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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?
This can dramatically affect the radio signals between your router and Wi-Fi device, and can cause slow or intermittent connection problems. Varying signal: In some situations you may find the Wi-Fi signal is better in different parts of the room.he following diagrams will show the effect on the wireless signal to devices using your Wi-Fi network in different situations. Even though the data transmitted over Wi-Fi is digital, the actual signal uses analogue radio waves.