N is for Noise

automatic captions, checked for structure and key terms; corrections welcome

[00:00:00.000] Hello, Minerva? Do you read me? Over.
[00:00:04.380] Hello, Minerva. It's difficult to hear you. Over.
[00:00:10.880] [unclear opening audio]
[00:00:38.940] Hello, Minerva. Your signal is unclear. [unclear speech] Over.
[00:00:43.520] I can't quite hear you, Adabot. There's too much noise.
[00:00:47.580] Hello, Minerva.
[00:00:53.140] Come in, Minerva.
[00:00:55.720] I'm sorry, Adabot.
[00:00:57.380] There's too much noise in this signal. I couldn't hear you.
[00:01:00.200] I know. I couldn't hear you either.
[00:01:03.080] Plus, I was going to watch a movie, but it won't play.
[00:01:08.400] Any idea why?
[00:01:09.940] Hmm. Something around here might be creating noise and interfering with the Wi-Fi
[00:01:14.280] signal.
[00:01:15.040] Noise? I don't hear any noise.
[00:01:17.920] Well, Adabot, sometimes there's noise that we can't hear.
[00:01:21.660] It's not audio noise, it's electrical noise.
[00:01:24.320] And it can cause problems for wireless circuits like your laptop's Wi-Fi.
[00:01:28.320] Or even our walkie-talkies.
[00:01:31.320] Noise that you can't hear?
[00:01:34.100] Interesting.
[00:01:35.160] But where could it be coming from?
[00:01:37.960] Lots of things can create electrical noise.
[00:01:40.260] But the most common are devices with motors in them.
[00:01:42.880] Like, say, this fan.
[00:01:54.640] weird the video still isn't loading noise could also
[00:02:00.560] come from devices they
[00:02:01.740] use a lot of power or send out radio waves
[00:02:04.080] or microwaves
[00:02:10.060] so I just hear the
[00:02:11.220] microwave oven. Oh good, my popcorn's done.
[00:02:21.580] And look, now that the microwave's stopped, the video's loading just fine.
[00:02:25.920] Excellent, we are now noise free. But why does electrical noise cause problems
[00:02:31.580] like that?
[00:02:32.400] Too much electrical noise can confuse or overwhelm a circuit. Engineers often have
[00:02:37.280] to work on
[00:02:37.860] reducing electrical noise in their circuitry because less electrical noise
[00:02:41.560] makes a circuit work better. Oh, just like how it's hard for a person to do work
[00:02:47.100] when there's lots of audio noise around. Exactly. Okay, now that the Wi-Fi is
[00:02:53.300] working, let's try the walkie-talkies again. Okay, let's do it.
[00:03:04.600] hello Minerva do you read me over loud and clear so what was it you wanted to
[00:03:10.240] ask me over oh right would you like to come over here and watch a movie with
[00:03:16.000] me over
[00:03:21.020] hello Minerva