100 Inventors Who Made History

Page 20

e l c y Bic The two-wheeled way to get people MOVING

Bicycles started off without pedals, then got too big, but developed into the perfect way to travel.

The rider sat high up over the large front wheel.

Did y

Getting o ou know? was diffic n a high-wheele be hazar ult, stopping cou r do ld in the ro us, and a pothole ad often meant going he the hand adfirst over lebars. O uch!

Velocipedes The world’s first bicycle was invented in 1818. Known as a velocipede, the wooden, iron-wheeled machine had a brake but no pedals— it had to be pushed along by the rider’s feet. The machine was popular, but only for a few months.

Pedal power The first successful pedaldriven bicycle was invented by Frenchman Pierre Lallement around 1864. People pedaled around quickly, but very uncomfortably. The bicycles became known as boneshakers because their heavy iron frames and iron-rimmed wheels shook over every bump and hole in the road—and back then there were a lot of BUMPs aNd Holes!

High-wheelers were also called penny-farthings, after two coins of different sizes.

It paved the way for... German engineer Gottlieb Daimler designed the first two-wheeleD motorcycle in 1885, in order to test out a new engine.

18

bmX, short for bicycle motocross, began in the 1970s as a pedalpower version of off-roaD motorcyclinG.


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Acknowledgments

10min
page 130

Index

2min
page 129

Glossary

3min
page 128

Fantastic future

5min
pages 126-127

Total turkeys

5min
pages 124-125

Micro machines

2min
pages 122-123

Bionic body parts

2min
pages 120-121

Vaccination

2min
pages 118-119

Defibrillator

0
page 117

Aspirin

1min
page 116

Diagnostic devices

2min
pages 114-115

Laser

0
page 113

Microscope

1min
page 112

Antibiotics

2min
pages 110-111

Antiseptics

1min
page 109

Chocolate

2min
pages 104-107

Anesthetics

1min
page 108

Fireworks

2min
pages 102-103

Movies

2min
pages 100-101

Personal stereo

1min
page 99

Musical instruments

2min
pages 96-97

Video games

1min
page 98

Sports shoes

1min
page 95

Desk buddies

1min
pages 92-93

Blue jeans

1min
page 94

Robot

2min
pages 90-91

Material world

2min
pages 88-89

Dynamite

1min
page 87

Crane

1min
page 86

Plow

2min
pages 84-85

Keeping it together

2min
pages 78-81

Battery

2min
pages 76-77

Bar code

1min
page 83

Plastic

2min
pages 74-75

Money

1min
page 82

Refrigerator

2min
pages 72-73

Home helpers

1min
pages 70-71

Light bulb

2min
pages 68-69

Internet

1min
page 60

Pendulum clock

2min
pages 66-67

World Wide Web

3min
pages 61-63

Telescope

2min
pages 58-59

Flush toilet

2min
pages 64-65

Satellite

2min
pages 56-57

Computer

2min
pages 54-55

Microprocessor

1min
page 53

Braille

1min
page 41

Transistor

1min
page 52

Radio

2min
pages 46-47

Picture this

2min
pages 48-49

Television

2min
pages 50-51

Phonograph

2min
pages 42-43

Telephone

2min
pages 44-45

Telegraph

1min
page 40

Rocket

2min
pages 30-31

Printing press

2min
pages 38-39

Nuclear energy

2min
pages 32-35

Helicopter

2min
pages 28-29

Paper

2min
pages 36-37

Airplane

2min
pages 26-27

Car

2min
pages 24-25

Bicycle

2min
pages 20-21

Navigational novelties

2min
pages 14-15

Steam engine

1min
page 16

Electric motor

2min
pages 18-19

Caravel

1min
page 12

Submarine

1min
page 13

The wheel

2min
pages 10-11

Steam locomotive

1min
page 17
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