Moire and superconductivity

[George Herold]

On Thursday, August 1, 2019 at 4:51:59 PM UTC-4, Jan Panteltje wrote:

On a sunny day (Thu, 1 Aug 2019 13:12:37 -0700 (PDT)) it happened George
Herold <gherold@teachspin.com> wrote in
a012c0db-24f2-47d0-a324-17b2df62f141@googlegroups.com>:

On Thursday, August 1, 2019 at 3:59:47 PM UTC-4, Jan Panteltje wrote:
On a sunny day (Thu, 1 Aug 2019 12:36:15 -0700 (PDT)) it happened George
Herold <gherold@teachspin.com> wrote in
b6c1ff51-faee-420f-97e3-a3117b1f8947@googlegroups.com>:

On Thursday, August 1, 2019 at 3:19:26 PM UTC-4, Jan Panteltje wrote:
On a sunny day (Thu, 1 Aug 2019 12:05:54 -0700 (PDT)) it happened George
Herold <gherold@teachspin.com> wrote in
729276d5-e186-4e8c-835a-4c5a31ddbfcc@googlegroups.com>:

On Thursday, August 1, 2019 at 12:58:35 PM UTC-4, Jan Panteltje wrote:
Physicists make graphene discovery that could help develop superconductors

https://www.sciencedaily.com/releases/2019/08/190801105030.htm

I love the 'enduring mystery' part. quoting,
"Now, a team has paved the way to solving one of the most enduring mysteries
in materials physics by discovering that in the presence of a moir=C3=A9 pattern
in graphene, electrons organize themselves into stripes, like soldiers
in formation."

Since graphene has only been around for ~10 years, it seems enduring
mysteries don't have to last very long these days.

It is just text,
What fascinates me is the link to 'electron paring'
and super conduction.
THAT mystery has been around a long time.
If it was so one can force electron pairing by making the right moire
pattern by aligning crystal patterns, we will REALLY have something BIG.
Room temperature superconductors?

OK, SC graphene was found in 2018
https://www.nature.com/articles/d41586-018-02773-w

But it's two thin sheets and has to be cooled to 1.7 K.
(a long way from room temp.)

George h.

OK, but if you can create 'electron highways' like that
it unlocks it (the mystery) for any crystal, at any temperature.
And switching from insulator to super conductor by twisting crystal
lattices could make a nice switch to (say control with a piezo).
[ Usenet patent by me ].
OK, I don't know of course.
Here's arxiv of paper.
https://arxiv.org/ftp/arxiv/papers/1904/1904.10153.pdf
Hey your jealous of those guys?
Nah, I did low temperature work at the Uni. PITA... table top stuff
is better.

I just sat down, eat icecream and apple juice..
and had the strangest ideas.
-- Just imagine if superconductivity indeed depends on the exact angle between crystal lattices,
and when temperature gets higher due to motion that angle becomes more 'chaotic' noise basically
WOULD that be an explanation why some combination of materials are better..
THEN I though: What if you could cancel that crystal vibration electrically by some frequency
say having the things in resonance, like a laser beam or sound beam can hold particles.
WOW! could that bring the superconducting temperature point up higher?
And then it would explain why in some superconductors a too high current stops the super conduction...

OK now I will read your paper

It's not my paper... it's your link. I skimmed it and was mostly
confused... there are some I-V curves. (but not understanding the
text, I wasn't sure what I was looking at.)

OK, 32 pages, some a bit over my head, will have to read again.
so could I, by using electric signals, make my little YBCO-123 disk superconducting at room temperature?

LN2 superconductors are cool.. we should certainly work on making
those better.

The secret .. Apple juice, I always liked that.

I like beer too much.
(I drink local swill, Genesee beer, not much...
huh, OK just read the label. 4.5% alc./vol!
I thought it was less than that... at that level why
not Guinness?*

George H.
*well beer farts, I'd have to live by myself.
George H.

