HP I understand what you mean about ghost towns serenely beautiful if can think on them without tragic history.

There is indeed a sense of peace and serenity that escapes description - though, as you point out, the tragedy of the past is quite difficult (and, perhaps, inappropriate) to 'occult' from mind...

HP you too worried about things like that! I caught it and moved on like you should have

As a courtesy to other readers of this thread and to myself - When you notice errors please speak up! Jeeeeze!!!!

Now since you're obsessing I say you should be careful about _qv_ cause you of all know they interpret that _quick visit_ in Duluth!

IWHT you knew I forgot all that lingo when I gave up vice following Jimmy Carlson's conviction -- 'The Life' pays well but the hours and benefits are lousy -- Alas! - To have fallen from an engaging and exciting existence of self-degradation, omnipresent danger, disease, decadence and addiction - to a mundane, boring and predictable life of physical science and mathematics! - Donny Ness has much to answer for! -- Ya know! Duluth was as the last 'frontier town' -- Soon they'll be saying "it's a nice place to raise a family" Sad days! Sad, sad days!!!

OBTW the entire paragraph (immediately above) is a joke! -- I hope this disclaimer is unnecessary!

Best regards
HP

 

IWHT you knew I forgot all that lingo when I gave up vice following Jimmy Carlson's conviction -- 'The Life' pays well but the hours and benefits are lousy -- Alas! - To have fallen from an engaging and exciting existence of self-degradation, omnipresent danger, disease, decadence and addiction - to a mundane, boring and predictable life of physical science and mathematics!

If joke was true you made good turnaround cuz JC convicted just 2 years ago Instead of rags to riches would be like you went from deBasement to da_Garrett!

Donny Ness has much to answer for!

At least goody two shoes not running for new term! HP part of paragraph about sad how Ness try tame Duluth not joke! We need place like you say frontier town where people can be just people instead of live in baby proofed playpen! I always said Don Ness look like Fred Rogers so he is one book well judged by its cover!

HP plz take care on trip cuz I worry! Remember you promise back to tutorial next month can't do that from hospital bed or coffin

 

HP why you being so standoffish? If it is that you're POed about Little Jerk Trudeau's victory you should relax cuz I'm the one stuck with it! Little Jerk loves his [country's] enemies and his victory shows that meek can inherit earth so he part of grand plan? Scuse me while I hurl So politics like weather its good bad and over and over again! I say back to business as usual and I'm holding you to your promise of PS construction tutorial

 

HP I say you'd better start posting again asap or you'll be making people think you were drunk and told full _truth_ in post 181 and now too ashamed to come back!

 

HP I say you'd better start posting again asap...

HP why you being so standoffish?

How many ways are there to say it? If I'm to make time for the tutorial I must address other responsibilities now! --- This precludes my response to every whimsical notion that crosses your mind!

So here we go again --- Know, however, this is IT as regards response to all off-topic and protracted on topic inquiries/comments pending completion of the tutorial...K?

Instead of rags to riches would be like you went from deBasement to da_Garrett!

Oh! You're a riot! -- I bet you knock 'em dead at the Improv

RE: Don Ness

At least goody two shoes not running for new term

Amen to that! -- Still - the damage is done

RE: Justin Trudeau

Little Jerk loves his [country's] enemies and his victory shows that meek can inherit earth so he part of grand plan? Scuse me while I hurl

---Emphasis added---

Did it stop at 'meek' that'd be bad enough -- unfortunately the 'prophecy' would seem to extend to cowards of the first order -- to wit: those afraid, unwilling and unable to so much as think for themselves -- said condition afflicting all western culture (at least)... Though I'm bound to say deceit, self interest, hypocrisy and ignorance are traits shared by most politicians --- IMNSHO by comparison to many in Washington, JPJT is a mild setback at worst

So politics like weather its good bad and over and over again

Indeed! -- And on that note, as a courtesy those who may not share our views, let's cool it with the politics, Ok?

Remember you promise back to tutorial next month can't do that from hospital bed or coffin

Hmmm.... Now I've gotta wonder which would be the greater challenge: Posting from 'beyond the veil' -- OR -- inpatient use of alleged telemetry disruptive devices with impunity!?

