Leibniz's Observations on Hydrology: An Unpublished Letter on the Great Lombardy Flood of 1705 [0.03%]
莱布尼茨的水文学观察：一封关于1705年伦巴第大洪水的未刊书信
Lloyd Strickland,Michael Church
Lloyd Strickland
Although the historical reputation of Gottfried Wilhelm Leibniz (1646-1716) largely rests on his philosophical and mathematical work, it is widely known that he made important contributions to many of the emerging but still inchoate branche...
Chemistry, microscopy and smell: bloodstains and nineteenth-century legal medicine [0.03%]
化学、显微镜和嗅觉：血迹与19世纪法医学
José Ramón Bertomeu-Sánchez
José Ramón Bertomeu-Sánchez
This paper analyses the development of three methods for detecting bloodstains during the first half of the nineteenth-century in France. After dealing with the main problems in detecting bloodstains, the paper describes the chemical tests ...
Roland Jackson
Roland Jackson
John Tyndall, Irish-born natural philosopher, completed his PhD at the University of Marburg in 1850 while starting his first substantial period of research into the phenomenon of diamagnetism. This paper provides a detailed analysis and ev...
'Land-marks of the universe': John Herschel against the background of positional astronomy [0.03%]
“宇宙地标”约翰·赫歇尔与天体测量学背景
Stephen Case
Stephen Case
John Herschel (1792-1871) was the leading British natural philosopher of the nineteenth century, widely known and regarded for his work in philosophy, optics and chemistry as well as his important research and popular publications on astron...
Victor D Boantza
Victor D Boantza
Pursuing frequency standards and control: the invention of quartz clock technologies [0.03%]
追求频率标准与控制——石英钟技术的发明
Shaul Katzir
Shaul Katzir
The quartz clock, the first to replace the pendulum as the time standard and later a ubiquitous and highly influential technology, originated in research on means for determining frequency for the needs of telecommunication and the interest...