 Text search
 Related images
 HistoryWorld
 Link
 Map
Click the icons to visit linked content. Hover to see the search terms. |
|  |
| | | | | | | |
|
| 1667 |
| | | The first successful human blood transfusion is achieved in Paris by Jean Baptiste Denis, apparently saving the life of a 15-year-old boy | |
| |
|
| 1672 |
| | | Giovanni Domenico Cassini, working in the Paris royal observatory, calculates the distance from the earth to the sun and is only 7% out | |
| |
|
| 1672 |
| | | Isaac Newton's experiments with the prism demonstrate the link between wavelength and colour in light | |
| |
|
| 1674 |
| | | The Dutch scientist Anton van Leeuwenhoek builds a microscope powerful enough for him to observe and describe the red corpuscles in blood | |
| |
|
| 1676 |
| | | Ole Roemer, a Danish astronomer working with Cassini in Paris, calculates the speed of light with an error of only 25% | |
| |
|
| 1677 |
| | | With his powerful new microscope Leeuwenhoek observes spermatozoa in the semen of a dog | |
| |
|
| 1678 |
| | | Christiaan Huygens expounds the theory that light consists of a vibration forming a ripple of waves | |
| |
|
| 1680 |
| | | A comet intrigues Edmund Halley, who works out that it has been around before | |
| |
|
| 1686 |
| | | English naturalist John Ray begins publication of his Historia Plantarum, classifying some 18,600 plants in 'mutual fertility' species | |
| |
|
| 1687 |
| | | Newton publishes Principia Mathematica, proving gravity to be a constant in all physical systems | |
| |
|
| | | | | |
| |