RT Book, Section
A1 Frank, Arthur L.
A2 Wallace, Robert B.
SR Print(0)
ID 1141970771
T1 Nonionizing Radiation
T2 Maxcy-Rosenau-Last Public Health and Preventive Medicine, 15e
YR 2017
FD 2017
PB McGraw-Hill Medical
PP New York, NY
SN 9780071441988
LK accessbiomedicalscience.mhmedical.com/content.aspx?aid=1141970771
RD 2024/04/25
AB The  term  nonionizing  radiation  refers  to  several  forms  of  electromagnetic  radiation  of  wavelengths  longer  than  those  of  ionizing  radiation.  As  wavelength  lengthens,  the  energy  value  of  electromagnetic  radiation  decreases,  and  all  nonionizing  forms  of  radiation  have  less  energy  than  cosmic,  gamma,  and  x-radiation.  In  order  of  increasing  wavelength,  nonionizing  radiation  includes  ultraviolet  (UV)  radiation,  visible  light,  infrared  radiation,  microwave  radiation,  and  radiofrequency  radiation.  The  latter  two  are  often  treated  as  a  single  category.  The  energy,  frequency,  and  wavelength  range  for  electromagnetic  forces  are  shown  in  Table  36-1.  All  forms  of  electromagnetic  radiation  have  the  same  velocity  of  3  ×  1010  cm/s  in  a  vacuum.