La luz visible: energía esencial para la vida y la visión

The video tutorial explains the nature of visible light as part of the electromagnetic spectrum, its propagation without the need for a medium, and its speed. It discusses the concepts of luminosity and illuminance, and how light waves enable vision by reflecting off surfaces and being interpreted by the brain. The importance of light as a source of energy for life on Earth is also highlighted.

How does the distance to the light source affect the illuminance of an object?

What role does light play in providing energy for life on Earth?