All the best
HP

 

How many ways are there to say it? If I'm to make time for the tutorial I must address other responsibilities now! --- This precludes my response to every whimsical notion that crosses your mind!

HP I get IT so I wait patiently

 

This space intentionally left blank

 

This space intentionally left blank

 

HP I know you not get fully back to this until a couple weeks so can I be of help by proofreading ahead?

 

HP I know you not get fully back to this until a couple weeks so can I be of help by proofreading ahead?

Let's wait a few more days for a response to the inquiry we have in to the 'Suggestions Form' (Spec a 'go -- no go' on our idea of creation of a shared user account for editorial purposes) -- Whence we will proceed accordingly as per "Ludwig's Paradigm of Facultation" --- Many, many thanks!!!

All the best
HP

 

Let's wait a few more days for a response to the inquiry we have in to the 'Suggestions Form' (Spec a 'go -- no go' on our idea of creation of a shared user account for editorial purposes) -- Whence we will proceed accordingly as per "Ludwig's Paradigm of Facultation" --- Many, many thanks!!!

All the best
HP

HP Plz make sure you see my remarks on suggestion forum I think I stated proposal right so plz make sure! In case you wondering my ideas about strict use of edit acct is to allay possible Mod concerns that we or others wanting same accommodation would use acct for private user groups or just clowning around

Google no help for Ludwig Should I know his/her paradigm (which I say is really axiom based on context of your citation)? Sorry because been a long day for me!

 

In case you wondering my ideas about strict use of edit acct is to allay possible Mod concerns that we or others wanting same accommodation would use acct for private user groups or just clowning around

100% Agreed! -- If authorized, use of said account should be restricted to editorial functions on the tutorial development thread only!

Google no help for Ludwig Should I know his/her paradigm (which I say is really axiom based on context of your citation)

I thought... Never mind! -- Must have been two other Alephs!

So - here goes...
Note: 'facultation' (in 'the day') was essentially synonymous with the modern usage of 'authorization' or 'consent' -- While Ludwig's Paradigm referrers to a legal precedent in regards to railroad easements - it yet enjoys modern application to 'consent' and 'contract' law...

So, with no further ado:
Ludwig's paradigm of facultation:
Yes=Yes
No=No
Default = Nothing authorized

Hence, assuming 'positive logic':
Yes=Consent granted
No=Consent denied/revoked
No response=Consent denied/revoked

FWIW: An important aspect of 'Ludwig' is to be noted in the fact that consent/authorization is explicit as opposed to implicit -- hence past authorization or 'course of conduct' does not constitute active authorization and is inadmissible as evidence thereof...

Bringing this back to the case in point -- I was merely stating that no response from the Mods must be viewed as a denial until such time as a response is forthcoming

BTW - As you know, I am no barrister! -- Hence the 'criminal' shabbiness of my legalese

Best regards
HP

 

HP I would say word economy is not, like you say, your strong suit but intro to Ludwig law too interesting!

HP please help me understand distinction of intromissive velocity and disruptive velocity? No matter how many times I reread text I not see difference and internet brain dead on subject You know this not homework in strict meaning of word cuz it totally self instruction! Is in regard to property of degenerate fluid like metallic hydrogen or conduction electrons considered as elastic fluid (means gas)

 

You know this not homework in strict meaning of word cuz it totally self instruction

Hey, Aleph --- I've given your inquiry a good deal of thought -- The challenge, as it were, is to 'nudge' you in the correct direction sans depriving you of 'discovery'...

HP please help me understand distinction of intromissive velocity and disruptive velocity? No matter how many times I reread text I not see difference

As I read your question it seems your difficulty owes not only to failure of your resource to distinguish the phenomena in question but to properly define same (hence the elusive distinction)

Thus I will offer 'hints' and two (flawed, yet, I feel, helpful) examples --- Note: Inasmuch as the properties of degenerate fluids would seem to be irrelevant to the subject at hand I shall omit discussion of same for the nonce...

To Begin:

Within the context of 'dynamics' intromission and disruption represent two of several possible reactions to material interference...

