2-4 ┊ 2839 words ┊ ◄))
2-4, 2839 words, 24 minutes audio time.
This book looks at the different places light comes from, including natural and artificial sources. Discover the difference between a light source and a reflective object and how you can tell which is which. Look at our largest and most important light source – the Sun – and what happens when you take sunlight away. Explore light technology by finding out how we use lasers and fiber optics. And much more!
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