 

[George Herold]

On Thursday, August 1, 2019 at 4:56:39 PM UTC-4, John Larkin wrote:

On Thu, 1 Aug 2019 12:29:16 -0700 (PDT), George Herold
gherold@teachspin.com> wrote:

On Thursday, August 1, 2019 at 3:13:40 PM UTC-4, John Larkin wrote:
On Thu, 01 Aug 2019 16:58:23 GMT, Jan Panteltje
pNaOnStPeAlMtje@yahoo.com> wrote:

Physicists make graphene discovery that could help develop superconductors
https://www.sciencedaily.com/releases/2019/08/190801105030.htm

I'm sure that this will have as many amazing applications as
buckyballs and nanobuds and carbon nanotubes.

Does Digikey have the fast nonvolatile nanotube RAMs in stock?
The rate of technological 'progress' does seem to have slowed*.

No, it's faster than ever, but the rate of press releases has grown
exponentially.

There's that, there's also the number of papers that have to come
out of a group of grad students, post docs and profs.
(more of those than ever,
new stuff cut into smaller bits.)

I'm not saying there is no progress. Semiconductors,
man-made materials laid down in patterns we can choose,
that's where I still see lots of progress. Moore's law is
still true. But there's no Moore's law for washing machines
or cars, or houses, those are mostly the same.

I heard they're going to upgrade the hydro-plant at Niagara
Falls. How much better will the new one be?* (In now is one
built in the 60's. Iron and copper spinning around. I know
almost nothing about hydro generation, are the generators
multi phase?)

George H.

*I'd have to define 'better'.

--

John Larkin Highland Technology, Inc
picosecond timing precision measurement

jlarkin att highlandtechnology dott com
http://www.highlandtechnology.com

 

[Rick C]

On Thursday, August 1, 2019 at 8:15:12 PM UTC-4, George Herold wrote:

On Thursday, August 1, 2019 at 4:56:39 PM UTC-4, John Larkin wrote:
On Thu, 1 Aug 2019 12:29:16 -0700 (PDT), George Herold
gherold@teachspin.com> wrote:

On Thursday, August 1, 2019 at 3:13:40 PM UTC-4, John Larkin wrote:
On Thu, 01 Aug 2019 16:58:23 GMT, Jan Panteltje
pNaOnStPeAlMtje@yahoo.com> wrote:

Physicists make graphene discovery that could help develop superconductors
https://www.sciencedaily.com/releases/2019/08/190801105030.htm

I'm sure that this will have as many amazing applications as
buckyballs and nanobuds and carbon nanotubes.

Does Digikey have the fast nonvolatile nanotube RAMs in stock?
The rate of technological 'progress' does seem to have slowed*.

No, it's faster than ever, but the rate of press releases has grown
exponentially.
There's that, there's also the number of papers that have to come
out of a group of grad students, post docs and profs.
(more of those than ever,
new stuff cut into smaller bits.)

I'm not saying there is no progress. Semiconductors,
man-made materials laid down in patterns we can choose,
that's where I still see lots of progress. Moore's law is
still true. But there's no Moore's law for washing machines
or cars, or houses, those are mostly the same.

I heard they're going to upgrade the hydro-plant at Niagara
Falls. How much better will the new one be?* (In now is one
built in the 60's. Iron and copper spinning around. I know
almost nothing about hydro generation, are the generators
multi phase?)

Virtually all high power equipment is three phase. Even minicomputers used three phase power.

--

Rick C.

+- Get 1,000 miles of free Supercharging
+- Tesla referral code - https://ts.la/richard11209

 

[Bill Sloman]

On Friday, August 2, 2019 at 5:36:19 AM UTC+10, George Herold wrote:

On Thursday, August 1, 2019 at 3:19:26 PM UTC-4, Jan Panteltje wrote:
On a sunny day (Thu, 1 Aug 2019 12:05:54 -0700 (PDT)) it happened George
Herold <gherold@teachspin.com> wrote in
729276d5-e186-4e8c-835a-4c5a31ddbfcc@googlegroups.com>:

On Thursday, August 1, 2019 at 12:58:35 PM UTC-4, Jan Panteltje wrote:
Physicists make graphene discovery that could help develop superconductors

https://www.sciencedaily.com/releases/2019/08/190801105030.htm

I love the 'enduring mystery' part. quoting,
"Now, a team has paved the way to solving one of the most enduring mysteries
in materials physics by discovering that in the presence of a moir=C3=A9 pattern
in graphene, electrons organize themselves into stripes, like soldiers
in formation."

