The object
J. Roger P. Angel invented lightweight honeycomb mirrors that make very large telescope optics practical without the mass and distortion of solid glass. The structured mirrors can be cast and polished into precise reflective surfaces for powerful ground-based astronomical instruments.
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What J. did
Invented lightweight honeycomb mirror technology for large astronomical telescopes.
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Why it matters
Angel’s mirror technology enabled major large-aperture observatories.
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Living-status check
The University of Arizona’s 2024–26 teaching profile lists Angel leading graduate thesis and directed-research courses, direct evidence of current academic activity.