Thâu-ia̍h
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chhiat-oāⁿ Thâu-ia̍h (Pe̍h-oē-jī) — 頭頁 (漢字) 切換
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今仔日的圖相
Flowering trees at the bottom of the Eiffel Tower in Paris (France). Today is the March equinox, which marks the beginning of astronomical spring in the Northern Hemisphere.
今仔日的影片
An experiment showing burning of sulfur in oxygen. A flow-chamber joined to gas washing-bottle (filled with solution of methyl orange) is being used. The product is sulfur dioxide (SO2) with some traces of sulfur trioxide (SO3). The 'smoke' that exits the gas-washing bottle is, in fact, a sulfuric acid fog generated in a reaction represented by:
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照主題自然 社會 · 文化 科學 工程 照地點宇宙 照分類圖相 照創作者照授權版權授權方式 照來源仝這日的圖相 |
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