Waves Sound Light - WordPress.com · 2016. 6. 6. · dio waves FM radio short-wave 1 kilometre AM...

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Light https://www.youtube.com/watch?v=9udYi7exojk

Transcript of Waves Sound Light - WordPress.com · 2016. 6. 6. · dio waves FM radio short-wave 1 kilometre AM...

Page 1: Waves Sound Light - WordPress.com · 2016. 6. 6. · dio waves FM radio short-wave 1 kilometre AM radio long-wave radio 10-11 1 pico- metre (pm) gamma rays 10-10 10-9 1 nano- metre

Lighthttps://www.youtube.com/watch?v=9udYi7exojk

Page 2: Waves Sound Light - WordPress.com · 2016. 6. 6. · dio waves FM radio short-wave 1 kilometre AM radio long-wave radio 10-11 1 pico- metre (pm) gamma rays 10-10 10-9 1 nano- metre

What do X-rays, light, microwaves, radio waves, and infrared

have in common?

Page 3: Waves Sound Light - WordPress.com · 2016. 6. 6. · dio waves FM radio short-wave 1 kilometre AM radio long-wave radio 10-11 1 pico- metre (pm) gamma rays 10-10 10-9 1 nano- metre

Electromagnetic Spectrum

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Electromagnetic Spectrum

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Page 6: Waves Sound Light - WordPress.com · 2016. 6. 6. · dio waves FM radio short-wave 1 kilometre AM radio long-wave radio 10-11 1 pico- metre (pm) gamma rays 10-10 10-9 1 nano- metre
Page 7: Waves Sound Light - WordPress.com · 2016. 6. 6. · dio waves FM radio short-wave 1 kilometre AM radio long-wave radio 10-11 1 pico- metre (pm) gamma rays 10-10 10-9 1 nano- metre
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Page 9: Waves Sound Light - WordPress.com · 2016. 6. 6. · dio waves FM radio short-wave 1 kilometre AM radio long-wave radio 10-11 1 pico- metre (pm) gamma rays 10-10 10-9 1 nano- metre
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Page 11: Waves Sound Light - WordPress.com · 2016. 6. 6. · dio waves FM radio short-wave 1 kilometre AM radio long-wave radio 10-11 1 pico- metre (pm) gamma rays 10-10 10-9 1 nano- metre

Electromagnetic Waves

• Electromagnetic waves are produced by vibrating electric charges.

• When an electric charge vibrates, its electric field changes, producing a changing magnetic field.

• The changing magnetic field produces a changing electric field.

• The changing electric field produces a changing magnetic field.

• Creates a transverse wave

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How Electromagnetic Waves Travel

• Electromagnetic waves do not need a medium to travel through.

• These waves can travel through empty space as well as through mediums like air or water!

• Electromagnetic waves also do not lose energy as they travel.

• Goes straight and spreads out until it hits matter = change in direction

Page 13: Waves Sound Light - WordPress.com · 2016. 6. 6. · dio waves FM radio short-wave 1 kilometre AM radio long-wave radio 10-11 1 pico- metre (pm) gamma rays 10-10 10-9 1 nano- metre

If you could travel at the speed of light, you could go around Earth's

equator 7.5 times in one second.

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What changes the direction of a wave?

• Reflection

• the bouncing back of a wave from a surface

• Refraction

• the bending of waves due to change in speed

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Prisms

https://njctl.org/video/?v=dH1YH0zEAik


La mesura del Metre

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.J OCT i 4 · were taken at 20 metre intervals, with detailed 10 metre readings taken over anomalous areas. The electromagnetic survey was run with a 160 metre coil spacing.

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