We’re flicking through the pages of SOS calendar 2017. Interesting fact from the history of technology for this week:
This is an archive article published 08/21/2017. Some information may no longer be up to date and in line with the current state. Please contact us in case of interest.
/ 1904
Arthur Wehnelt found out that the cathode in discharge tube, made of potassium oxide or coated by potassium oxide, emits negative ions. On the basis of this feature it leads the current in one direction only and can be used as a rectifier tube. Originally, the current was directed mechanically, by commutators.
Arthur Wehnelt found out that the cathode in discharge tube, made of potassium oxide or coated by potassium oxide, emits negative ions. On the basis of this feature it leads the current in one direction only and can be used as a rectifier tube. Originally, the current was directed mechanically, by commutators.
Do not miss these articles
Do you like our articles? Do not miss any of them! You do not have to worry about anything, we will arrange delivery to you.