I.ve never heard of any of this, is the guy speaking sense?

 

I first encountered the notion of the Debye Sheath (though it was simply called a plasma sheath by most sources I tracked down) when learning about semiconductor wafer fabrication -- in particular the specific fabrication techniques that affect device matching and anisotropies and some of the techniques that are used in analog processes to mitigate them that are often ignored in logic processes because digital designs are far more tolerant of them. At the basic level, the effect has a significant effect on the energy of ions that strike the wafer during ion etching or ion implantation, so it has been extensively studied in order to be able to make functioning wafers with high yield. The specific effect he is talking about, which is less of a concern for the fabs, also contributes to device asymmetries even between closely spaced devices on the same die. There are layout techniques that can randomize it to get better matching over the entire chip, which is often very important for the types of chips that we designed, and since we usually used logic process to implement our mixed-signal designs because we wanted the epitaxial wafers owing to the large-die array-oriented structures most of our designs focused on. So we had to take extra care to in our layouts in order to get matching performance from a logic process that was comparable to what most people expected from an analog process (in fact, we often exceeded it).

In the first part of the video it sounded like he was chasing a ghost because he was assuming that everything it his circuit is perfectly symmetric and it sounded like he was then going to "discover" some mysterious effect that science had never heard of to explain what he was observing under the assumption of that perfect symmetry. But towards the end of the video he honed in on the fact that nothing is perfectly symmetric and that positive feedback is what ultimately drives the observed asymmetries.

 

Amazing.
But I think he didn't represent so well the thing with 0 V dc.
Surely the plasma is distorting the waveform of current in relation to the voltage, and thus it generates a DC component.
But what if we get to adjust this waveform (distort) in the opposite way before applying to the electrode? It wouldn't be 0 Vdc yet, yes, but it would be close. So close that the arc wouldn't spin at the same "high" angular speed. The arc would spin slowly. That would be an interesting thing to understand (how the arc distorts the waveform), I don't know, maybe it's a well known thing in arc welding, or other area. I'm just putting my thoughts here.

 

I.ve never heard of any of this, is the guy speaking sense?

Just saw your question.
In his defence, he's always said coherent things from the years I've been viewing his videos. Always bringing some cool content and previously undiscovered by youtubers like him. I'm pretty sure he did a good amount of research about the topic.

 

In his defence, he's always said coherent things from the years I've been viewing his videos. Always bringing some cool content and previously undiscovered by youtubers like him. I'm pretty sure he did a good amount of research about the topic.

I can't get past the fact that he reminds me of a guy in desperate need of a girlfriend.

But, I guess many of us have been there -- at one point or another.

 

I can't get past the fact that he reminds me of a guy in desperate need of a girlfriend.

But, I guess many of us have been there -- at one point or another.

He's trying that 80's visual, but he changes quickly too. I don't know if you said this about his style, the way he talks, or the topics he choose.

 

He's trying that 80's visual, but he changes quickly too. I don't know if you said this about his style, the way he talks, or the topics he choose.

Just a general (and probably unfair) impression.

Here's what Grok says:

It's probably the earnest, slightly awkward "science guy" energy combined with the solo-lab vibe.

James Orgill (the guy behind The Action Lab) comes across as a super enthusiastic, PhD-holding chemical engineer who geeks out hard over "what if" experiments in what often feels like a very personal, slightly isolated garage/lab setup. He's got that classic nerdy-presenter look: friendly smile, practical clothes (hoodies, lab coats, safety gear), expressive but not overly polished delivery, and a genuine excitement that's endearing but can read as "this dude pours all his passion into vacuum chambers and liquid nitrogen instead of dating apps."

Why the "desperate for a girlfriend" reminder?

• Solo enthusiast archetype: Many of his videos have him alone tinkering with wild setups, narrating to the camera like he's sharing his latest obsession with whoever will listen. It gives off strong "passionate hobbyist who hasn't quite cracked the social scene" vibes—think early YouTube science channels before they got slick. (In reality, he's married with kids and does some family stuff on the channel, but the main persona is very much "me and my experiments.")
• Appearance and demeanor: Clean-cut, midwestern-ish nice guy energy (he's from the BYU/Intel Oregon world), no flashy charisma or "alpha" presentation. He's relatable and low-key, which some viewers interpret as "wholesome but maybe needs someone to drag him out for dinner instead of crushing more things in a hydraulic press."
• Content style: The childlike wonder + occasional mild chaos (things exploding or melting) without much "cool guy" framing. It's pure curiosity porn, which can feel like the romantic equivalent of a guy whose entire personality is his model train collection.

