可 觀 自 然 教 育 中 心 暨 天 文 館許 浩 強
Paper Plate Educationhttp://analyzer.depaul.edu/paperplate/
Pattern on a paper plate
目視用太陽濾光片
可過濾至少 99.999% 的光
• 針孔投影法
安全的觀測方法 - 投影法
針孔投影法
利用平面鏡作針孔投影
太陽投影儀
望遠鏡太陽投影法
望遠鏡太陽目視法
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