100 Inventors Who Made History

Page 48

Pi

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ere used pinhole cameras w ject for centuries to pro uldn’t images, but they co ay, taking take a picture. tod be easier. snapshots couldn’t

Did you kn

Early daguerre ow? sitters had to otype stay absolutely still for 60 to 90 seconds. No w of them looked onder most so serious!

the FRAME in u o y s ut p t a th n io The invent Daguerreotype

The world’s first photographs were taken by Nicéphore Niépce, but they faded quickly. Fellow Frenchman Louis-Jacques-Mandé Daguerre discovered a way of making a permanent image on a silver-coated copper plate. They didn’t take a long time to make, and the images can still be seen today. People rushed to have their portraits immortalized on daguerreotypes, as they were called, in the mid-1800s. Daguerreotype cameras developed their images on copper plates coated with a thin layer of silver. The entire camera had to be sent to the Kodak factory to obtain the photos.

Film cameras

Photography was a complicated and time-consuming process before American George Eastman invented roll-film cameras. Eastman invented a flexible film to replace the glass plates that were commonly used to capture images, then, with William Walker, a roll holder for the film. His KodaK camera was the first to have a built-in film-roll holder when it went on sale in 1888, making photography a lot simpler.

46


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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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