For these purposes:
Intromission --OR-- disruption velocity = the minimum velocity at which, for given geometries, mass, interface surface areas and kinetic reactance (cip elasticity) exactly one of the following interference reactions must occur:

Intromission: The process of 'opening' a pre-exsisting 'passage' -- Specifically: via overcoming elastic opposition to such interference... --- Important -- Re: fluids -- In this regard all contiguous gasses and elastically-bound liquids/SCFs may be regarded as comprised of ubiquitous closed (unoccupied) passages...

Disruption: The process whereby a passage is defined by the path of the 'intromissor' as opposed to 'provided' by the 'intromisee'

As a conceptual aid I offer the the following (non-fluid) Loony-Toons analogy/example

Ex. 1
So... In our cartoon tableau we see a frontier saloon complete with 'classic' spring-loaded swinging doors:
--The Coyote runs through the doors causing them to swing aside as he passes -- In this case the Coyote's velocity is greater than or equal to intromission velocity --- But less than disruption velocity...
hence he (the Coyote) merely opened the pre-exsisting 'passage'

-Next the Roadrunner sprints through the doors but with such celerity that the doors' inerta 'over equals' their structural integrity -- with the result that (in our perfect paradigm) the doors remain closed but damaged such that each half of the Roadrunner's outline is broken out of each door --- In this case the roadrunner's velocity exceeded disruptive velocity hence he (the Roadrunner) created 'his own' passage --- Got it?

Following is an illustration of the relevancy of elasticity (i.e. 'kinetic reactance') to interference phenomena -- Please recall that intromission is relevant solely to elastic phenomena...

Ex. 2
Imagine you wish to 'don' a garment featuring full-length elastic sleeves (exhibiting an unoccupied I.D. significantly less than the diametric dimension of your clenched hand; The force required to start your hand into the sleeve will owe to frictional and elastic 'loading' but only until such time as the greatest diametric aspect of your hand has entered the sleeve whereupon intromission is complete and all further opposition to forward motion is purely frictional despite the fact that you are continuously opening the sleeve ahead of your hand (hence your ability to move about in the atmosphere sans interference from elastic loading) -- Note: The described abatement of elastic loading is not owed to cancellation of opposite acting elastic 'forces' each end of your hand! --- IPOF the above applies equally to an 'intromissor' of the form of an infinitely-long cylinder inserted to or beyond one cylinder radius --- Do you find this counter intuitive?

-Hint:Transducer theory!!!
-Hint: Are you regarding continuous phenomena through a discrete 'lens'?

Note that whereas Ex. 1 deals, in essence, with 'projectiles' (i.e. thrust translated from mass 'force') and Ex. 2 with a 'press' i.e. continuously applied 'motive' thrust -- the phenomena under examination are equivalent within the confines of this discussion...
Caveat: Both examples are flawed in that they fail to illustrate the independence of intromisive and distensive phenomena...

More hints:

-The fluid dynamics equivalents of solid disruption are 'Cavatation' and 'Shock'
-The upper limit of intromissive velocity to fluids (regardless of all other factors) is that velocity at which disturbances propagate through a specific fluid under identical conditions of temperature and pressure --- Note: for these purposes, discontinuities (e.g. 'shock waves', 'solitons', etc...) do not qualify as disturbances in fluids' -- Expansion upon request)

-Identify the distinction between the two principal disruptive mechanisms manifest in disruptive dissolution of solids and semisolids (To: wit 'Shatter' vs 'Splatter')

@Aleph(0) I hope this somewhat helpful! --- More rigor upon request - however I think you get it???

All the best
HP

 

@Aleph(0) I hope this somewhat helpful!

HP thanks now I totally understand distinction! Examples perfect! I now curious because of other hints and remarks so can ask after think about them?
Now I have other question about opinion more than science but bug me ever since tiny little Aleph! Why ppl say warm light when spectra predominately low PE and cold light for high PE spectra? It just backwards and wrong! I give up argue with them like you say only fool try to steal illusion from a numpty

 

Why ppl say warm light when spectra predominately low PE and cold light for high PE spectra? It just backwards and wrong!

