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DK Science & Technology: Computers

WHAT IS MEMORY? WHAT IS A MICROPROCESSOR? HOW IS VIRTUAL REALITY CREATED? FIND OUT MOREAn electronic machine that uses binary code to store and process data is a computer. Binary code can represent…

DK Science & Technology: Construction

WHAT DOES AN ARCHITECT DO? HOW ARE BUILDING MATERIALS CHOSEN? HOW IS A ROAD BUILT? MODULAR CONSTRUCTIONENGINEERINGFIND OUT MOREFrom houses and skyscrapers to bridges and highways, our environment…

DK Science & Technology: Electricity Supply

HOW ARE MOST GENERATORS POWERED? WHAT IS THE POWER GRID? WHAT IS ALTERNATING CURRENT? POWER GRID POWER STATIONSFIND OUT MOREElectricity has revolutionized the way we use energy. It can be generated…

DK Science & Technology: Electricity

WHAT IS ELECTRICITY? HOW MANY FORMS OF ELECTRICITY ARE THERE? HOW DO MATERIALS BECOME CHARGED? ELECTROSTATIC INDUCTIONFIND OUT MOREA lightning strike demonstrates the incredible energy of…

DK Science & Technology: Electromagnetism

HOW DOES ELECTRICITY CREATE MAGNETISM? HOW DOES MAGNETISM PRODUCE ELECTRICITY? WHAT DO GENERATORS DO? ELECTRIC MOTORSFIND OUT MOREAn electric current produces magnetism, and a magnet can produce an…

DK Science & Technology: Electronics

WHAT IS AN ELECTRIC SIGNAL? WHAT ARE ELECTRONIC COMPONENTS? WHAT IS A TRANSISTOR? SEMICONDUCTORSFIND OUT MOREElectronic circuits operate nearly every modern machine—microwave ovens, cars, and…

DK Science & Technology: Elements

HOW MANY ELEMENTS ARE THERE? WHICH ARE THE MOST COMMON ELEMENTS? METALSPERIODIC TABLEFIND OUT MOREA substance made up of one kind of atom is an element. Gold is an element because it only contains…

DK Science & Technology: Energy

WHAT FORMS CAN ENERGY TAKE? HOW DOES ENERGY CHANGE FORM? DOES ENERGY GET USED UP? KINETIC JOULES FIND OUT MORE Without energy, the world would be lifeless, dark, and still. When…

DK Science & Technology: Engines

WHAT IS A HEAT ENGINE? WHAT IS AN INTERNAL COMBUSTION ENGINE? HOW DOES A STEAM ENGINE WORK? HOW DOES A JET ENGINE WORK? GASOLINE ENGINEBIOGRAPHY: FRANK WHITTLE English, 1907-1996 TURBINESFUEL…

DK Science & Technology: Forces

WHAT CAN FORCES DO? HOW CAN YOU MEASURE A FORCE? WHAT ARE BALANCED FORCES? GRAVITYFIND OUT MOREWhen you strike a ball with a bat, stretch a rubber band, or lift a suitcase, you are applying a force.…