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She is a인데ugh
Before we talk about Promi
one of the things to do is we reach out to a bunch ofmetaphysics
Let's start by talking about succulent types
I've read the post on a magnetized resonator
Pacific's movies about getting thisness
with a very high quality resonator doこれで
and then I started showing you an experiment
that just showed that one hand couple,
and I had a magnet that I would have on the oscillator,
two signals thinned,
and now we're sort of in the middle of that experiment.
Just to remind you, this was the geometry
of the re-router, and that's how my magnet had
a tentacle we were over.
This is our interaction with the Hamiltonian,
and now we discussed the fact that one can scan,
a magnetic tip, and measure the DC magnetic field
emanating from this tip,
and then the question is if now one wants to couple it
to the motion of the resonator,
one wants to be sent to the AC field,
and how is one sent to the AC field?
Trying from the NMR and ESR developments,
one can use the simplest type of dynamic
coupling sequences on echo, just to try to represent it here.
And so here the idea is that as the cantilever oscillates,
the magnetic field at the end of the center oscillates
in time, and in order not to sort of average out
the AC magnetic field to zero,
one can sort of keep flipping your frame of reference
almost every time the magnetic field flips.
So it's almost like you're, say, watching the ball
bounce up and down, it goes up and down,
but if every time it starts turning over,
you can turn it over and go ahead,
it always looks like it's sort of moving up, right?
And so there's a flaw to that analogy
which I thought was important last night.
The flaw is that the balls are making that motion
in that analogy that I made.
In this case, what's happening is that the end center
is acquiring phase every time the magnetic field,
say, oscillates up, the magnetic field acquires positive phase,
and the magnetic field also goes down,
the magnetic field would acquire negative phase
because it keeps flipping, it continues to acquire
Presenters
Prof. Ania Jayich
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01:31:24 Min
Aufnahmedatum
2015-08-21
Hochgeladen am
2017-05-01 14:49:00
Sprache
en-US
Ania Jayich (UC Santa Barbara)