The article is posted. Use the last link with the word “archive” in it to bypass the paywall.
Are you sure it’s a 4T magnetic field?
The MRI machines in hospital are 1.5~3T and here is a 4T electromagnet 4 Tesla Magnet Facility
Certainly more than $2K
[quote=“Alpha, post:3, topic:9447”]
A Katalyst EMS suit runs $2,500+.
A year’s worth of Rapamycin can a run near that
Don’t know where you get RAPA from that costs $2500 per year but just got my shipment from Cachhela:
300 tables Acarbose 50MG $ 36 USD
Miglitol 50 mg - 300 tablets $ 66 USD
Shipping charges $ 40 USD
Total $ 322 USD
I get my Rapamycin in the US.
I haven’t had the time to vet procuring it from outside the US.
Yes I’m sure it’s 4Tesla. That field strength is AT the coil. 4 cm from the coil it’s 4 mTesla. It decays fast with distance so I keep it flush against my body whenever possible. And it’s POWERFUL—you can feel it all over.
MRI machines use actual static magnets and yes a magnet so strong as to generate ~2 Tesla is staggering. I guess that’s because the principle of MRI machines is having a static magnetic field align electrons and protons then disturbing them out of alignment with radio frequency currents to get imaging. PEMF doesn’t use static magnets. It’s PULSED electro magnetic therapy.
They use electricity running through a coil to generate a magnetic field perpendicular to it. It’s simply physics, Faraday’s law. All it takes to generate 4T is enough electricity. Whereas an actual magnet that powerful would probably need to be made of rare earth materials.
This machine has a water system for circulating cool water inside so it doesn’t burn out because indeed it’s using a ton of electricity to yield that kind of field.
[comment edited to reflect my last min research into MRIs. I never even knew they used STATIC magnets, assumed it was electrically induced, live and learn!]
Thanks @medaura. (Extra characters)
How are people thinking about unknowns for the electro-magnetic fields here, especially potential risks of cancer perhaps?
The Cool Mitt looks very interesting, does anyone have any thoughts or experience with something like that?
Their research (https://archive.ph/o/kjZjx/https://journals.lww.com/nsca-jscr/Fulltext/2012/09000/Work_Volume_and_Strength_Training_Responses_to.33.aspx) showed that by precisely controlling core temperature, such mittens could significantly increase strength and endurance.
Arteria Technology now sells the gloves known as CoolMitt at $1,500, marketing them to athletes looking to boost performance as well as people who work in extreme heat.
“More studies need to be done on the potential cognitive benefits of cold exposure, such as improved mood and attention, says Guseh of Mass General Brigham, but science backs physiological benefits. Cold is a stressor, he says.”
Exposing the body to frigid temperatures for short periods of time is like microdosing on stress, he says. “If you can adapt the way you handle stress you may be able to develop resiliency to defend against daily stressors that lead to disease.”
I’ve personally thought about it, as PEMF uses part of the spectrum of EMF radiation. The main difference is that EMF from wifi, my phone, appliances etc. has much much higher frequencies and it’s at those frequencies (megahertz) that it gets captured / absorbed by tissue, generating thermal effects that can have negative downstream consequences. Low frequencies used in PEMF are between single digit hertz up to 100-200 hertz. At those low frequencies the waves go THROUGH the body but don’t get absorbed. They don’t generate any thermal effects. They only send specific signals to the cells. So far all the research I’ve seen points to their propensity to leave normal cells alone but induce apoptosis in cancer cells. You can look up Tumor Treating Fields. Even at higher frequencies with thermal effects (but still in the kilo, not megahertz range), brief, acute, periodic exposure seems to kill cancer cells while leaving normal cells alone.
Thank you for this @medaura very helpful to help me get my head around this.
I know little about magnetic strength, but I have a feeling that 4 T is pretty strong. Wikipedia says that 1.5T is
Is the Telsa range linear, so 4 T is a bit stronger than 1.5 T (vs log, like dB)?
