Flicker noise voltage distribution.

[JosephKK]

Thermodynamics, as you point out, is exact only in the limit of large
systems. On the other hand, Avogadro's number is practically infinite
for most purposes. How big the fluctuations are depends on how big the
system is, and a millikelvin is actually pretty big for most
objects--for a brick, it's probably femtokelvins.

Cheers,

Phil Hobbs

No, Avogadro's number in not in the least bit "really large". It is
actually fairly convenient for sizing rechargeable batteries. As is
Coulombs number. Even poor grades of practically infinite are well
above 10^10^10. We are still finding merseine prime numbers well
above 10^1000.

 

[Paul]

Let's all read his book, then read your book, and decide who
understands stuff.

John

I don't know if writing a book counts as being correct. ~ last year
via email Phil tried to tell me that it's impossible for a capacitor
to contain q/3 charge. For example, if you apply 1/2 uV on a 0.11pF
cap. I tried to tell Phil that on paper (pencil pushing) that's fine
and dandy, but in the real world, thermal energy continuously causes
electrons to flow inward and outward of a capacitor, that on average
there would be 1/3 of a coulomb. I guess he didn't like being
corrected, so once again he essentially *plonked* me by ending the
conversation in a childishly manner.

A computer may contain a lot of information, but it's not very clever
or acute. Some people know a lot, but they're not very clever or
acute.

Paul

 

[Tim Williams]

Paul is a googlegroups poster. Need we look further?

Non sequitur AND ad hominem. I occasionally post from Google; do my
electronic designs suddenly evaporate under such conditions?

Tim

 

[Paul]

Do you design electronics? Show us some.

John

I don't find much interest in proving myself. I vote for some mature
discussions on physics and engineering.

Paul

 

[James Arthur]

No, Avogadro's number in not in the least bit "really large".

Hence the refrain:

"On the Avagadroth's day of Christmas, my true love gave to me..." ?

Cheers,
James Arthur

 

[Paul]

Well, sci.electronics.design is often invaded by poseurs who want to
argue arcania about climate change or physics or evolution, and all
sorts of stuff. The arguments are usually fuzzy and oriented to,
indeed, proving the posters right and the rest of us dumb. They don't
seem to want to argue with genuine experts in those fields, so they
come here. And they don't design electronics.

Some people really like to bash engineers. Probably because we make
stuff that works, and they don't. Also, probably, because we have fun,
and they don't.

It's a sick world, isn't it? <<<G>>>

You seem to fit the pattern perfectly. If not, show us some real,
serious electronics.

You have the right to believe as you wish. I've built plenty of
circuits, but undoubtedly it wouldn't impress you. Does it even
matter? For the moment I'm into writing some semiconductor
fabrication software. You know, dopant densities, metal &
semiconductor selection, contact area, etc. The last circuit I built,
months ago, was an electrometer (~ 3fA bias current), connected to a
voltage-to-current amp driving an LED, which was connected to a 10ft
fiber optic cable going to a photodiode, connected to a FET op-amp.
Prior to that I designed an entire Ground penetrating radar (GPR),
utilizing Fourier transforms in deconvolution routines, capable of
detecting a metal object the size of a quarter buried 20 feet in good
ground. Lets not talk about "bad" ground, please. ;-) Prior to that I
designed a low end Nuclear magnetic resonance (NMR) system.


Paul

 

[JosephKK]

I'd consider Mersenne primes a bit of a niche interest, but then I don't
get out that much.

Numbers like 10**24 mean that even fluctuations, which tend to go like
sqrt(N), are down in the parts per trillion. As you point out, even
Coulomb's number is pretty big--we don't usually worry about the shot
noise of a current of an amp.

Cheers,

Phil Hobbs

I guess you have never had to repeatably measure picoamperes. Test
instruments finally got to measuring fractional attoamperes (<<
10^-15). It maters in some circuits.

 

[YD]

Late at night, by candle light, Phil Hobbs

I measure picoamperes all the time. I fail to see what that has to do
with whether Avogadro's number is big enough to impress...maybe Avogadro
has been reading his spam email lately...

So how much does a mole of spam weigh?

- YD.

 

[JosephKK]

Bad, bad guess. Read his book.

John

What book? ISBN?

 

[JosephKK]

Late at night, by candle light, Phil Hobbs


So how much does a mole of spam weigh?

- YD.

About 400,000 spambots.

 

[Jasen Betts]

About 24 litres of air at room temperature. Not a bad sized box!

a cube of about 1 foot on each side.

 

[YD]

Late at night, by candle light, Jim Thompson

Depends on whether it's a guaca-mole or not ;-)

...Jim Thompson

What happened to the kill filters you're oh-so-proud about?

- YD.

 

[YD]

Late at night, by candle light, John Larkin

I thought you didn't cook!

John

He's baking.

- YD.