One way to categorize waves is to say that there are longitudinal and transverse waves. In a transverse wave, particles of the medium are displaced in a direction perpendicular to the direction of energy transport. In a longitudinal wave, particles of the medium are displaced in a direction parallel to energy transport.
Seven plans allowed normal retirement within these ages. Six of them required at least 30 years of service for normal retirement. Only two of the plans continue to allow normal retirement within these ages. Both now require a minimum age of 57 and at least 30 years of service. For most plans the minimum age requirement increased to the range of age 60 to age 62. Age 60.
FERS MRA (Minimum Retirement Age) The FERS MRA (Minimum Retirement Age) is the earliest age in which you can retire without an age reduction penalty if you have at least 30 years of service. The MRA is determined by your year of birth as follows: Related Articles & Resources.