Science > Physics > Quantum Gravity 230.5: Negative Absolute Resistance
| Topic: |
Science > Physics |
| User: |
"OsherD" |
| Date: |
02 Feb 2008 12:28:19 PM |
| Object: |
Quantum Gravity 230.5: Negative Absolute Resistance |
From Osher Doctorow
J. Nagel, D. Speer, T. Gaber, A. Sterck, R. Einshort, P. Reimann, K.
Ilin, M. Siegel, D. Koelle, R. Kleiner, all of U. Tubingen Germany
except for Siegel and Koelle and Kleiner at U. Bielefeld Germany and
Ilin and Siegel at U. Karlsruhe Germany, in "Observation of negative
abolute resistance in a Josephson junction," arXiv: 0801.4370 v1
[nlin.CD] 28 Jan 2008, 4 pages (2 column pages), find and describe
Negative Absolute Resistance (NAR) in a Josephson Junction, which is
"seemingly" in conflict with Newton's Laws and thermodynamic
principles. They end with mention of a possible electronic device to
easily go by "tuning" from positive to negative resistance or vice
versa.
The NAR occurs for example in some nonlinear systems driven far from
equilibrium and in the very simple case of a single Brownian Motion
particle dynamics in 1 dimension (not the only case discussed) there
are two mechanisms including a purely noise induced effect and
transient chaos.
It should be emphasized that NAR involves motion against the direction
(opposite to the arrow) of the applied static force.
Osher Doctorow
.
|
|
| User: "OsherD" |
|
| Title: Re: Quantum Gravity 230.5: Negative Absolute Resistance |
02 Feb 2008 12:33:34 PM |
|
|
From Osher Doctorow
I meant to type Eichhorn, not Einshorn or whatever it was. Not all
of us 69 year olds have the advantages of perfect vision of the Young
Lions (more precisely, the Young Lamb-Lions), for which I can refer
readers to one Beethoven NOT on sci.physics.research.
Osher
.
|
|
|
| User: "Rock Brentwood" |
|
| Title: Re: Quantum Gravity 230.5: Negative Absolute Resistance |
03 Feb 2008 04:28:13 PM |
|
|
On Feb 2, 12:33=A0pm, OsherD <mdocto...@ca.rr.com> wrote:
I meant to type Eichhorn, not Einshorn or whatever it was. =A0 Not all
of us 69 year olds have the advantages of perfect vision of the Young
Lions (more precisely, the Young Lamb-Lions), for which I can refer
readers to one Beethoven NOT on sci.physics.research.
I had a friend who, when I was in my 20's, was starting to hit 40 and
told me that the vision starts to go by 40.
Well, this is what happened since I've turned 40: I'm suddenly able to
see at smaller and smaller scales (the ability has always been there,
but not like this). I'm able to control my lens and focal point to the
point of reaching 20/13. I can see the individual nerve fibers'
activations (always could, but never this prominently), with a
resulting resolution down to 15 arc seconds.
I'm printing out entire books' worth of material on single sheets,
going at 1/4 scale. At 1/4 scale, I can make out the hook at the
bottom of the comma in the (further-)reduced-size footnote -- clearly.
I was showing this to some younger acquaintances, "can you make this
out?", "Yes, barely.".
Then came the boom: I asked, "can you make out the OTHER printing on
the sheet?"
"What other printing?!"
"The tiny one that says Kaukauna all over the damned place. It fits
about 2-3 inside the line-width of the footnotes of the 1/4 size-
reduced printout".
Until a few week's ago, I never knew that sheets of paper have all
this printing all over the damned place on them. Now, I'm able to see
it. It's not too far over the wavelength of light.
The paper money does too. But that's well-known.
So, what was that the friend was saying about losing vision at 40? It
seems to be going to opposite way -- enhancing to beyond human
capability.
.
|
|
|
| User: "OsherD" |
|
| Title: Re: Quantum Gravity 230.5: Negative Absolute Resistance |
03 Feb 2008 04:40:38 PM |
|
|
On Feb 3, 2:28=A0pm, Rock Brentwood <markw...@yahoo.com> wrote:
I had a friend who, when I was in my 20's, was starting to hit 40 and
told me that the vision starts to go by 40.
Well, this is what happened since I've turned 40: I'm suddenly able to
see at smaller and smaller scales (the ability has always been there,
but not like this). I'm able to control my lens and focal point to the
point of reaching 20/13. I can see the individual nerve fibers'
activations (always could, but never this prominently), with a
resulting resolution down to 15 arc seconds.
[Next Reply by me (Osher Doctorow): ]
Something "in between" happened to me. I can see at very small scales
(probably not as small as yours) at very small distance, but unless I
actually am on top of the computer terminal/monitor, that doesn't
happen at comfortable seating distance from the monitor. I also can
see better at large distances.
Great Scott! We may be on to something. Quick Dr. Watson, give me
my cape, and I'm off :>)
Osher
.
|
|
|
|
|
|
| User: "" |
|
| Title: Re: Quantum Gravity 230.5: Negative Absolute Resistance |
02 Feb 2008 10:36:18 PM |
|
|
On Feb 2, 1:28 pm, OsherD <mdocto...@ca.rr.com> wrote:
OK, teacher at heart like I am, here is a simple explanation of how
tunnel diodes and most other negative resistance devices function per
Google.
"Under normal forward bias operation, as voltage begins to increase,
electrons at first tunnel through the very narrow p-n junction barrier
because filled electron states in the conduction band on the n-side
become aligned with empty valence band hole states on the p-side of
the pn junction. As voltage increases further these states become more
misaligned and the current drops -- this is called negative resistance,
because current decreases with increasing voltage. As voltage
increases yet further, the diode begins to operate as a normal diode,
where electrons travel by conduction across the pn junction, and no
longer by tunneling through the pn junction barrier. Thus the most
important operating region for a tunnel diode is the negative
resistance region."
