44 Do Now

What does Malus's Law describe in terms of light waves?

• The relationship between the angle of incidence and reflection

• The intensity of polarized light after passing through a polarizer

• The speed of light in a vacuum

• The wavelength of light in different media

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NGSS.HS-PS4-5

Which device commonly uses the principle of polarization to reduce glare for drivers?

• Magnifying glass

• Polarized sunglasses

• Microscope

• Prism

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NGSS.MS-PS4-2

Which of the following is an example of a device that uses wave polarization in everyday life?

• 3-D movie glasses

• Thermometer

• Barometer

• Stopwatch

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NGSS.MS-PS4-2

What type of light do LCD computer screens primarily use to display images?

• Polarized light

• Infrared light

• Ultraviolet light

• Gamma rays

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NGSS.MS-PS4-2

If unpolarized light passes through a polarizing filter, what percentage of the original intensity is transmitted?

• 0%

• 25%

• 50%

• 100%

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NGSS.MS-PS4-2

Which term describes the orientation of the electric field in a polarized light wave?

• Frequency

• Amplitude

• Direction of polarization

• Wavelength

What happens to the intensity of light when it passes through two polarizing filters that are perpendicular to each other?

• It doubles

• It remains the same

• It becomes zero

• It is reduced by half

Tags

NGSS.MS-PS4-2

Which of the following best describes polarization?

• The splitting of white light into colors

• The alignment of light waves in a particular direction

• The bending of light as it passes through a lens

• The increase in frequency of a light wave

What is the main function of polarizing filters in 3-D movie glasses?

• To increase brightness

• To block certain orientations of light waves

• To magnify the image

• To change the color of the image

Tags

NGSS.MS-PS4-2

A student observes that the screen of an LCD monitor appears dark when viewed through a polarizing filter at a certain angle. Which concept explains this observation?

• Reflection

• Refraction

• Polarization

• Diffraction