Would a frog be able to withstand a strong magnetic field without harm?

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Discussion Overview

The discussion revolves around the effects of strong magnetic fields, specifically in the context of a frog being levitated in such fields. Participants explore the implications for the frog's nervous system and brain functions, questioning whether it can withstand high magnetic fields without harm. The scope includes theoretical considerations, biological responses, and experimental observations.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants question how the frog could remain alive while being levitated in a strong magnetic field, suggesting concerns about potential disruptions to its nervous system and brain functions.
  • Others note that the frog appeared to move and felt fine during the levitation, implying it may not have suffered harm.
  • One participant mentions that neuroscientists use magnets up to 7 Tesla on animals without harm, suggesting that the orientation of the magnetic field might influence its effects on neural activity.
  • Another participant argues that if there is no magnetic flux, the frog would not experience electrical interference, indicating it could be safe in a stationary magnetic field.
  • There is a mention of transcranial magnetic stimulation (TMS) as a method that can disrupt brain activity, raising questions about the conditions under which magnetic fields might affect neural functions.
  • Concerns are raised about the validity of certain magnetic therapies, with one participant asserting that claims made by such products are misleading.

Areas of Agreement / Disagreement

Participants express differing views on the safety of the frog in a strong magnetic field, with some suggesting it could be unharmed while others raise concerns about potential effects on its nervous system. The discussion remains unresolved regarding the specific impacts of strong magnetic fields on living organisms.

Contextual Notes

Participants reference various conditions under which magnetic fields might affect biological systems, including the orientation of the field and the presence of magnetic flux. There is no consensus on the implications for the frog's health or the mechanisms involved.

drag
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Greetings !

Some time ago I read about all those experiments
when they used very powerful magnetic fields
on the order of 10 Tesla (10^5 Gauss) and
above to make stuff levitate. I also
saw a picture of a levitating frog.
My question is - how come that frog stayed
alive ? Wouldn't such a powerful magnetic
field totally disrupt its entire nerveous system
and brain functions ?

Live long and prosper.
 
Biology news on Phys.org
Just a question:
How did you know it was alive ?
 
Originally posted by STAii
Just a question:
How did you know it was alive ?
It moved while being levitated and they
say it felt quite "fine" after that experience. :smile:
 
i remember seeing the same thing done with a spider. it moved around and everything while they did it
 
HM...Why do magnetic fields affect these animals? Can a strong enough magnetic field levitate anything?
 
Diamagnetic levitation.

http://www.physics.ucla.edu/marty/diamag/

Note that this magnetic replusion acts at the atomic scale. Since each atom is acted on by a nearly identical force, the frog feels like it is in free fall.
 
Originally posted by Janus
Note that this magnetic replusion acts at the atomic scale. Since each atom is acted on by a nearly identical force, the frog feels like it is in free fall.
Yes, but what about the nerve system and the
brain (based upon electrical signal exchange) ?
No damage ?

Live long and prosper.
 
neuroscientist uses up to 7Tesla imaging magnets on animals, 3T on people and that does nothing to you.

but also we can use magnets to disrupt certain areas of the brain.it's called transcranial magnetic stimulation(TMS). it's relatively new but I'm pretty sure does not use that many Teslas.

so i think that maybe the orientation of the field may matter in terms of disrupting neural activity. actually I'm pretty sure it does. in TMS you can change the orietation of the field and the effect will go away.
 
If there is no magnetic flux (either by fast movement through the magnetic field, or by rapidly altering the strength of the field), there will be no effect of electrical interferance.

In this case the magnetic field is stationary, and the frog is not moving through enough of a magnetic field gradient to cause electrical induction interference, so he is completely fine.

There are plenty of 'magnetic' therapies products on the market, those employing permanent magnets are completely ridiculous, preying on ignorance and stupidity, and if they are making any claim at all, it is a complete lie.

However, a pulsed magnet does have an effect on central nervous systems, and people are working on how to apply this in a benificial way.
 

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