MH's ideal coil and voltage question

[picowatt]

Welcome???

I have to take several "breaks" from this forum from time to time as the non-productive "attitudes" and outright craziness this forum sometimes erodes into is sometimes difficult to take.  The last time I took a break for a while was just prior to this thread starting.  At that time I believe models depicting shorted inductors and GB's flat Earth thing all just became a bit too much...

Anyway, I recently went back to the beginning of this thread to re-read it and I see right on page 2 of this thread, a first (and only) time poster going by "Didymus" posed the following:

Somebody has to go back to basics, it might as well be me.

The definition of an ideal inductor is a two-terminal device that obeys the current/voltage relationship:

V = L dI/dt  where V is the applied voltage, L is the inductance in Henries and dI/dt is the rate of change of the current with time.  The impedance of the voltage source and the resistance of the inductor are both assumed to be zero.

This definition can be rewritten as dI.dt = V/L.  Given an initial current of zero, applying 4 V to a 5 H inductor leads to a current through the inductor that increases at 0.8 amps per second.  After three seconds the current will be 2.4 amps.  If the supply is not turned off the current will increase indefinitely at 0.8 A/second.  There are no time constants involved.

For completeness, a capacitor is a two-terminal device the current through which is given by the equation:
I = C dV/dt where C is the capacitance in Farads.  The current through the capacitor is proportion to the rate of change in the applied voltage times the capacitance.  In this case applying a fixed current results in a voltage across the capacitor that increases indefinitely.

I don't believe anyone ever responded to this excellent post (correct me if I am wrong, perhaps I have not yet read far enough).  Apparently, this was Didymus' first, only, and last post on this forum.

How long has this forum been around?  10 or 15 years?

I can remember a time long ago when this forum seemed a bit more polite and respectful.  Heck even newbies, upon their first postings, were welcomed by members as they responded to their posts.

Perhaps we could all just ease up a bit on the emotional investments and show a bit more consideration for each other.

End of speech...

PW

[MileHigh]

This has to be the lowest, most ignorant, vile and despicable posting I have ever read here on O.U.com, and believe me, that is really saying something.  You have set a new low.  I used to have some respect for your knowledge Sir, but no longer.

You have just singlehandedly redefined the word scumbag.

Nice going.

Judging from all of the emails, and postings, I am not alone in my assessment.

Bill

Take a chill pill Bill.  If you recall MarkE was not exactly impressed when Chet wanted to organize a test for the infamous GDS Generator.  I am sure many other things helped him formulate his opinion.  All that Chet has been doing has been acting like a spoiled over unity brat filled with attitude.  Having him know how a former respected member of the forum sized him up was appropriate since he wouldn't stop acting like a spoiled brat that didn't get his cookies.  He can have his resonance fetish without trying to ruin my perfectly good discussion about true resonance.  The ignorance enforcer boy got a well-deserved smack-down.  Citing MarkE's opinion was not so "low, ignorant, vile and despicable."  You are over dramatizing the situation.

Actively trying to impugn a perfectly good discussion about the true scientific meaning of resonance because that disturbs your resonance fantasies, as well as continuously making false straw man arguments about someone and just being a general overall nuisance became a bit much hence the smack-down.

There is no damn reason in the world that Chet can't have his resonance fantasies, hopes and dreams while I discuss the actual meaning of true resonance and evaluate systems that may or may not be truly resonant - NONE.

[scratchrobot]

This has to be the lowest, most ignorant, vile and despicable posting I have ever read here on O.U.com, and believe me, that is really saying something.  You have set a new low.  I used to have some respect for your knowledge Sir, but no longer.

You have just singlehandedly redefined the word scumbag.

Nice going.

Judging from all of the emails, and postings, I am not alone in my assessment.

Bill

You should continue to respect his knowledge and help shutdown this site so people stop posting al that nonsense about OU!
Wake up all your wishful thinkers and let the real scientists discover better ways to get electricity.
Buy some solar panels if you want free energy.

[tinman]

Welcome???

I have to take several "breaks" from this forum from time to time as the non-productive "attitudes" and outright craziness this forum sometimes erodes into is sometimes difficult to take.  The last time I took a break for a while was just prior to this thread starting.  At that time I believe models depicting shorted inductors and GB's flat Earth thing all just became a bit too much...

Anyway, I recently went back to the beginning of this thread to re-read it and I see right on page 2 of this thread, a first (and only) time poster going by "Didymus" posed the following:
I don't believe anyone ever responded to this excellent post (correct me if I am wrong, perhaps I have not yet read far enough).  Apparently, this was Didymus' first, only, and last post on this forum.

How long has this forum been around?  10 or 15 years?



Perhaps we could all just ease up a bit on the emotional investments and show a bit more consideration for each other.

End of speech...

PW

Mmm
Seems you are right PW.
I normally read all post in a thread,unless i enter the thread after page 20 or around abouts,but seems i missed that one altogether-along with everyone else. He joined the day of the post,and has not posted since,and it is the only post he made here.

I can remember a time long ago when this forum seemed a bit more polite and respectful.  Heck even newbies, upon their first postings, were welcomed by members as they responded to their posts.

Yes,perhaps you are right,and i do feel bad about missing that post,although i do not know how i did,as he had the calculated answer up on the second page.


Brad

[tinman]

And you are still stuck.  Surprise surprise.    This was also covered in the thread multiple times.

Plus ça change, plus c'est la même chose.

The CEMF is identical to the applied EMF.

I asked Poynt what he thought of your comment above,and he said--i will let MH explain that.
So could you please explain as to why you think the CEMF is identical to the EMF that created it?

Brad