Almost as a footnote:
"These diodes have a heavily doped p-n junction only some 10 nm (100
=C5) wide. The heavy doping results in a broken bandgap, where
conduction band electron states on the n-side are more or less aligned
with valence band hole states on the p-side."
Hope this helps.
Harry C.
p.s., I'm older than you, but do remember things from back when I was
employed as a lowly coop student assigned to fabricate negative
resistance devices at RCA Laboratories in Princeton, NJ during the
1950s. The related theory is well covered in William Shockley's book:
"Electrons and Holes in Semiconductors".
Harry C.
.
|
|
|
|
| User: "" |
|
| Title: Re: Quantum Gravity 230.5: Negative Absolute Resistance |
02 Feb 2008 10:16:55 PM |
|
|
On Feb 2, 1:28=A0pm, OsherD <mdocto...@ca.rr.com> wrote:
From Osher Doctorow
J. Nagel, D. Speer, T. Gaber, A. Sterck, R. Einshort, P. Reimann, K.
Ilin, M. Siegel, D. Koelle, R. Kleiner, all of U. Tubingen Germany
except for Siegel and Koelle and Kleiner at U. Bielefeld Germany and
Ilin and Siegel at U. Karlsruhe Germany, in "Observation of negative
abolute resistance in a Josephson junction," arXiv: 0801.4370 v1
[nlin.CD] 28 Jan 2008, 4 pages (2 column pages), find and describe
Negative Absolute Resistance (NAR) in a Josephson Junction, which is
"seemingly" in conflict with Newton's Laws and thermodynamic
principles. =A0They end with mention of a possible electronic device to
easily go by "tuning" from positive to negative resistance or vice
versa.
The NAR occurs for example in some nonlinear systems driven far from
equilibrium and in the very simple case of a single Brownian Motion
particle dynamics in 1 dimension (not the only case discussed) there
are two mechanisms including a purely noise induced effect and
transient chaos.
It should be emphasized that NAR involves motion against the direction
(opposite to the arrow) of the applied static force.
Osher Doctorow
Osher, if negative resistance remains a concept difficult for you to
grasp, Google "Tunnel Diode". This a a negative resistance device ( a
close relative of the Josephson Junction) that has been around since
the late 1950s, and one that presents no conceptual difficulties at
all with respect to how it functions.
Our of curiosity, what possible connection is there between negative
resistance and Newton's Laws? I can see some remote connection with
Ohm's Law, but Newton?
Harry C.
.
|
|
|
| User: "Jessie" |
|
| Title: Re: Quantum Gravity 230.5: Negative Absolute Resistance |
03 Feb 2008 12:29:24 AM |
|
|
<hhc314@yahoo.com> wrote in message
news:ce6b3ac8-aa02-4ad2-999d-75aa79b8f2bb@v4g2000hsf.googlegroups.com...
On Feb 2, 1:28 pm, OsherD <mdocto...@ca.rr.com> wrote:
From Osher Doctorow
J. Nagel, D. Speer, T. Gaber, A. Sterck, R. Einshort, P. Reimann, K.
Ilin, M. Siegel, D. Koelle, R. Kleiner, all of U. Tubingen Germany
except for Siegel and Koelle and Kleiner at U. Bielefeld Germany and
Ilin and Siegel at U. Karlsruhe Germany, in "Observation of negative
abolute resistance in a Josephson junction," arXiv: 0801.4370 v1
[nlin.CD] 28 Jan 2008, 4 pages (2 column pages), find and describe
Negative Absolute Resistance (NAR) in a Josephson Junction, which is
"seemingly" in conflict with Newton's Laws and thermodynamic
principles. They end with mention of a possible electronic device to
easily go by "tuning" from positive to negative resistance or vice
versa.
The NAR occurs for example in some nonlinear systems driven far from
equilibrium and in the very simple case of a single Brownian Motion
particle dynamics in 1 dimension (not the only case discussed) there
are two mechanisms including a purely noise induced effect and
transient chaos.
It should be emphasized that NAR involves motion against the direction
(opposite to the arrow) of the applied static force.
Osher Doctorow
Osher, if negative resistance remains a concept difficult for you to
grasp, Google "Tunnel Diode". This a a negative resistance device ( a
close relative of the Josephson Junction) that has been around since
the late 1950s, and one that presents no conceptual difficulties at
all with respect to how it functions.
Our of curiosity, what possible connection is there between negative
resistance and Newton's Laws? I can see some remote connection with
Ohm's Law, but Newton?
Harry C.
the diode still generates heat in the negitve resistance region.
It is just the slope of the plot of V vs I of the device.
Has nothing at all to do with Newton.
kOsher always mixes everything up into his PI causal banana boat sailing
down the ROS.
(note for the more educated readers, ROS = sci.physics, perhaps San Paulo
too)
.
|
|
|
| User: "OsherD" |
|
| Title: Re: Quantum Gravity 230.5: Negative Absolute Resistance |
03 Feb 2008 01:35:06 AM |
|
|
From Osher Doctorow
Jessie throws in the MoveOn.Org type initial comment (always good for
the primacy effect in psychology, though the recency effect is also
important - see these concepts under their keywords online) "if ___ is
difficult for you to understand." I don't talk to a dog this way,
much less a human being, but there has always been a certain
similarity between elitists, propagandists, and dogs, with the
advantage toward the dogs.
As for Harry C., the "straight man" in this charade, perhaps Uncle Al
will take him under his "wing" :>)
Osher
.
|
|
|
|
|
|
|
Related Articles |
|
|
