官方藏书 / Science_-_Chemistry_Biochemistry / The book of wonders

The book of wonders

Science_-_Chemistry_Biochemistry · 54 章

目录

THE BOOK OF WONDERS Chapter 2 Introduction Why Can You Blow Out a Candle?Why Does an Onion Make the Tears Come?A VISIT TO A CARTRIDGE FACTORY Chapter 7 Why Has a Long Coat Buttons on the Back?What Are the Sounds We Hear in a Shell?Where Do the Tears Go?Why Are Bubbles Round?What Makes Freckles Come?Will People All Be Bald Sometime?Why Does Milk Turn Sour?What Makes Some Rugs so Valuable?What Are Ball Bearings?Why Do We Get a Bump Instead of a Dent When We Knock Our Heads?Why Do We Worry?How Many Stars Are There?Why Will Water Run Off a Duck’s Back?Why Do We Have to Die?What Does Horse Power Mean?Why Do We See Stars When Hit On the Eye?Is a Moth Attracted By a Light?How the Light Gets Into the Electric Light Bulb.Who Made the First Umbrella?Why Do We Cook the Things We Eat?What Is an Element?Why Does the Dark Cause Fear?What Makes a Hot Box?How Are Freak Pictures Made?What Is Wild Rubber?Why Are Some Faculties Stronger Than Others?What Is Soap Made Of?Uncle Sam Helped Build the First Telegraph Line.THE STORY IN A RAILWAY LOCOMOTIVE How Did the Name Uncle Sam Originate?The Mill Tries to Catch Up with the Bins.How is the Eraser Put On a Pencil?How Much Cotton Cloth Will a Pound of Cotton Make?Where Does Salt Come From?What Causes Shadows?How Hollow Steel Piles, Compressed and Concrete Are Employed to Make a Foundation What Is the Most Usefully Valuable Metal?Just a Few Figures About Tobacco.Our Fingers.Why Are Some Races White, and Others Black, Yellow and Brown?Where Does Leather Come From?The First Machine for Making Shoes.How Shoes Are Made by Machinery How Is Photo Engraving Done?ACKNOWLEDGMENT INDEX THE FULL PROJECT GUTENBERG™ LICENSE