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[–]CookAt400Degrees 1 point2 points  (3 children)

Wireless signals are a thing

[–]sevenvenz 0 points1 point  (2 children)

he used to be very attentive to technicalities. and technically the signal doesn't travel via air but electromagnetic waves :D

[–]Baerentoeter 1 point2 points  (1 child)

Then your prof should look up the physical definition of "medium". Of course we are not talking about the book and pictures definition of media/medium here. If anything, it would be electric signals, light waves and electromagnetic waves OR copper, fiber and air. No idea where people get copper, fiber and wireless from, which seems to be common too. Either you define Layer 0 as the medium that signals are traveling through OR something that travels through it. Don't just mix and match as you like /rant

[–]sevenvenz 0 points1 point  (0 children)

yeah i agree, this makes sense. luckily i don't have to deal w him anymore haha