basics of electronics

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BBC

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Why does the electrons move from one orbit to the next orbit?
what is the radius of the electron,proton and neutron?
conductivity of electrons in various liquids?
 
On 05/04/2011 05:08 PM, BBC wrote:
Why does the electrons move from one orbit to the next orbit?
what is the radius of the electron,proton and neutron?
conductivity of electrons in various liquids?
Click to expand...
Why do people ask physics questions on electronics newsgroups?

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com

Do you need to implement control loops in software?
"Applied Control Theory for Embedded Systems" was written for you.
See details at http://www.wescottdesign.com/actfes/actfes.html
 
"Tim Wescott"
BBC wrote:
Why does the electrons move from one orbit to the next orbit?
what is the radius of the electron,proton and neutron?
conductivity of electrons in various liquids?

Why do people ask physics questions on electronics newsgroups?
Click to expand...

** Cos the word "electronics" has two meanings, depending on context.

1. A branch of physics.

2. A branch of engineering.


...... Phil
 
BBC wrote:

Why does the electrons move from one orbit to the next orbit?
what is the radius of the electron,proton and neutron?
conductivity of electrons in various liquids?
Click to expand...
If this isn't in your textbook, then you might have to go to the
school library or ask the teacher.

Good Luck!
Rich
 
BBC wrote:
.........
what is the radius of the electron,proton and neutron?
.........
According to my vernier calipers from Harbor Freight, something
Click to expand...
under 2mm.
 
On May 4, 8:08 pm, BBC <ssundar.s...@gmail.com> wrote:
Why does the electrons move from one orbit to the next orbit?
Click to expand...
because energy has been added or removed.

what is the radius of the electron,
Click to expand...
that is so small that it has never been measured. it is a point
compared to modern tools for measuring it.


proton and neutron?

..000000000000001 meter

conductivity of electrons in various liquids?
Click to expand...
pure water has a conductivity of .0000000003 cm ohm

mercury has a conductivity of 200000 cm ohm.
 
conductivity of electrons in various liquids?

pure water has a conductivity of .0000003 / cm ohm

mercury has a conductivity of 200000 / cm ohm.
Click to expand...
correction made above, instead of cm ohm, use the reciprocal, 1 /
( ohm cm)
http://en.wikipedia.org/wiki/Conductivity_(electrolytic)
this link gives better values for liquids
 
On Fri, 6 May 2011 04:17:50 -0700 (PDT), Globemaker
<alanfolmsbee@cabanova.com> wrote:

conductivity of electrons in various liquids?

pure water has a conductivity of .0000003 / cm ohm

mercury has a conductivity of 200000 / cm ohm.

correction made above, instead of cm ohm, use the reciprocal, 1 /
( ohm cm)
http://en.wikipedia.org/wiki/Conductivity_(electrolytic)
this link gives better values for liquids
Click to expand...
---
So the "conductivity" of electrons changes depending on what fluid
they're in?

--
JF
 
On Thu, 5 May 2011 23:52:24 -0700 (PDT), Globemaker
<alanfolmsbee@cabanova.com> wrote:

On May 4, 8:08 pm, BBC <ssundar.s...@gmail.com> wrote:
Why does the electrons move from one orbit to the next orbit?

because energy has been added or removed.

what is the radius of the electron,
Click to expand...

that is so small that it has never been measured. it is a point
compared to modern tools for measuring it.
Click to expand...
---
???

Electron radius ~ 2.8e-13cm
---
proton and neutron?

.000000000000001 meter
Click to expand...
---
???

Proton radius ~ 8.5e-13cm

Neutron radius ~ 1.1e-13cm

--
JF
 
John Fields wrote:
On Thu, 5 May 2011 23:52:24 -0700 (PDT), Globemaker
alanfolmsbee@cabanova.com> wrote:

On May 4, 8:08 pm, BBC<ssundar.s...@gmail.com> wrote:
Why does the electrons move from one orbit to the next orbit?

because energy has been added or removed.

what is the radius of the electron,



that is so small that it has never been measured. it is a point
compared to modern tools for measuring it.

---
???

Electron radius ~ 2.8e-13cm
Click to expand...
No, that's the "classical electron radius",
http://en.wikipedia.org/wiki/Classical_electron_radius

which has essentially no physical significance whatever. Quarks and
leptons (i.e. electrons, muons, taus, and their respective neutrinos)
are still treated as quantum 'point masses' in the Standard Model, i.e.
their wave behaviour isn't modified by any internal structure.

(String theorists and other fantasy writers may have a different
opinion, but they have zero data to back it up AFAIK.)

Cheers

Phil Hobbs


---


proton and neutron?

.000000000000001 meter

---
???

Proton radius ~ 8.5e-13cm

Neutron radius ~ 1.1e-13cm
Click to expand...


