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HYPOTHESIS I hypothesize that all of the materials listed in the previous slide will decrease WiFi signal strengths, but the glass will have the least effect. Glass will have the least effect on the WiFi signal because it allows the low frequency light to pass through. I think that the metal door will have the greatest effect on the signal because it does not let as much light energy through. What materials reflect signals? What materials absorb signals?
Wireless LAN communications typically are based on radio frequency signals that require a clear and unobstructed transmission path. The following are some factors that cause interference: Physical objects: Trees, masonry, buildings, and other physical structures are some of the most common sources of interference. The density of the materials used in a buildingâs construction determines the number of walls the RF signal can pass through and still maintain adequate coverage.