Difference between revisions of "1907"
Jump to navigation
Jump to search
(added events, navigation) |
(→Events) |
||
| Line 1: | Line 1: | ||
==Events== | ==Events== | ||
| − | + | * '''Unknown Date''' – [[wikipedia:Lee de Forest|Lee de Forest]] invents the triode thermionic amplifier, which starts the development of electronics as a practical technology. | |
| − | |||
| − | * [[wikipedia:Bertram Boltwood|Bertram Boltwood]] proposes that the amount of lead in uranium and thorium ores might be used to determine the [[Earth]]'s age. | + | * '''Unknown Date''' – [[wikipedia:Bertram Boltwood|Bertram Boltwood]] proposes that the amount of lead in uranium and thorium ores might be used to determine the [[Earth]]'s age. |
Latest revision as of 18:46, 21 October 2022
Events
- Unknown Date – Lee de Forest invents the triode thermionic amplifier, which starts the development of electronics as a practical technology.
- Unknown Date – Bertram Boltwood proposes that the amount of lead in uranium and thorium ores might be used to determine the Earth's age.
| Timeline | ||
|---|---|---|
