There are currently no long-term studies concerning these effects. Other influences of radiation, such as the possible damage to a cell genome or similar matters, are not considered. Consequently, the limiting emission values for smartphones are only based on the thermal effect of electromagnetic radiation. The absorption of electromagnetic energy always results in the heating of a body. It is a measure for the absorption of electromagnetic fields in a body or material. The SAR value (specific absorption rate) is used as the basis for defining limiting emission values in this area. Measures to protect the population from health hazards due to electric and magnetic fields from low-frequency and DC systems are set in the 26th Ordinance on the Implementation of the Federal Emissions Control Act (26th BImSchV) Limiting emission values. Entire cities can be connected by WiFi today. If special directional antennas are used, the range can be extended to several kilometers. The ranges of the WiFi devices reach from 25 m (in buildings) up to 150 m (outdoors). Directed radiating antennas may be used if approved radiation powers are respected.” The maximum radiated power levels are based on an imaginary standard antenna that radiates in all directions. Frequencies above 5.25 GHz may be used only with automatic power control otherwise a 50% lower maximum level applies
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |