Two emerging wireless technologies are under investigation for different applications.
• Security body scanners operate at 0.50THz.
• Fifth-generation (5G) millimeter-wave cellular networks operate at 28GHz.
(a) For each technology, identify the corresponding region of the electromagnetic spectrum.
(b) Order the two wavelengths associated with these frequencies from longest to shortest.
(c) Explain why radiation in the first technology is able to penetrate clothing yet generally poses minimal ionization risk to human tissue.
(d) Explain why the second technology can support higher data rates than conventional long-range cellular frequencies but suffers from limited range and increased susceptibility to blockage.