Snake oil

[Cerebus]

Strictly that should be written ⁶³Ni to indicate the isotope. "Nickel 63" is more likely to indicate the name of some Heavy/Thrash Metal band. 

[Cerebus]

Every atom of nickel in the universe has the same atomic number: 28. Atomic number 63 is europium.
Radioactive decay is not a nuclear reaction. By the universally accepted definition of a reaction there must be at least two reagents.

 

⁶³Ni <=> ⁶³Cu + ß^-

Not a nuclear reaction eh?

[McBryce]

Strictly that should be written ⁶³Ni to indicate the isotope. "Nickel 63" is more likely to indicate the name of some Heavy/Thrash Metal band. 

Yeah, but I'm too stupid to find out how to do those little offset numbers

McBryce.

[helius]

⁶³Ni <=> ⁶³Cu + ß^-

Not a nuclear reaction eh?

Simple, comforting, and completely wrong. The "reaction" you have written is a violation of lepton conservation.

This is the real equation: $$ {^{63}_{28}\rm Ni} \rightarrow {^{63}_{29}\rm Cu} + e^- + \overline \nu_e $$
Note that there is one particle on the left and three on the right. This is why decay is a one-way process, not a reaction. If you put the neutrino on the left side you get something different (neutrino scattering).

[BU508A]

We need a LaTeX plugin for SMF ...

Edit:
Oh wow! How did you found out how to format your equation?    

[helius]

We need a LaTeX plugin for SMF ...

Edit:
Oh wow! How did you found out how to format your equation?    

There is a LaTeX plugin, it's called MathJax. (And it slows down page load significantly on older computers, but that's life.)
To learn what LaTeX macros were needed, I used this page: https://www.onemathematicalcat.org/MathJaxDocumentation/TeXSyntax.htm

You can create an equation in "display" mode by enclosing it in a pair of double-dollarsigns. I think for "inline" math mode you enclose it in a pair of backslash-dollarsigns. The way to write atomic mass-number symbols is interesting (many nested {} groups)

[Slartibartfast]

His first swing and a miss was "nickel-to-copper transmutation," a nuclear reaction so unlikely that it would not occur during a supernova.

Your physics seems to be quite rusty. Of course exactly this transmutation goes on in a supernova, but it does not need those conditions. Quite possibly you even have some electronics around inside which this transmutation happens!

Nickel isotopes with atomic numbers 63, 65 and higher are beta type radioactive, and therefore decay to copper quite a(u)tomatically. In fact, Ni63 was used in gas discharge tube type surge protectors, the radioactivity serves to improve trigger time. In old electronics items you may find some, and have a process going on in your hands that you believe could not happen in a supernova.

Every atom of nickel in the universe has the same atomic number: 28. Atomic number 63 is europium.

My most sincere apologies for picking the wrong word. I'd like to see you infallible writing in your second language. But I have a feeling, that except you everybody else in this forum understood what I wanted to say.

Radioactive decay is not a nuclear reaction. By the universally accepted definition of a reaction there must be at least two reagents.

Oooh, we have an inch pincher. 
Sorry, but beta decay is initiated by vacuum fluctuations of the electron and neutrino fields. There is your second reagent.

Google has quite a few hits for the word couple "radioactive reaction", some in scholarly text books ... 

[Slartibartfast]

Strictly that should be written ⁶³Ni to indicate the isotope. "Nickel 63" is more likely to indicate the name of some Heavy/Thrash Metal band. 

I had not known how to write superscripts. But your code shows me how to. But no guarantee that I'll remember, I'm active in too many forums that do not support this feature, or implement it in a completely different way. 

[Slartibartfast]

⁶³Ni <=> ⁶³Cu + ß^-

Not a nuclear reaction eh?

Simple, comforting, and completely wrong. The "reaction" you have written is a violation of lepton conservation.

Leptons are not conserved. Their number is. (Wanna beat me in nitpicking?  )

What is really relevant is the fact that without the neutrino, energy conservation would be violated. That is much more fundamental than lepton number conservation, which might be only approximate, for instance in the case the double-beta decay is observed and proves the neutrino field to be Majorana.

[Slartibartfast]

His first swing and a miss was "nickel-to-copper transmutation," a nuclear reaction so unlikely that it would not occur during a supernova.

Your physics seems to be quite rusty. Of course exactly this transmutation goes on in a supernova, but it does not need those conditions. Quite possibly you even have some electronics around inside which this transmutation happens!

