- McDonald Bridge Wildlife Area Unit (wdfw.wa.gov)
Hunting for upland birds, turkeys, waterfowl and deer is popular on the McDonald Bridge Unit, and when steelhead are migrating, access to a total of two miles of river frontage provides fishing opportunities. Cottonwood, willow, alder and red-osier dogwood are the dominant woody species with reed canary grass being the primary understory species; one site is being restored to native grass cover and another is actively farmed under an agricultural lease.
- Stellar classification (Wikipedia)
In astronomy, stellar classification is the classification of stars based on their spectral characteristics. Electromagnetic radiation from the star is analyzed by splitting it with a prism or diffraction grating into a spectrum exhibiting the rainbow of colors interspersed with spectral lines. Each line indicates a particular chemical element or molecule, with the line strength indicating the abundance of that element. The strengths of the different spectral lines vary mainly due to the temperature of the photosphere, although in some cases there are true abundance differences. The spectral class of a star is a short code primarily summarizing the ionization state, giving an objective measure of the photosphere’s temperature.