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日食针孔光机标记
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Published:
2026-01-19 03:33:34
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一个可以远离高对比度表面放置的针孔投影仪标识。通过它,你可以直观地看到日食阴影在透过孔洞的光线上,形成新月形的阴影轮廓。
星爆效果有点紧凑,需要稍微用点力。最佳焦点位置似乎离地面有一两英尺的距离。
类别:物理学与天文学
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