Notes

At head of cover title: With exciting internet links and CD-Rom! Table of contents includes: How do we see? -- Can our eyes be fooled? -- What is a three-dimensional image? -- How does our brain compare sizes? -- What is colour? -- How are cinema films made? -- How do we judge distances? -- What is a hologram? -- How are special film effects made? -- How do magic tricks work? -- How does light distort shapes? -- How are optical illusions used? -- What is a natural optical illusion? -- What is virtual reality?