It's a common trope for science YouTubers—Mark Rober has more polished "successful dad" energy, while James feels more like the pure-hearted lab rat who might forget to update his dating profile because he's busy making the darkest fabric ever. Harmless and charming, honestly. If it reminds you of someone specific, maybe it's hitting on that "great guy energy that's underutilized socially" note.

 

Just saw your question.
In his defence, he's always said coherent things from the years I've been viewing his videos. Always bringing some cool content and previously undiscovered by youtubers like him. I'm pretty sure he did a good amount of research about the topic.

Well I just never ever heard of the phenomenon, we learn something every day. I was skeptical though of his leaping to conclusions, like the "explanation" of the (purported) temperature difference between the two conductors of his Jacob's ladder, and the pickle? WTF is that all about?

 

...and the pickle? WTF is that all about?

How do you cook your pickles?

 

Just a general (and probably unfair) impression.

Here's what Grok says:

It's probably the earnest, slightly awkward "science guy" energy combined with the solo-lab vibe.

James Orgill (the guy behind The Action Lab) comes across as a super enthusiastic, PhD-holding chemical engineer who geeks out hard over "what if" experiments in what often feels like a very personal, slightly isolated garage/lab setup. He's got that classic nerdy-presenter look: friendly smile, practical clothes (hoodies, lab coats, safety gear), expressive but not overly polished delivery, and a genuine excitement that's endearing but can read as "this dude pours all his passion into vacuum chambers and liquid nitrogen instead of dating apps."

Why the "desperate for a girlfriend" reminder?

• Solo enthusiast archetype: Many of his videos have him alone tinkering with wild setups, narrating to the camera like he's sharing his latest obsession with whoever will listen. It gives off strong "passionate hobbyist who hasn't quite cracked the social scene" vibes—think early YouTube science channels before they got slick. (In reality, he's married with kids and does some family stuff on the channel, but the main persona is very much "me and my experiments.")
• Appearance and demeanor: Clean-cut, midwestern-ish nice guy energy (he's from the BYU/Intel Oregon world), no flashy charisma or "alpha" presentation. He's relatable and low-key, which some viewers interpret as "wholesome but maybe needs someone to drag him out for dinner instead of crushing more things in a hydraulic press."
• Content style: The childlike wonder + occasional mild chaos (things exploding or melting) without much "cool guy" framing. It's pure curiosity porn, which can feel like the romantic equivalent of a guy whose entire personality is his model train collection.

It's a common trope for science YouTubers—Mark Rober has more polished "successful dad" energy, while James feels more like the pure-hearted lab rat who might forget to update his dating profile because he's busy making the darkest fabric ever. Harmless and charming, honestly. If it reminds you of someone specific, maybe it's hitting on that "great guy energy that's underutilized socially" note.

Add this guy to the list, I wont be surprised if this guy blows himself up eventually or gets arrested for theft.

 

...and the pickle? WTF is that all about?

It's a classic high-voltage demo. As current passes through the pickle, sodium atoms are excited and emit a yellow-orange glow. It shows up very intensely because pickles are fairly translucent, so you see the light that is emitted throughout the body of the pickle, not just at the surface. It typically involves high voltages and sufficient current to be lethal (neon sign transformers are commonly used).

 

Add this guy to the list, I wont be surprised if this guy blows himself up eventually.

No. I suspect he's got lots of girlfriends. Just on account of his hair.

 

ok but how about sticking to topic and make discussion about things TS is interested about? he does seem to care about experiments and not dating profile or presentation style of youtube characters.

 

It's a classic high-voltage demo. As current passes through the pickle, sodium atoms are excited and emit a yellow-orange glow. It shows up very intensely because pickles are fairly translucent, so you see the light that is emitted throughout the body of the pickle, not just at the surface. It typically involves high voltages and sufficient current to be lethal (neon sign transformers are commonly used).

So he wasn't just applying 120v AC to that pickle?

 

So he wasn't just applying 120v AC to that pickle?

No, it requires high voltage -- thousands of volts. As stated, neon sign transformers are commonly used, which deliver a few thousand to a couple tens of thousands of volts and tens of milliamps. I think in the video he mentioned that he used the same transformer that he used for the Jacob's ladder.

 

No, it requires high voltage -- thousands of volts. As stated, neon sign transformers are commonly used, which deliver a few thousand to a couple tens of thousands of volts and tens of milliamps. I think in the video he mentioned that he used the same transformer that he used for the Jacob's ladder.

Well I'm familiar with neon, but the video's opening pretty strongly suggests that he's connected the vegetable straight to the 120v AC line, the guy is a poor communicator.

The presentation skills I see on Youtube too, are pretty poor, the robotic gesticulations are too much, make these people hard to listen to sometimes.