High School Radio waves -- Tissue Refractive Index

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SUMMARY

The refractive index (RI) of tissue for radio waves in the frequency range of 1 Hz to 1 MHz is estimated to be between 3 and 10, with a typical value around 5. This RI is derived from the relative permittivity (Er) of the tissue, which varies significantly, typically ranging from 10 to 100. The velocity factor (vf) is calculated using the formula vf = 1 / √Er, and the RI is the reciprocal of this velocity factor. Understanding these values is crucial for applications involving electromagnetic waves and their interaction with biological tissues.

PREREQUISITES
  • Understanding of refractive index and its calculation
  • Knowledge of relative permittivity (Er) and its significance in tissue
  • Familiarity with electromagnetic wave propagation principles
  • Basic concepts of dielectric properties of biological tissues
NEXT STEPS
  • Research the dielectric properties of various biological tissues using resources like ITIS database
  • Learn about the impact of electromagnetic waves on biological systems
  • Explore the relationship between frequency and tissue interaction in electromagnetic applications
  • Investigate methods for measuring relative permittivity in biological samples
USEFUL FOR

Researchers in biomedical engineering, physicists studying electromagnetic interactions with biological tissues, and professionals involved in medical imaging technologies.

  • #31
I think it's got to be even harder than that.

First, DNA curls. So any "magic frequency" changes cell-by-cell depending on exactly how it's curled. Putting that aside, bacterial DNA looks like human DNA: the chemistry is the same. Only the content is different. You can't attack an A group to T group: you need a frequency that attacks the whole thing coherently. Figuring that out will be Real Doggone Hard, and building a transmitter that precise will be Real Doggone Hard.
 
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  • #32
@roxyboy
Target the molecular chemistry of the transcription process. That is the only time you will see the internal sequence of the DNA or RNA going past during replication. You need gene scissors, not a microwave oven.
 
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  • #33
Thread paused for a bit for Moderation...
 
  • #34
renormalize said:
The references cited are wholley inadequate to support your claims.
Agreed.

@roxyboy -- this thread will remain closed. If you have a valid reference that you want to ask questions about, start a new thread and post links for the reference and ask *specific* questions about that reference. Please avoid making assertions at PF that are not backed up by the mainstream scientific literature.
 
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