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English
XXI
| Page | |
|---|---|
| Gleanings original: "Nachlese"; refers to supplementary notes or collected additions | 566 |
| Tobias Mayer | 568 |
| Johann Heinrich Lambert | 574 |
| Karl Scherffer | 575 |
| Benjamin Franklin | 579 |
Eighteenth Century 581
Second Epoch.
From Dollond to our own time.
| Achromatism The discovery of lenses that transmit light without separating it into colors, a major breakthrough in telescope making | 581 |
| Joseph Priestley | 588 |
| Paolo Frisi | 589 |
| Georg Simon Klügel | 590 |
| Transition | 592 |
| Westfeld | 593 |
| Guyot | 598 |
| Mauclerc | 600 |
| Marat Jean-Paul Marat, better known as a French Revolutionary, who also wrote extensively on light and optics | 601 |
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