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Understanding colour absorption and transmission in filters

Waves and electromagnetic radiation • The electromagnetic spectrum

Key concepts

What you'll likely be quizzed about

  • Different materials absorb light at different wavelengths.
  • When white light passes through an object, specific wavelengths are absorbed while others are reflected or transmitted.
  • The colour perceived by an observer depends on the wavelengths that are reflected or transmitted.
  • For instance, a red object reflects red light and absorbs all other wavelengths.

Flashcards

Test your knowledge with interactive flashcards

What is a transparent material?

Click to reveal answer

A transparent material allows most light to pass through without significant absorption.

Key notes

Important points to keep in mind

Filters selectively transmit light wavelengths.

Color perception depends on reflected and transmitted light.

Different colors absorb different wavelengths.

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