Since graphene has only been around for ~10 years, it seems enduring
mysteries don't have to last very long these days.

It is just text,
What fascinates me is the link to 'electron paring'
and super conduction.
THAT mystery has been around a long time.
If it was so one can force electron pairing by making the right moire
pattern by aligning crystal patterns, we will REALLY have something BIG.
Room temperature superconductors?

OK, SC graphene was found in 2018
https://www.nature.com/articles/d41586-018-02773-w

But it's two thin sheets and has to be cooled to 1.7 K.
(a long way from room temp.)

On the other hand, it's different from known forms of superconductivity, and provides more data for theoreticians to work into a more comprehensive theory.

It's definitely useful information, if not perhaps the breakthrough that every university publicity department wants to point to in all of their press releases.

--
Bill Sloman, Sydney

 

[Bill Sloman]

On Friday, August 2, 2019 at 5:34:52 AM UTC+10, Martin Brown wrote:

On 01/08/2019 20:13, John Larkin wrote:
On Thu, 01 Aug 2019 16:58:23 GMT, Jan Panteltje
pNaOnStPeAlMtje@yahoo.com> wrote:

<snip>

Answer turns out to be that after a while with a different technology
they become consumer items in almost everything.

You cannot tell in advance which will be winners and which are dead
ends. My US venture capitalist friends who invested in our start up
(when no-one in the UK would touch us with a barge pole) said their rule
of thumb was 8/10 crash and burn, 1 lingers and 1 goes like a rocket.
The latter pays for all of the others.

Does Digikey have the fast nonvolatile nanotube RAMs in stock?

No but various forms of carbon fibre are being used to strengthen
aeroplane wings and other serious engineering structures.

http://www.materialsforengineering.co.uk/engineering-materials-features/aerospace-industry-moves-to-carbon-fibre-wings/61987/

I suspect graphene will have its day in the sun after a few false dawns.
It is astonishing that it lay undiscovered for so long when all you
needed was a piece of graphite, Sellotape and grim determination.

Having 2-D constrained systems makes the mathematics a lot easier.
It may well provide insights into room temperature super conductors.

A couple of recent papers on high temperature superconductivity in the Proceedings of the (US) National Academy of Science have emphasised that the new materials were found by deliberately looking for crystal structures that would support the necessary electron pairing.

Two loosely coupled layers of graphene might be worth looking at in that kind of study.

<snip>

--
Bill Sloman, Sydney

 

George Herold <gherold@teachspin.com> wrote in
news:729276d5-e186-4e8c-835a-4c5a31ddbfcc@googlegroups.com:

On Thursday, August 1, 2019 at 12:58:35 PM UTC-4, Jan Panteltje
wrote:
Physicists make graphene discovery that could help develop
superconductor
s
https://www.sciencedaily.com/releases/2019/08/190801105030.htm

I love the 'enduring mystery' part. quoting,
"Now, a team has paved the way to solving one of the most enduring
mysteries in materials physics by discovering that in the presence
of a moirĂŠ pattern in graphene, electrons organize themselves
into stripes, like soldiers in formation."

Since graphene has only been around for ~10 years, it seems
enduring mysteries don't have to last very long these days.

George H.

Have you looked at the double dot stuff they have been doing?

Some of the data plots look like fabric.

Google image "quantum double dot".

 

Jan Panteltje <pNaOnStPeAlMtje@yahoo.com> wrote in
news:qhvdvl$3h9$1@dont-email.me:

On a sunny day (Thu, 1 Aug 2019 12:05:54 -0700 (PDT)) it happened
George Herold <gherold@teachspin.com> wrote in
729276d5-e186-4e8c-835a-4c5a31ddbfcc@googlegroups.com>:

On Thursday, August 1, 2019 at 12:58:35 PM UTC-4, Jan Panteltje
wrote:
Physicists make graphene discovery that could help develop
superconductors

https://www.sciencedaily.com/releases/2019/08/190801105030.htm

I love the 'enduring mystery' part. quoting,
"Now, a team has paved the way to solving one of the most enduring
mysteries in materials physics by discovering that in the presence
of a moir=C3=A9 pattern in graphene, electrons organize themselves
into stripes, like soldiers in formation."

Since graphene has only been around for ~10 years, it seems
enduring mysteries don't have to last very long these days.

