オゾンを含める空氣を銀粉上に通じたるに全く黒き物質に變ぜり。此黒粉少許を鹽酸と共に温めたる後アムモニア水の過剰を加へたるに透明に溶解せり)。又此黒粉を稍強く熱したるに87％の銀を殘留せり。2019.04.12記1916年(大正5年)東京帝國大學理學部(化學科)…

The world little knows how many of the thoughts and theories which have passed through the mind of the scientific investigator have been crushed in silence and secrecy by his own severe criticism and adverse examination; that in the most s…

The sun’s rays are the ultimate source of almost every motion which takes place on the surface of the earth. By its heat are produced all winds, and those disturbances in the electric equilibrium of the atmosphere which give rise to the ph…