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.
An insatiable reader and writer with a doctorate. At the age of 62, one can retire with social security benefits within the US, and is considered to be the age of a senior citizen by many organizations. However, the federal government has determined one who is 65 years of age or older is senior citizen. Organizations such as AARP and most businesses consider age 55 as senior citizen and you would receive the standard senior discounts. So there are various opinions, but age 55 is about the youngest considered age.