It is just text,
What fascinates me is the link to 'electron paring'
and super conduction.
THAT mystery has been around a long time.
If it was so one can force electron pairing by making the right
moire pattern by aligning crystal patterns, we will REALLY have
something BIG. Room temperature superconductors?

Google quantum double dot

Not RTS, but they are down at the nanotube scales, so I am sure and
ISTR seeing nanotubes in some of the fab data. There are a bunch of
folks working on it at various labs around the world.

 

Martin Brown <'''newspam'''@nezumi.demon.co.uk> wrote in
news:qhvesj$1dv5$1@gioia.aioe.org:

How many people will be able to afford a 4" synthetic ruby crystal
and a massive capacitor bank flash gun to make it lase?

Heheheh... for a second there (OK maybe a millisecond), I thought
you were describing a giant XC condenser (Interociter part).

 

Rick C <gnuarm.deletethisbit@gmail.com> wrote in news:61d6a7e5-c88a-
4c82-a288-9afb115e0f52@googlegroups.com:

> How many in this group still don't have smart phones?

I have two phones, both smart. One I use for calls, but get spam
calls all the time. The other I only use for weather and data, like
DLing music and movies, which I then move over to my PC. I don't make
calls on it, but it still gets spam calls, just not as many.

My friend SPOKE to his doctor about bladder stuff, and less than a
day later, he starts getting spam on his phone about urologists. Never
looked at a site and never texted anything about it.

This behavior of these spammers should be declared as criminal.

 

Rick C <gnuarm.deletethisbit@gmail.com> wrote in
news:3d07f54c-694e-4810-8ab8-a70d005687f9@googlegroups.com:

Yes, future shock is with us now. At least that what Alexa told
me.

Until I get my Dick Tracy wrist mounted video phone, I am skeptical.

Why the idiots have not moved that way I do not know. Instead
everyone just holds it in their hand.

I guess the DT cartoon guy just didn't have the right vision.

 

Mike Coon <gravity@mjcoon.plus.com> wrote in
news:MPG.37ad5da430fc037a72@news.plus.net:

BTW I thought graphene was only one atom thick, as two-dimensional
as you can get.

Mike.

Graphene is graphene. A graphene 'sheet' or 'film' is the thin
stuff, but there are other applications and groupings of it.

Odd that is forms a matrix several times larger than helium atom
diameters, yet a balloon coated with it will keep Helium from leaking
past.

 

George Herold <gherold@teachspin.com> wrote in news:6dc6adc6-7178-4b95-
bec6-8b6d41b14ab0@googlegroups.com:

The rate of technological 'progress' does seem to have slowed*.
We've picked all the low hanging fruit... even with thousands of
researchers, it's hard to find something new and useful.

We had "future shock" in the '70's.. but today fizzles.

Have you seen the use of organics in things like RNGs?

Purdue is doing some interesting fruit picking.

Even using DNA strands and such.

 

[John Larkin]

On Thu, 1 Aug 2019 17:15:07 -0700 (PDT), George Herold
<gherold@teachspin.com> wrote:

On Thursday, August 1, 2019 at 4:56:39 PM UTC-4, John Larkin wrote:
On Thu, 1 Aug 2019 12:29:16 -0700 (PDT), George Herold
gherold@teachspin.com> wrote:

On Thursday, August 1, 2019 at 3:13:40 PM UTC-4, John Larkin wrote:
On Thu, 01 Aug 2019 16:58:23 GMT, Jan Panteltje
pNaOnStPeAlMtje@yahoo.com> wrote:

Physicists make graphene discovery that could help develop superconductors
https://www.sciencedaily.com/releases/2019/08/190801105030.htm

I'm sure that this will have as many amazing applications as
buckyballs and nanobuds and carbon nanotubes.

Does Digikey have the fast nonvolatile nanotube RAMs in stock?
The rate of technological 'progress' does seem to have slowed*.

No, it's faster than ever, but the rate of press releases has grown
exponentially.
There's that, there's also the number of papers that have to come
out of a group of grad students, post docs and profs.
(more of those than ever,
new stuff cut into smaller bits.)

