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Why magnetic field sensors can be anywhere
Why magnetic field sensors can be anywhere
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0:00
I guess my question then is like, I'm
0:02
I'm looking at you with my eyes, right?
0:03
I'm I'm listening to you with my ears.
0:07
Yeah. What are birds sensing magnetism
0:10
[music] with?
0:11
>> Great. Also, I love the way that you're
0:13
asking these questions with a slightly
0:14
confused tone. That is the right That is
0:16
the right tone. Just to just to be
0:18
clear.
0:19
>> I have no idea how to even like wrap my
0:21
I'm I'm going to let you have the
0:22
magnetic field thing without asking like
0:24
15 more questions on it. Yes. But yeah,
0:27
I I
0:28
What is in the bird that is getting them
0:31
this information?
0:33
>> The short answer is we don't know.
0:36
>> Perfect.
0:37
>> And [laughter]
0:37
that's kind of astonishing. Just take
0:40
vision. My eyes see. I can tell you
0:43
exactly which molecules inside my eye
0:45
are responsible for reacting to light
0:48
and transforming that into an electrical
0:51
signal that goes to my brain. That's all
0:53
really worked out.
0:55
>> Right.
0:55
>> We don't have that for magnetoreception.
0:58
And there are many reasons for that. One
1:00
of the reasons is that with light,
1:04
the stuff that we see, we know that
1:06
light is [music] blocked by living
1:08
matter. So any organ that detects light
1:10
should be on the surface of the body or,
1:14
you know, connected exposed to it by
1:16
some kind of hole. The problem is that
1:18
magnetic field permeates living matter.
1:22
>> Right.
1:22
>> So they just go through my body and
1:24
they're not impeded by skin or bone or
1:27
anything like that. And so a sensor that
1:30
detects a magnetic field could be
1:32
absolutely anywhere.
1:34
>> [music]
