The Electromagnetic Spectrum
Light, Sound and Waves

Infrared identification

Stories from Physics for 11-14 14-16 IOP RESOURCES

The black and olive American flags that appear on some US military uniforms are covert infrared reflectors that enable friendly soldiers to be identified with night vision goggles.

References

G. Adcock, CCT-The Eye of the Storm: Volume II – The GWOT Years, Bloomington, IN, AuthorHouse, 2012, p. v.

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Thinking About Teaching Collection

Stories from physics - Waves: light, sound and other oscillations

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Classroom Activity 11-14

Misconceptions
RESEARCH REVIEW

Some students confuse the primary colours taught in art with the primary colours of light

  • Number of Resources2
  • Number of References1
  • Number of Diagnostic Resources4
RESEARCH REVIEW Light, Sound and Waves

Many students have an understanding of how coloured filters work, some believe they change the nature of the light in some way

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