n is for noise

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

0:00Hello, Minerva? Do you read me? Over.

0:04Hello, Minerva. It's difficult to hear you. Over.

0:10[unclear opening audio]

0:38Hello, Minerva. Your signal is unclear. [unclear speech] Over.

0:43I can't quite hear you, Adabot. There's too much noise.

0:47Hello, Minerva.

0:53Come in, Minerva.

0:55I'm sorry, Adabot.

0:57There's too much noise in this signal. I couldn't hear you.

1:00I know. I couldn't hear you either.

1:03Plus, I was going to watch a movie, but it won't play.

1:08Any idea why?

1:09Hmm. Something around here might be creating noise and interfering with the Wi-Fi

1:14signal.

1:15Noise? I don't hear any noise.

1:17Well, Adabot, sometimes there's noise that we can't hear.

1:21It's not audio noise, it's electrical noise.

1:24And it can cause problems for wireless circuits like your laptop's Wi-Fi.

1:28Or even our walkie-talkies.

1:31Noise that you can't hear?

1:34Interesting.

1:35But where could it be coming from?

1:37Lots of things can create electrical noise.

1:40But the most common are devices with motors in them.

1:42Like, say, this fan.

1:54weird the video still isn't loading noise could also

2:00come from devices they

2:01use a lot of power or send out radio waves

2:04or microwaves

2:10so I just hear the

2:11microwave oven. Oh good, my popcorn's done.

2:21And look, now that the microwave's stopped, the video's loading just fine.

2:25Excellent, we are now noise free. But why does electrical noise cause problems

2:31like that?

2:32Too much electrical noise can confuse or overwhelm a circuit. Engineers often have

2:37to work on

2:37reducing electrical noise in their circuitry because less electrical noise

2:41makes a circuit work better. Oh, just like how it's hard for a person to do work

2:47when there's lots of audio noise around. Exactly. Okay, now that the Wi-Fi is

2:53working, let's try the walkie-talkies again. Okay, let's do it.

3:04hello Minerva do you read me over loud and clear so what was it you wanted to

3:10ask me over oh right would you like to come over here and watch a movie with

3:16me over

3:21hello Minerva