Ivan Kminek
Muse
- Joined
- Jun 15, 2011
- Messages
- 906
...And yet one more remark for the Ryan's (or Harrit's?) FTIR spectrum, which is again here:
It seems to be quite obvious, why Ryan chose to present this spectrum taken on "singed-like" (dark?) side of the red layer of this chip: it somehow resembles included Gash' spectrum recorded on real sol-gel nanothermite.
The region above 2800 cm-1 does not frequently say a lot, many materials/polymers which contain hydroxyls/are hygroscopic/contain water etc. have such FTIR bands there, the region below ca 1000 cm-1 is unreadable, but still, in both spectra, they are two bands at similar positions: at ca 1300 cm-1 and at ca 1600 cm-1 (I am lazy to analyze it more precisely using some graphic program).
It is indeed the full right of any author to present any such a comparison as a kind of proof, and Jim Millette did not do anything else with his spectra of epoxy resin and red WTC chip - besides the fact that much more bands coincided in his comparison.
Comparison of just two bands does not really say a lot, and this is why I presented as some "funny illustration" above another comparison, namely with FTIR of soot, which works "as well as" comparison with superthermite
)
As I wrote to Ziggi: "Based on this spectra, I do not insist that Ryan recorded soot, you should not insist that he recorded superthermite." And Ziggi basically agreed
(Gash himself in the relevant paper wrote: "the absorption at 1630 cm-' is likely due to the bending mode of water.... absorptions present from 1400-800 cm-' (including this one at ca 1300, I.K.) are probably due to ethanol (solvent used), residual propylene oxide, or side products of the ring opening of the propylene oxide)". )
It seems to be quite obvious, why Ryan chose to present this spectrum taken on "singed-like" (dark?) side of the red layer of this chip: it somehow resembles included Gash' spectrum recorded on real sol-gel nanothermite.
The region above 2800 cm-1 does not frequently say a lot, many materials/polymers which contain hydroxyls/are hygroscopic/contain water etc. have such FTIR bands there, the region below ca 1000 cm-1 is unreadable, but still, in both spectra, they are two bands at similar positions: at ca 1300 cm-1 and at ca 1600 cm-1 (I am lazy to analyze it more precisely using some graphic program).
It is indeed the full right of any author to present any such a comparison as a kind of proof, and Jim Millette did not do anything else with his spectra of epoxy resin and red WTC chip - besides the fact that much more bands coincided in his comparison.
Comparison of just two bands does not really say a lot, and this is why I presented as some "funny illustration" above another comparison, namely with FTIR of soot, which works "as well as" comparison with superthermite
As I wrote to Ziggi: "Based on this spectra, I do not insist that Ryan recorded soot, you should not insist that he recorded superthermite." And Ziggi basically agreed
(Gash himself in the relevant paper wrote: "the absorption at 1630 cm-' is likely due to the bending mode of water.... absorptions present from 1400-800 cm-' (including this one at ca 1300, I.K.) are probably due to ethanol (solvent used), residual propylene oxide, or side products of the ring opening of the propylene oxide)". )
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