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.
When Social Security began paying benefits in 1940, the average 65-year-old male had a period life expectancy of 11.9 years. By 2013, this figure had increased to 18 years, while the retirement age had increased by one year. This amounts to a 43% increase in the time spent collecting old-age benefits.[144] [145]