SWhat changed
Instead of slowly scanning one resonance frequency at a time, Ernst and Anderson applied short radio-frequency pulses, recorded the combined time response and used a Fourier transform to recover the spectrum. Their 1966 magnetic-resonance paper combines a pulse-response model, coherent accumulation, filtering, numerical processing and an experimental comparison. It demonstrates a practical sensitivity and recording-time advantage under the stated conditions, rather than claiming that a Fourier transform alone improves every noisy measurement.
Scientific scope
Instead of slowly scanning one resonance frequency at a time, Ernst and Anderson applied short radio-frequency pulses, recorded the combined time response and used a Fourier transform to recover the spectrum. Their 1966 magnetic-resonance paper combines a pulse-response model, coherent accumulation, filtering, numerical processing and an experimental comparison. It demonstrates a practical sensitivity and recording-time advantage under the stated conditions, rather than claiming that a Fourier transform alone improves every noisy measurement. This is a physical spectroscopy-method contribution, not invention of the Fourier transform, the first nuclear resonance, the first echo, arbitrary sample imaging or a biological/medical result. Sensitivity advantage depends on spectral-width/linewidth ratio, relaxation times, pulse spacing, coherent stability, detector-noise and comparison protocol. The 8.5-fold ethylbenzene improvement is the authors' time-normalized comparison, not the raw same-duration signal ratio; the displayed spectra use 25 s pulse acquisition versus 350 s sweep acquisition. Theoretical derivation assumes stationary white noise and states why the advantage can shrink against intermediate-passage sweeps. Finite acquisition, aliasing, pulse perturbation and phase/filter correction matter; interpolating a truncated response does not create unrestricted resolution.
Evidence
The linked original works support the scoped statement and contribution attribution. WRS has not independently replayed experiments or reconstructed a full mathematical proof. This is a physical spectroscopy-method contribution, not invention of the Fourier transform, the first nuclear resonance, the first echo, arbitrary sample imaging or a biological/medical result. Sensitivity advantage depends on spectral-width/linewidth ratio, relaxation times, pulse spacing, coherent stability, detector-noise and comparison protocol. The 8.5-fold ethylbenzene improvement is the authors' time-normalized comparison, not the raw same-duration signal ratio; the displayed spectra use 25 s pulse acquisition versus 350 s sweep acquisition. Theoretical derivation assumes stationary white noise and states why the advantage can shrink against intermediate-passage sweeps. Finite acquisition, aliasing, pulse perturbation and phase/filter correction matter; interpolating a truncated response does not create unrestricted resolution.
Contributors
- The named authors in the research record · SCIENCE: Source-listed authors for the exact contribution; experimental subjects are not autonomous scientific authors. Source support and predecessor work retain separate roles. Individual effort shares and unresolved identities are not inferred.
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