Tech Media News
Here is a Feed Aggregator setup by delabs for easy access to all updates of delabs and dapj. It will also include some feeds of interest to the EE community.
Vintage Doorbell
Doorbell or Calling Bell
This is an example of Electromagnetism. Even Electromagnetic Relays and Power Contacters work on the same principle. Relays and Contacters.
Trillium
Trillium erectum is a perennial, herbaceous, flowering plant that persists by means of an underground rhizome.