Nickel isotopes with atomic numbers 63, 65 and higher are beta type radioactive, and therefore decay to copper quite a(u)tomatically. In fact, Ni63 was used in gas discharge tube type surge protectors, the radioactivity serves to improve trigger time. In old electronics items you may find some, and have a process going on in your hands that you believe could not happen in a supernova.

I would have believed EEVblog people would be more interested in these nuclides being used in surge protectors. Instead I get flamed for forgetting to write a single word ("atomic mass number" becomes "atomic number"), and "using" the word "reaction" where in fact I did not even write the word. Is this a philology (language) forum? I very much hope not!

[MazeFrame]

How about whatever this thing claims to do?

https://www.sbooster.com/sbooster-tweaks/vbus2-isolator/

Looking at this photo, it to me looks like it passes Ground and the Datalines through, but has a groundspring going to the case from the 5V  rail https://www.reddit.com/r/electronics/comments/cowh42/vbus2_usb_isolator_inside/

[AVGresponding]

-snip-

SPICE is well known for producing improbable and/or unrealistic results due to its limitations.

It is NOT a real world simulator, it is a circuit development AID.


You can't cheat the laws of thermodynamics, despite a seemingly endless line of kooks and con-men trying to claim otherwise.

[Vinyasi]

Could you please suggest a real world simulator to avail myself of its accuracy?

[Cerebus]

Could you please suggest a real world simulator to avail myself of its accuracy?

[Vinyasi]

recycling electrons

my first breakthrough

here's a micro-cap simulation

[AVGresponding]

Could you please suggest a real world simulator to avail myself of its accuracy?

Yes. It's called a "Laboratory". They have them in places like Universities, and in companies that can afford proper R&D departments. They are not plug and play; they require considerable knowledge and experience to get meaningful results.

[MazeFrame]

Anyone in the market for an Audiophool SSD?
http://zzyzxphile.com/eng/products/revelation_audio_ssd/

It looks like an underfunded janky university project.

[PlainName]

Genius. Wonder if they do a SATA version.

[McBryce]

Anyone in the market for an Audiophool SSD?
http://zzyzxphile.com/eng/products/revelation_audio_ssd/

It looks like an underfunded janky university project.

I was about to order one until I realised they only manage 9 on the sound stage vector. Such a disappointment, because every Audiophool knows that one's and zero's create a completely different MP3 file if the wrong capacitors are used!

McBryce.

[Miyuki Nyx]

This makes my head hurt, why do these things exist I was just searching for legitimate li-ion battery pack and there's tons of these misleading ones out there, I know the capacity of such cells and know the price range of them, the amount of batteries and the way they're linked in a pack is definitely not right!!
They even state the real capacity of them in the description as a facepalming slip UGH unbelievable!!
At least they got the voltage right!
 

[AVGresponding]

They do enjoy trying to confuse us. It's not unusual to see the the capacity of a multi-cell pack described thusly: V = (nominal cell voltage x number of cells (fine, that's acceptable)), Ah = (nominal Ah rating of cell x number of cells (*sighs* no! This is not how it works!)).

I have speculated before that the ludicrous Ah rating given to an individual cell (on ebay I think) was determined by (nominal Ah rating of cell x number of charge cycles in cell lifetime). The maths did work out...

[Cerebus]

I have speculated before that the ludicrous Ah rating given to an individual cell (on ebay I think) was determined by (nominal Ah rating of cell x number of charge cycles in cell lifetime). The maths did work out...

I have observed exactly that before, and it has come up here before with a pack with an astronomical Ah figure that if it were real could have been used to replace some of those toasty banks that Elon put in the Australian outback.

[Kim Christensen]

Ah = (nominal Ah rating of cell x number of cells (*sighs* no! This is not how it works!)

Or those power packs that have a 1000mAh 3.7V cell, a boost converter for 5V output, and label it as "5V @ "1000mAh".

[PlainName]

V = (nominal cell voltage x number of cells (fine, that's acceptable)), Ah = (nominal Ah rating of cell x number of cells (*sighs* no! This is not how it works!))

I'm pretty sure that is how it does work, just that you can't do both at once. In the context of a powerbank, the Ah rating certainly would be more likely to be nominal Ah x cell count.

[electr_peter]

10000 mAh is defacto standard among smaller power banks with 5V USB output. 10000 mAh is before boost conversion to 5V, of course.
Some power banks are more honest than others. Ultimate speed power bank declares different mAh ratings right on the box and case.