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Film summary
We can see our surroundings because of light energy. Whether light waves are being emitting from a source or being reflected, this form of energy is vital to life on Earth.Key facts
- Light is an energy that surrounds us, essential for our vision.
- Only a fraction of the electromagnetic spectrum is visible to humans.
- We mostly see sunlight reflected off objects and surfaces.
- Luminance depends on how far light has traveled from the source.
Transcript
Everything that is visible to us is emitting or reflecting light.
The Sun shining in the sky or street lamps glowing in the darkness.
Or light being reflected from trees, buildings, people, animals.
It's a form of energy that surrounds us.
Visible light makes up only a small part of the electromagnetic …
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