Negative Inductance and measure of Magnetic force.

[lancaIV]

And with which polarisation relationship,kolbacict ?
Permanent magnet NS to electromagnet N or S ?
How works a shock wave lithotripsy machine ? Ultra sonic : frequency ? sound waves up to Theta


#629 these R.I.P. japanese scientist Dr. med. kazumi Masaki did some developments related audible frquency devices

[synchro1]

On a direct current it did not work for me. But on a variable, a really permanent magnet gives an increase in vibrations. If you use alternating current in the coil.

@Kolbacict,

Can you please try and upload a video of "A permanent magnet increasing A.C. current vibration"? Believe it or not, this video would set a new high water mark!

[lancaIV]

Good morning,synchro1 !


https://worldwide.espacenet.com/publicationDetails/biblio?DB=EPODOC&II=31&ND=3&adjacent=true&locale=en_EP&FT=D&date=19940113&CC=DE&NR=4215503A1&KC=A1


Increases level of self induction energy


Nothing special !


Energy/velocity relationship !  velocity : compression effect and phase angle chance

https://www.google.com/search?rlz=1C1AVFC_enPT797PT797&ei=bIZ4XpLiA4ONlwSqlp6ICQ&q=angle+speed+formula&oq=angle+speed&gs_l=psy-ab.1.1.0i19l2j0i10i19j0i19l2j0i22i30i19l5.5535.11282..15655...0.0..3.172.3255.1j25......0....1..gws-wiz.....0..0i13j0j0i67j0i10j0i22i30j0i22i10i30j0i13i30i19.8YSVKcqrJZY
  https://www.google.com/search?


q=winkel+geschwindigkeit&rlz=1C1AVFC_enPT797PT797&oq=winkel+geschwindigkeit&aqs=chrome..69i57.10438j0j7&sourceid=chrome&ie=UTF-8




https://www.khanacademy.org/science/physics/torque-angular-momentum/rotational-kinematics/v/relationship-between-angular-velocity-and-speed


this means,in easy definition manner ; energy/velocity     and/or  energy/speed          ratio      changing devices !




But : https://www.google.com/search?q=hamsterrad&rlz=1C1AVFC_enPT797PT797&oq=hamsterrad&aqs=chrome..69i57.4909j0j7&sourceid=chrome&ie=UTF-8


       fixed you can run fast or slow , it will stay on the same place  velocity and speed neutral


     
     On wheels ?
   

      on water ? unfixed ?


https://www.google.com/search?rlz=1C1AVFC_enPT797PT797&ei=1ol4XrLYKJCelwT3i4vQDA&q=schaufelradboot&oq=schaufelradboot&gs_l=psy-ab.12..0j0i5i30l3.8768.12572..16182...0.2..0.145.1355.3j9......0....1..gws-wiz.......0i71j0i13.xi5iKbqNJJ8&ved=0ahUKEwiym_-prLDoAhUQz4UKHffFAsoQ4dUDCAs






    https://pt.aliexpress.com/item/32993733756.html?src=google&src=google&albch=shopping&acnt=494-037-6276&isdl=y&slnk=&plac=&mtctp=&albbt=Google_7_shopping&aff_platform=google&aff_short_key=UneMJZVf&&albagn=888888&albcp=9599411226&albag=98417023665&trgt=296904913880&crea=pt32993733756&netw=u&device=c&albpg=296904913880&albpd=pt32993733756&gclid=EAIaIQobChMIuZvL_ayw6AIVihnTCh27mg5bEAQYAiABEgJt-PD_BwE&gclsrc=aw.ds


We have motion-to --signal converter : Henry telegraph device ( + Morse-alphabet),but also static generator developped by Graham Bell.
Is this device not a signal-to-motion converter ? It seems !

[synchro1]

"When a permanent magnet is brought near to an electromagnet energized by AC,
the following things can happen (depending on magnitude of AC and inertia of permanent magnet):
If the frequency of AC is low it may be able to produce vibration in permanent magnet If the frequency of AC is high,
no vibration would be produced due to inertia of permanent magnet".

[kolbacict]

If the frequency of AC is low it may be able to produce vibration in permanent magnet If the frequency of AC is high,
no vibration would be produced due to inertia of permanent magnet".

I agree.
My coil is powered by a sine wave, approximately 80Hz.
https://youtu.be/X6143k9-epo