--
Dr Philip C D Hobbs
Principal
ElectroOptical Innovations
55 Orchard Rd
Briarcliff Manor NY 10510
845-480-2058

email: hobbs (atsign) electrooptical (period) net
http://electrooptical.net
 
John Fields wrote:
On Fri, 6 May 2011 04:17:50 -0700 (PDT), Globemaker

conductivity of electrons in various liquids?

pure water has a conductivity of .0000003 / cm ohm

mercury has a conductivity of 200000 / cm ohm.

correction made above, instead of cm ohm, use the reciprocal, 1 /
( ohm cm)
http://en.wikipedia.org/wiki/Conductivity_(electrolytic)
this link gives better values for liquids

So the "conductivity" of electrons changes depending on what fluid
they're in?

It's kind of hard to imagine one electron having anything
Click to expand...
like "conductivity," but en masse, the conductivity of some
bulk substance would depend on the mobility of the electrons.

Hmmm - it's a good thing I checked before hitting "send" - I
guess an electron beam has some kind of conductivity, but I'm
pretty sure it takes more than one electron to make a "beam." :)

I've never been able to figure out how the positive conventional
current knows exactly which pixel to leap out of to follow the
exact path through the deflection plates or coils to land precisely
on the tip of the field-emission cathode. ;-D

Cheers!
Rich
 
On Fri, 06 May 2011 12:58:42 -0700, Rich Grise
<richg@example.net.invalid> wrote:

John Fields wrote:
On Fri, 6 May 2011 04:17:50 -0700 (PDT), Globemaker

conductivity of electrons in various liquids?

pure water has a conductivity of .0000003 / cm ohm

mercury has a conductivity of 200000 / cm ohm.

correction made above, instead of cm ohm, use the reciprocal, 1 /
( ohm cm)
http://en.wikipedia.org/wiki/Conductivity_(electrolytic)
this link gives better values for liquids

So the "conductivity" of electrons changes depending on what fluid
they're in?

It's kind of hard to imagine one electron having anything
like "conductivity," but en masse, the conductivity of some
bulk substance would depend on the mobility of the electrons.

Hmmm - it's a good thing I checked before hitting "send" - I
guess an electron beam has some kind of conductivity, but I'm
pretty sure it takes more than one electron to make a "beam." :)

I've never been able to figure out how the positive conventional
current knows exactly which pixel to leap out of to follow the
exact path through the deflection plates or coils to land precisely
on the tip of the field-emission cathode. ;-D
Click to expand...
---
It doesn't.

That's a myth that's been propagated since the days of Benjamin
Franklin, when he postulated that electricity was positive in nature.

--
JF
 
"BBC" wrote in message
news:5e1374dc-e91b-4f0a-b84d-e71144136168@17g2000prr.googlegroups.com...

Why does the electrons move from one orbit to the next orbit?
what is the radius of the electron,proton and neutron?
conductivity of electrons in various liquids?


Why don't you look it up. Go to a library and get a physics book.
When an electron moves from one orbit to a lower energy orbit it emits a
photon.

Electrons may or may not be conductive, I'm not sure, an element can be
conductive. Electrons just have a negative electric charge and when
electrons move(they don't actually move far, just transfer their charge to
the next adjacent electron), it's called current. Metals have free
electrons in a valence orbit, meaning that they can be moved and current can
flow in the material.

Shaun
 
On May 6, 2:52 am, Globemaker <alanfolms...@cabanova.com> wrote:
On May 4, 8:08 pm, BBC <ssundar.s...@gmail.com> wrote:

Why does the electrons move from one orbit to the next orbit?

because energy has been added or removed.

what is the radius of the electron,

that is so small that it has never been measured. it is a point
compared to modern tools for measuring it.

proton and neutron?

.000000000000001 meter

conductivity of electrons in various liquids?

pure water has a conductivity of .0000000003 cm ohm

mercury has a conductivity of 200000 cm ohm.
Click to expand...
According to Planks Quantum theory,what is the radius of electron?
 
Op 5/7/2011 3:00 AM, BBC schreef:
Planks Quantum theory,what is the radius of electron
Click to expand...
You really need to learn to Google.

Putting your question:
"Planks Quantum theory,what is the radius of electron"

reveals the answer in the first hit.

btw: length is always in meters when you read scientific documents.
And of cause Light years in astronomics.

--
pim.
 
John Fields wrote:
On Fri, 06 May 2011 12:58:42 -0700, Rich Grise

I've never been able to figure out how the positive conventional
current knows exactly which pixel to leap out of to follow the
exact path through the deflection plates or coils to land precisely
on the tip of the field-emission cathode. ;-D

That's a myth that's been propagated since the days of Benjamin
Franklin, when he postulated that electricity was positive in nature.

Do you need to refill your prescription for your irony medicine? ;-)
Click to expand...

Cheers!
Rich
 
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