Observations at high resolution on several indanthrene dyes
Philosophy and politics are not alone in moving with a rhythm that is dialectic. The development of modern physics has been marked by advances in experiment and in theory which subsequently have interacted to establish a new base for further growth. The instrumentation of physics, too, has frequently evolved in this fashion. Our electron microscopy for instance has involved the production of instruments whose potentialities could only be realized through the development of better specimens which in the end have required improved microscopes for their adequate study. At the moment we are in that phase of this cycle where attainable resolving power is so high that we are being hard-pressed to find preparations really worth looking at these maximal resolutions.
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