I'm not saying there is no progress. Semiconductors,
man-made materials laid down in patterns we can choose,
that's where I still see lots of progress. Moore's law is
still true. But there's no Moore's law for washing machines
or cars, or houses, those are mostly the same.

I inherited a wood-handle hammer that must be 60 or so years old.
Works as good as a fancy modern carbon-fiber one. Beds and bathtubs
and scrambled eggs are about the same as they were a century ago.

I heard they're going to upgrade the hydro-plant at Niagara
Falls. How much better will the new one be?* (In now is one
built in the 60's. Iron and copper spinning around. I know
almost nothing about hydro generation, are the generators
multi phase?)

Three phase. That's was Tesla's big concept. Some people wanted Niagra
to generate DC.

Of course, Tesla thought that you needed six wires, two for each
phase, to connect a generator to a motor.


--

John Larkin Highland Technology, Inc

lunatic fringe electronics

 

On Fri, 02 Aug 2019 08:43:55 -0700, John Larkin
<jjlarkin@highlandtechnology.com> wrote:

On Thu, 1 Aug 2019 17:15:07 -0700 (PDT), George Herold
gherold@teachspin.com> wrote:


I heard they're going to upgrade the hydro-plant at Niagara
Falls. How much better will the new one be?* (In now is one
built in the 60's. Iron and copper spinning around. I know
almost nothing about hydro generation, are the generators
multi phase?)

Replacing the blades in a Kaplan turbine with modern shapes increase
output by 2-6 percent.

When there is a big refurbishing project, drag in water channels is
often reduced, possible gear boxes are eliminated and in the end the
output may increase by 20-30 %.

Three phase. That's was Tesla's big concept. Some people wanted Niagra
to generate DC.

Of course, Tesla thought that you needed six wires, two for each
phase, to connect a generator to a motor.

Wasn't Niagara Falls originally two phase (90 degree phase shift) ?
This requires four wires or two thinner phase conductors and nearly
double as thick neutral conductor.

In three phase systems, three thin phase conductors are only needed
but no neutral conductor (delta connection).

 

[John Larkin]

On Fri, 2 Aug 2019 10:17:57 +0000 (UTC),
DecadentLinuxUserNumeroUno@decadence.org wrote:

Rick C <gnuarm.deletethisbit@gmail.com> wrote in news:61d6a7e5-c88a-
4c82-a288-9afb115e0f52@googlegroups.com:

How many in this group still don't have smart phones?

I have two phones, both smart. One I use for calls, but get spam
calls all the time. The other I only use for weather and data, like
DLing music and movies, which I then move over to my PC. I don't make
calls on it, but it still gets spam calls, just not as many.

My friend SPOKE to his doctor about bladder stuff, and less than a
day later, he starts getting spam on his phone about urologists. Never
looked at a site and never texted anything about it.

This behavior of these spammers should be declared as criminal.

I have a flip phone that's just a telephone; no texting, no voice
messaging, nothing. I get maybe one spam phone call a week.

I recharge it maybe every two weeks.


--

John Larkin Highland Technology, Inc
picosecond timing precision measurement

jlarkin att highlandtechnology dott com
http://www.highlandtechnology.com

 

[Rick C]

On Friday, August 2, 2019 at 3:04:38 PM UTC-4, John Larkin wrote:

On Fri, 2 Aug 2019 10:17:57 +0000 (UTC),
DecadentLinuxUserNumeroUno@decadence.org wrote:

Rick C <gnuarm.deletethisbit@gmail.com> wrote in news:61d6a7e5-c88a-
4c82-a288-9afb115e0f52@googlegroups.com:

How many in this group still don't have smart phones?

I have two phones, both smart. One I use for calls, but get spam
calls all the time. The other I only use for weather and data, like
DLing music and movies, which I then move over to my PC. I don't make
calls on it, but it still gets spam calls, just not as many.

My friend SPOKE to his doctor about bladder stuff, and less than a
day later, he starts getting spam on his phone about urologists. Never
looked at a site and never texted anything about it.

This behavior of these spammers should be declared as criminal.

I have a flip phone that's just a telephone; no texting, no voice
messaging, nothing. I get maybe one spam phone call a week.

I recharge it maybe every two weeks.

If you only charge it once in two weeks, you can't be using it much. They can lower current at idle, but they can't reduce the transmit power much.

