Object],[object Object],[object Object]

Christian Huygens ,[object Object],[object Object]

Thomas Young ,[object Object],[object Object]

Augustin Fresnel ,[object Object],[object Object]

James Clerk Maxwell ,[object Object],[object Object],[object Object],[object Object]

Albert Michelson ,[object Object],[object Object],[object Object],[object Object]

The Nature of Light ,[object Object],[object Object]

Electromagnetic Radiation ,[object Object],[object Object],[object Object]

The Electromagnetic Spectrum ,[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],LIGHT Light is the range of frequencies of electromagnetic waves that stimulates the retina of the eye.

Energy and Electromagnetic Waves ,[object Object],[object Object]

Types of Electromagnetic Waves ,[object Object],[object Object]

Types of Electromagnetic Waves ,[object Object],[object Object],[object Object]

Medium ,[object Object],[object Object]

SPEED OF LIGHT Speed of Light ( c ) = λf What is the frequency of yellow light, λ = 556nm? f = c / λ = 3 x 10^8 m/s . Convert nm  m 556 x 10^-9 m = 5.4 x 10^14 Hz c = 3.00 x 10^8 m/s

The Speed of Light ,[object Object],[object Object]

Fun Facts about the speed of light. ,[object Object],[object Object],[object Object],[object Object]

[object Object],LIGHT Represented by a solid line with an arrow indicating direction of motion

Luminated vs. Illuminated ,[object Object],[object Object],[object Object]

Luminous Vs. Illuminated ,[object Object],[object Object]

ILLUMINATION ,[object Object],[object Object],[object Object],[object Object],[object Object]

What is illumination? E (illumination) = P (luminous flux) 4Пd²(distance) Light Illuminance varies as the inverse square of the distance. Illumination drops off quickly with distance from source.

Light and Matter ,[object Object],[object Object],[object Object]

Transparent, translucent and opaque ,[object Object],[object Object],[object Object]

SHADOWS ,[object Object],[object Object],[object Object],[object Object]

Polarization ,[object Object],[object Object],EM Wave

Polarization ,[object Object],[object Object],[object Object]

Are the horizontal lines parallel or do they slope?

How many legs does this elephant have?

What does the sign say? Are you sure?

Light

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