Light and the Electromagnetic Spectrum. Light as a Wave light is a visible form of energy most of...
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Transcript of Light and the Electromagnetic Spectrum. Light as a Wave light is a visible form of energy most of...
![Page 1: Light and the Electromagnetic Spectrum. Light as a Wave light is a visible form of energy most of the energy that surrounds us is invisible this energy.](https://reader033.fdocuments.in/reader033/viewer/2022061305/5513f25255034679748b5c8c/html5/thumbnails/1.jpg)
Light and the Electromagnetic Spectrum
![Page 2: Light and the Electromagnetic Spectrum. Light as a Wave light is a visible form of energy most of the energy that surrounds us is invisible this energy.](https://reader033.fdocuments.in/reader033/viewer/2022061305/5513f25255034679748b5c8c/html5/thumbnails/2.jpg)
Light as a Wave
• light is a visible form of energy
• most of the energy that surrounds us is invisible
• this energy travels in waves made of electric and magnetic fields
• called “Electromagnetic Radiation”
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Light as a Wave
Electromagnetic Spectrum = the entire range of visible and invisible energy waves
![Page 4: Light and the Electromagnetic Spectrum. Light as a Wave light is a visible form of energy most of the energy that surrounds us is invisible this energy.](https://reader033.fdocuments.in/reader033/viewer/2022061305/5513f25255034679748b5c8c/html5/thumbnails/4.jpg)
Properties of Waves
wavelength
wavelength
amplitude
amplitude
![Page 5: Light and the Electromagnetic Spectrum. Light as a Wave light is a visible form of energy most of the energy that surrounds us is invisible this energy.](https://reader033.fdocuments.in/reader033/viewer/2022061305/5513f25255034679748b5c8c/html5/thumbnails/5.jpg)
Wavelengths of the Electro-Magnetic Spectrum
![Page 6: Light and the Electromagnetic Spectrum. Light as a Wave light is a visible form of energy most of the energy that surrounds us is invisible this energy.](https://reader033.fdocuments.in/reader033/viewer/2022061305/5513f25255034679748b5c8c/html5/thumbnails/6.jpg)
Wavelength and Colour
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Seeing Colour
![Page 8: Light and the Electromagnetic Spectrum. Light as a Wave light is a visible form of energy most of the energy that surrounds us is invisible this energy.](https://reader033.fdocuments.in/reader033/viewer/2022061305/5513f25255034679748b5c8c/html5/thumbnails/8.jpg)
Pinhole Camera
![Page 9: Light and the Electromagnetic Spectrum. Light as a Wave light is a visible form of energy most of the energy that surrounds us is invisible this energy.](https://reader033.fdocuments.in/reader033/viewer/2022061305/5513f25255034679748b5c8c/html5/thumbnails/9.jpg)
How Light is Transmitted
![Page 10: Light and the Electromagnetic Spectrum. Light as a Wave light is a visible form of energy most of the energy that surrounds us is invisible this energy.](https://reader033.fdocuments.in/reader033/viewer/2022061305/5513f25255034679748b5c8c/html5/thumbnails/10.jpg)
Transparent:
allows light to pass through
Translucent:
allows some light to pass through
Opaque:
allows no light to pass through
![Page 11: Light and the Electromagnetic Spectrum. Light as a Wave light is a visible form of energy most of the energy that surrounds us is invisible this energy.](https://reader033.fdocuments.in/reader033/viewer/2022061305/5513f25255034679748b5c8c/html5/thumbnails/11.jpg)
Light Reflection
• The reason we see objects is because they reflect light
![Page 12: Light and the Electromagnetic Spectrum. Light as a Wave light is a visible form of energy most of the energy that surrounds us is invisible this energy.](https://reader033.fdocuments.in/reader033/viewer/2022061305/5513f25255034679748b5c8c/html5/thumbnails/12.jpg)
Smooth Surface
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Rough Surface
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Reflection in a Plane Mirror
![Page 15: Light and the Electromagnetic Spectrum. Light as a Wave light is a visible form of energy most of the energy that surrounds us is invisible this energy.](https://reader033.fdocuments.in/reader033/viewer/2022061305/5513f25255034679748b5c8c/html5/thumbnails/15.jpg)
Activity 4.11
How Light Reflects
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A
B
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Law of Reflection:
When light reflects off a surface, the angle of incidence is always equal to the angle of reflection
i = r
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Looking in a mirror
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Looking in a mirror
![Page 20: Light and the Electromagnetic Spectrum. Light as a Wave light is a visible form of energy most of the energy that surrounds us is invisible this energy.](https://reader033.fdocuments.in/reader033/viewer/2022061305/5513f25255034679748b5c8c/html5/thumbnails/20.jpg)
Looking in a mirror
![Page 21: Light and the Electromagnetic Spectrum. Light as a Wave light is a visible form of energy most of the energy that surrounds us is invisible this energy.](https://reader033.fdocuments.in/reader033/viewer/2022061305/5513f25255034679748b5c8c/html5/thumbnails/21.jpg)
Object distance vs. Image Distance