If you don't use it, why have it? Or are you exaggerating the run time?

--

Rick C.

++ Get 1,000 miles of free Supercharging
++ Tesla referral code - https://ts.la/richard11209

 

[George Herold]

On Friday, August 2, 2019 at 11:44:04 AM UTC-4, John Larkin wrote:

On Thu, 1 Aug 2019 17:15:07 -0700 (PDT), George Herold
gherold@teachspin.com> wrote:

On Thursday, August 1, 2019 at 4:56:39 PM UTC-4, John Larkin wrote:
On Thu, 1 Aug 2019 12:29:16 -0700 (PDT), George Herold
gherold@teachspin.com> wrote:

On Thursday, August 1, 2019 at 3:13:40 PM UTC-4, John Larkin wrote:
On Thu, 01 Aug 2019 16:58:23 GMT, Jan Panteltje
pNaOnStPeAlMtje@yahoo.com> wrote:

Physicists make graphene discovery that could help develop superconductors
https://www.sciencedaily.com/releases/2019/08/190801105030.htm

I'm sure that this will have as many amazing applications as
buckyballs and nanobuds and carbon nanotubes.

Does Digikey have the fast nonvolatile nanotube RAMs in stock?
The rate of technological 'progress' does seem to have slowed*.

No, it's faster than ever, but the rate of press releases has grown
exponentially.
There's that, there's also the number of papers that have to come
out of a group of grad students, post docs and profs.
(more of those than ever,
new stuff cut into smaller bits.)

I'm not saying there is no progress. Semiconductors,
man-made materials laid down in patterns we can choose,
that's where I still see lots of progress. Moore's law is
still true. But there's no Moore's law for washing machines
or cars, or houses, those are mostly the same.

I inherited a wood-handle hammer that must be 60 or so years old.
Works as good as a fancy modern carbon-fiber one. Beds and bathtubs
and scrambled eggs are about the same as they were a century ago.

I think I can make a case that washing machines and coffee makers
are worse than in the near past.

I heard they're going to upgrade the hydro-plant at Niagara
Falls. How much better will the new one be?* (In now is one
built in the 60's. Iron and copper spinning around. I know
almost nothing about hydro generation, are the generators
multi phase?)

Three phase. That's was Tesla's big concept. Some people wanted Niagra
to generate DC.

Three phase is the only induction motor that is easy to understand.
I guess it's mostly the same for a generator. (but backwards..
is there some battery/ power supply to help get it started as a
generator?)

Of course, Tesla thought that you needed six wires, two for each
phase, to connect a generator to a motor.

Well six seems fine by me... if your'e trying something for the
first time it's good to 'cover your ass'.. make sure it works.

As a kid we had HO scale slot cars with DC 'pancake' motors.
They had three windings on the rotor...(with arcy sparky switching,
ozone and light machine oil was the smell of fun. :^)
and permanent magnets, you could see and feel how it worked.

George H.

--

John Larkin Highland Technology, Inc

lunatic fringe electronics

 

[Martin Brown]

On 02/08/2019 20:41, Rick C wrote:

On Friday, August 2, 2019 at 3:04:38 PM UTC-4, John Larkin wrote:
On Fri, 2 Aug 2019 10:17:57 +0000 (UTC),
DecadentLinuxUserNumeroUno@decadence.org wrote:

Rick C <gnuarm.deletethisbit@gmail.com> wrote in news:61d6a7e5-c88a-
4c82-a288-9afb115e0f52@googlegroups.com:

How many in this group still don't have smart phones?

I have two phones, both smart. One I use for calls, but get spam
calls all the time. The other I only use for weather and data, like
DLing music and movies, which I then move over to my PC. I don't make
calls on it, but it still gets spam calls, just not as many.

My friend SPOKE to his doctor about bladder stuff, and less than a
day later, he starts getting spam on his phone about urologists. Never
looked at a site and never texted anything about it.

This behavior of these spammers should be declared as criminal.

I have a flip phone that's just a telephone; no texting, no voice
messaging, nothing. I get maybe one spam phone call a week.

I recharge it maybe every two weeks.

If you only charge it once in two weeks, you can't be using it much. They can lower current at idle, but they can't reduce the transmit power much.

If you don't use it, why have it? Or are you exaggerating the run time?

