Why is light important? -- What is light? -- What are the primary colors of light? -- How does solar energy work? -- How fast does light travel? -- What other forms of light are in the electromagnetic spectrum? -- What is infrared light? -- Why do some objects cast shadows, while others do not? -- What is absorption, reflection, and transmission? -- What gives objects their colors? -- How do fibre optics work? -- What is refraction? -- What do lenses do? -- What are lasers? -- Is light a particle or wave? -- How do we see light? -- What part of the eye sees color? -- How do our eyes adjust to light? -- What are optical illusions? -- How can we fix eye problems? -- What are some bright careers? -- What are your answers? -- Fast facts.