LT 2.4 -Properties of Light

What is a light wave?

Light waves are transverse waves created by the metric and magnetic fields oscillating from high to low

What are electromagnetic waves

light that includes radio, microwave, infrared, ultraviolet, and X rays

What is unpolarized light?

Light from natural sources (sun) and most artificial sources like light bulbs is oriented in all different directions

What is polarized light?

Polarized light is where the light waves are all oriented in a single plane

Higher frequency means…

Smaller wavelength

Closer to Violet

Lower frequency means…

Longer wavelength

Closer to red

Brightness

Determined by the wave’s amplitude

Higher amplitude= brighter light

Interference within Sound Waves

This is when waves overlap each other

Creates a resultant wave with a different amplitude from the OG. For sound waves, it changes into a louder or quieter sound.

Interference between Light Waves

Makes light smaller (narrow)

Dropper Effect

What happened when the source of wave is moving.

Moving away, longer wave length. Lower frequency

Moving towards you, shorter wavelength, higher frequency

Dropper Effect for Light

Changing the frequency of the light will change (shift) its color.

Blue shifted in Color

Moving towards you, higher frequency

Red shifted

Moving away from you, lower frequency