I've often wondered about that myself -- My best guess is that it's down to the fact that long wavelength visible spectra is consistent with that of flame attending combustion of wood, oil, coal, etc... -- which being the principal means of domestic heating for most of recorded history --- Hence the following 'logic': "Fire emits low PE spectra, fire is warm - ergo low PE spectra is warm" --- Of course you are correct - from a thermodynamic standpoint they've got it 'the wrong way around' -- but then our species' acquaintance with fire significantly predates the advent of thermodynamics

Again, the above is merely a (considered) guess -- Another (not entirely unrelated) possibility may be found in the observation that several sources of red light extend to the far infrared region -- said radiation being generally regarded as 'radiant heat' for its pronounced dielectric heating of tissue...

Do you have have any theories/opinions on the subject?

All the best
HP

 

Do you have have any theories/opinions on the subject?

HP now you say it I think you exactly right about low energy light spectra called warm cause like firelight! Now I wondering why high energy rays called cold? Ice is depicted blue and purple in media like Polaris sled logo and cold compresses and ice freezers at service plaza! I know some allotropes of solid water preferentially transmit blue light but not seen on earth outside lab cause only high pressure forms. I say ice can't be thought blue cuz of reflection of sky cuz ice usually snow covered or too rough to reflect without diffusion. HP I know you too busy for like you say my whimsical questions but I think this interesting and think you do too? HP plz post schematic of like you say duel lopt xray generator (which I know means high frequency hv power supply for tube)

 

HP plz post schematic of like you say duel lopt xray generator (which I know means high frequency hv power supply for tube)

Inasmuch as you are familiar with the 'inverter' topologies, I take it you mean the output 'stage'?

Here ya go! -- Note that L1 and L2 are the floating EHT windings (isolated as per the tutorial) - the 600V MOV is to achieve ground bondage (purists will place one each side of the indicator -- howbeit such is seldom done in practice, moreover I'm not sufficently enamored of MS Paint to strive for that level of purity!)

Note that the indicator will be ether a simple milliampere meter or a mAs (i.e. milliCoulomb) 'clock"

The capacitors in my designs are 10nF @ 50kV --- Tho 'play time' with LTspice is telling me I can get away with 500pF? -- Very nice if correct! -- Some mathematical and empirical investigation is in order!

For low power applications (i.e. not in excess of either 500W or 5mA) The rectifiers may be 'El-cheapo-deluxe' standard TV retrofit 'sticks' (e.g. GE-513 // PIV=45kV, I(f )Peak = 200mA I(f) Cont = 5mA) --- At < 10mA recovery time is acceptable to 50kHz)

My test circuit runs each (rebuilt) LOPT at 25kV Peak (yes, I know! -- I'm [slightly] abusing the rectifiers! - So... they don't seem to mind!) for ~93kV output at 5mA (ripple at said load ~ 800V)

FYI here are the EMF requirements in regards to full wave doublers:

Entire winding to earth insulation: ≥Ep --- CIP ≥25kV
Rectifier: PIV ≥ 2*Ep: --- CIP ≥50kV
Capacitor: MWV ≥Ep --- CIP ≥25kV Note: this is not a typo! - it is, rather, one of the several advantages of FW doublers!

Hey, @Aleph(0) --- I really do have a some things to 'square away' If I'm going to have time for the tutorial early Nov...K?

Best regards
HP

Acknowledgments:
LTspice Schematic editor
MS Paint

 

Hey @Aleph(0) when you get a chance please proofread the well-nigh completed sections of the tutorial, then:

--Please advise of minor errors (e.g. spelling, wrong-word, punctuation, etc...)
--In the event of more serious errors (e.g. syntax, morphology, etc...) -- Please post the corrected/revised text as per your suggestions...

--Please don't be 'bashful' as regards suspected technical errors!!! --- If it doesn't make sense maybe it's just plain wrong! -- As I hope you are aware, vanity is not among my vices! -- Humility compares most favorably to ignorance (blissful or otherwise)!

Pleased don't feel pressured! -- I'm grateful for your assistance when and how you find it convenient!

Best regards
HP

 

@Aleph(0) --- Incase you've been 'looking in' -- Please mind your BP! - Despite appearances I am working on the tutorial (off-list)

Wishing you a safe and productive trip! - and looking forward to your return! --- The echoes!!!

All the best
HP