- Granite Falls — Thumbnail History (historylink.org)
The City of Granite Falls, located in Snohomish County, is situated in the foothills of the Cascades between two rivers: the Pilchuck and the South Fork Stillaguamish. The town is the gateway to the scenic Mountain Loop Highway…
- Electron hole (Wikipedia)
In physics, chemistry, and electronic engineering, an electron hole (often simply called a hole) is a quasiparticle denoting the lack of an electron at a position where one could exist in an atom or atomic lattice. Since in a normal atom or crystal lattice the negative charge of the electrons is balanced by the positive charge of the atomic nuclei, the absence of an electron leaves a net positive charge at the hole’s location.