I believe him. My trusty old Nokia dumb phone would go about two weeks
on a charge. I didn't have it clamped permanently to my head like some
do but it would last that long with reasonable call usage and even
longer in standby mode and/or in cities where the signal was stronger.

When I dropped it in a bucket of water by accident it stopped working
and I got a Moto G3 based on it having the best battery life of any
smart phone available at the time. It would last about 7 days normal use
when new - down to about 3 days now with an elderly battery.

My wife's new iPhone X requires a recharge every single day (as did its
6 series predecessor). Usage profile on both phones broadly similar.

Hers gets a bit more hammer on Google maps and mobile data.

--
Regards,
Martin Brown

 

[Martin Brown]

On 03/08/2019 15:03, Rick C wrote:

On Saturday, August 3, 2019 at 8:11:37 AM UTC-4, Martin Brown wrote:
On 02/08/2019 20:41, Rick C wrote:
On Friday, August 2, 2019 at 3:04:38 PM UTC-4, John Larkin
wrote:
On Fri, 2 Aug 2019 10:17:57 +0000 (UTC),
DecadentLinuxUserNumeroUno@decadence.org wrote:

My wife's new iPhone X requires a recharge every single day (as did
its 6 series predecessor). Usage profile on both phones broadly
similar.

Hers gets a bit more hammer on Google maps and mobile data.

I was looking at new cars and was told they are not pushing the in
car navigators now. They let you tie your cell phone into the
console. I guess they have an app that works with the phone app to
display a map.

I don't know about in the US but in the UK Google maps has real time
traffic info and completely up to date maps. You can tell who is using
it by where they turn off and follow an unofficial diversion.

I wonder what happens when cell coverage is lost? That happens often
where I roam. Not for long times, but more than a minute.

GPS and the map segments already loaded continue to work although
sometimes it can place you in a field parallel to the road for a while
if the satellites don't give a precise enough fix. No mobile signal
zones here are at most a few minutes in a car. The cars DAB radio drops
out a lot more often (it is very badly implemented in the UK).

You sometimes see abrupt changes of speed limit on motorways when going
over or under a road bridge. I have mine set only to reroute if more
than 15 minutes can be saved from the default initial journey plan.

I don't use my phone a lot either. A quick scan of talk times show
they have improved for flip phones over the years. Mine have never
gone a full week, but I see phones now with up to 9 hours talk time.
I got a new flip phone for a friend after his was cut off due to
being too old. The new one has a larger screen that he might
actually be able to read the time on (he's legally blind). It has
lots of smart phone features it seems, not that they will do him much
good. Very few products work for the blind even when they could be
made so.

For blind people phones with real buttons and braille on the keys are
pretty much the only sane option. Using a smart touch screen with no
tactile feedback is nigh on impossible if you cannot see the layout.

On the plus side now with voice recognition so good they can say
"Alexa/Siri phone Fred" or "turn on the TV".

--
Regards,
Martin Brown

 

[Rick C]

On Saturday, August 3, 2019 at 8:11:37 AM UTC-4, Martin Brown wrote:

On 02/08/2019 20:41, Rick C wrote:
On Friday, August 2, 2019 at 3:04:38 PM UTC-4, John Larkin wrote:
On Fri, 2 Aug 2019 10:17:57 +0000 (UTC),
DecadentLinuxUserNumeroUno@decadence.org wrote:

My wife's new iPhone X requires a recharge every single day (as did its
6 series predecessor). Usage profile on both phones broadly similar.

Hers gets a bit more hammer on Google maps and mobile data.

I was looking at new cars and was told they are not pushing the in car navigators now. They let you tie your cell phone into the console. I guess they have an app that works with the phone app to display a map.

I wonder what happens when cell coverage is lost? That happens often where I roam. Not for long times, but more than a minute.

I don't use my phone a lot either. A quick scan of talk times show they have improved for flip phones over the years. Mine have never gone a full week, but I see phones now with up to 9 hours talk time. I got a new flip phone for a friend after his was cut off due to being too old. The new one has a larger screen that he might actually be able to read the time on (he's legally blind). It has lots of smart phone features it seems, not that they will do him much good. Very few products work for the blind even when they could be made so.

--

Rick C.

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