optics

"One day, down by the pond, Simon meets another dog just like him. And that dog has a bone just like his, only better! How will Simon ever get him to trade, when the other pup knows all the same tricks . . .?"--Provided by publisher.

Optical illusions happen when we perceive something that?s not there or that appears to differ from reality. Scientists divide them into three different categories: optical, perceptual, and cognitive. Readers will be delighted to learn how all kinds of optical illusions work and how they can amaze their friends with the experiments in this entertaining volume. They?ll learn how to make a sequence of drawings seem to come to life, how to make a drawing appear 3D, how to draw the ?impossible? Penrose triangle, and much, much more. All activities and experiments are explained step by step through comprehensible and accessible text.

"The image is clear. Or is it? Optical illusions are tricks that our eyes and brain play on us to make us see things differently--like an image that shows two different things, depending on how you look at it. Explore ambiguous images and learn the science behind what makes them work. Then, take a turn making your own optical illusion. Get ready to be eye-mazed!"--Provided by publisher.

"This low-level book describes what light is and how objects can only be seen with light shining on them or from them. Simple explanations describe which materials light can shine through, what causes shadows, and what happens when you shine light on a mirror"--Provided by publisher.

Profiles the life and work of a devout Muslim who was the first to hypothesize that vision occurs when light beams travel through the lens of a human eye.

Provides answers to questions about light, covering how it is used as energy, how fast it travels, lasers, shadows, fiber optics, and more. Includes audio, videos, activities, weblinks, slideshows, transparencies, maps, quizzes, and supplementary resources.

Early fluent readers will explore the science behind rainbows.

Conduct your own experiments to discover more about the properties of light and how it works.

"Red Kangaroo sees a rainbow across the sky and wants to know: where does it come from? Dr. Chris shows how one rainbow is formed with only two ingredients and three simple steps, giving Red Kangaroo and readers the perfect introduction to optical physics"--Provided by publisher.

We see a rainbow when the Sun shines on rain drops in the sky. When you see a rainbow, the Sun is behind you. These interesting facts about this topic can be discovered in Rainbows.