It’s linear strength, they’re units. I think what’s hard to get one’s mind wrapped around is the STATIC magnetic field strength generated by a rare earth material like that — very hard to find such powerful magnets in nature — and the magnetic field that’s generated as a twin or byproduct of ELECTRIC fields. I remember this from middle school physics, Faraday’s law, with the right hand. If the fingers are arched like the electric field, the thumb will stick out in the direction of the magnetic field. It’s an artificially generated field. As soon as the power cord is unplugged the magnetism disappears. A rare earth static magnet is always a magnet. It’s inherently a magnet due to the way its atoms are constituted, their atomic number and how the electrons of the outer shells have organized themselves into a lattice or something like that. A 4T magnetic field induced via electricity is powerful, that’s why I paid something like $2K to get my hands on one. But it’s not even in the same ballpark of availability as rare earth materials. The latter is a very precious commodity. The former is just a function of electric field intensity. And yes I have to take off all metal when I use this machine. But the only way I can experience the full 4T is at max setting (it has an intensity dial, in %) and only if I stick my arm through the coil. I’d experience it in the cross section of my wrist that’s exactly perpendicular to the center or the coil. Otherwise even when I keep it flush to my body the coil itself is coated in a casing at least 2-3 cm thick so the nearest body part touching it is at least half as far as that from it. And the field loses intensity fast. That rare earth magnet can attach itself to the 9kg iron object and hold tight despite gravity only if it’s directly attached to it.
This sub topic of EMF really makes me want to run away. I’d need a lot of data to believe my Wi-Fi is harming me.
I’m really skeptical about that 4 Tesla claim.
4T is really huge. Assuming a 100 turns coil with a 300mm diameter you would need to push an electric current of 10500 Amps and 20110 Volts resulting in 105.6 MW of power pulsed at 1Hz.
Everybody can play with that Advance Magnetic Field Calculator and try various coils configurations.
BTW because these are magnetic fields and there is a large inductance, it’s not possible to pulse that rapidly either without using hundreds of thousands of volts. At 100Hz you would need 630MW of power.
Well in the absence of more concrete data I’ll hold off on the tinfoil hat myself
Whether our Wifi is harming us is one question, what type of frequency it runs on is a fact. Those frequencies have thermal effects because they’re absorbed by biological tissues. Of course that’s also got to do with the intensity, which itself is a function of proximity. But I’ve seen the studies myself showing that biological tissues heat up from EMF emitted by everyday appliances — the most prominent example being the smart phone. Hence this nonsense re: iPhone 12’s “radiation” in the EU. Long term exposure to these fields might cause something, or nothing. Impossible to even run a double blind placebo controlled study so it’s anyone’s guess. What I’m trying to focus on here is that PEMF uses frequencies so low that even these “theoretical” concerns don’t really apply.
Clearly full of nerds in this forum, - me trying to read through the messages made my head spin. Keep it up, but I can’t follow any of this LOL
I think what’s hard to get one’s mind wrapped around is the STATIC magnetic field strength generated by a rare earth material like that — very hard to find such powerful magnets in nature — and the magnetic field that’s generated as a twin or byproduct of ELECTRIC fields.
So far as I know, the strength of a magnetic fields doesn’t depend on the source. It is easier to generate a strong field with electricity, yes, but the field is the same.
I remember this from middle school physics, Faraday’s law, with the right hand. If the fingers are arched like the electric field, the thumb will stick out in the direction of the magnetic field.
Yes, physics is fun to understand.
As an electronics R&D engineer and physicist who has designed CT scanners and many medical sensors I get easily triggered by that kind of discussion (With the red light/IR topics too BTW)
red light I’ve been doing it for over year now. It helps with the skin and wounds; I can attest to that. Can’t say for other claims, i.e. couldn’t say if it works for inflammation or if it helps with joint pain.
I don’t know what’s so triggering for a physicist qua physicist in this discussion or the one re: IR / red light. I think you may think that I was being insufferable bringing up Faraday’s law and middle school physics but I was merely thinking out loud how it works, for my own sake, and not trying to talk down to anyone. I have no interest in d-measuring contests (d standing for degree of course ) but suffice it to say that I have continued taking physics classes for many years after middle school.
The truth is I found a better price for my device after buying it but I’m very happy with what it’s doing for me. If I can catch the manufacturer lying through his teeth about the specs by orders of magnitude and the 4Tesla at the coil turns out to be an “aspirational” number on their part, I think I can get my money back, return it, and buy it for even less. So maybe I’ll get an EMF meter and if you’re right I’ll eat humble pie. Hopefully the triggering discussion has morphed into a potentially pleasant one for you?