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.
Most American workers are entitled to receive a monthly Social Security retirement benefit by age 62. The average monthly Social Security check in 2015 is $1,328. But how does the government figure out how much each worker should receive? The key to calculating someoneâs Social Security benefit is to first figure out their Primary Insurance Amount (PIA). The PIA is the baseline amount for your Social Security benefits. The amount of your benefit depends on many factors, including how long you worked, your income and how old you are when you retire.