There's a hackneyed scientific description of what it means to touch things: your arse never actually "touches" a chair when you sit down, so it goes, but is instead repelled because of electrons that come up against each other. But is that really the case?
When You Sit Down, Does Your Bum Actually Touch The Chair?
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Moving over to the NBN will soon (hopefully) be an easier and more transparent process, thanks to new rules for telecommunications companies released today by the ACMA.
Our limited human eyesight can really constrain our understanding of the universe. We can see only a thin swath of light's wavelengths, those waves with peaks 390 to 700 nanometres from crest to crest. This means we miss any light-emitting details coming from other wavelengths, such as from radio and microwave light, as well as infrared, ultraviolet and X-ray.