| Date | 1890 |
| Author | Abbe |
| Contribution | Reported technique for the use of fluorite in microscope lenses. |
| Reference | Bradbury |
| Notes | The optical properties of this natural crystalline material made it particularly useful in the construction of apochromatic objectives. Abbe had been developing this approach since 1881. Fluorite is commonly used to make objectives that are not quite apochromatic, but cheaper than apochromatic models. |
| Category | Microscopy |
| Pathogen Class | General |
Copyright © 2007- William C. Campbell. All rights reserved.