写真
John Archibald Wheeler teaching at chalkboard
@sur_27さんの写真· Jun 16, 2026· Science
この写真について
An older man in a dark suit and tie stands before a large chalkboard, pointing directly at a complex geometric diagram with chalk in hand. He appears mid-lecture, mouth slightly open and gaze focused forward. The black-and-white photo has a classic academic, documentary style with high contrast. His extended right hand and the detailed chalk drawing of intersecting curves dominate the frame.
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