The full range of wavelengths for light is called the electromagnetic spectrum.. The image and table below show which wavelength ranges in the electromagnetic spectrum correspond to which types of light. Constants. 1  Home. 2  Physics Tools. 3  Contact Us. 4  Forums.
Social Security benefits account for 50 percent or more of retirement income for three out of five beneficiaries receiving Social Security benefits who are age 65 or older. Nearly one out of four received all of their income from Social Security in 2012.
The average monthly Social Security retirement benefit for January 2016 is $1,341. The amount changes monthly. When youâre ready to apply for retirement benefits, use our online retirement application, the quickest, easiest, and most convenient way to apply. More Information. Social Security Basic Facts.