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What is Wi-Fi?
This video outlines some of the physics behind Wi-Fi, its position in the electromagnetic spectrum, factors that affect Wi-Fi signal strength and how it compares to cellular.
It finishes with some tips on achieving good Wi-Fi connectivity around the home.
Suggested age range: 14+
Questions and answers
If you've got any questions about this video, please email stemexpert@bt.com and we'll answer them here...
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