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.
Whether your Social Security income is reduced depends on your age. For benefit purposes, the Social Security Administration (SSA) defines the full or normal retirement age (NRA) as between 66 and 67 for people born in 1943 or later.