Sleep tests being carried out by The US Testing Company under supervision of psychologists and physiologists. Heart beat, blood pressure and brain...精神科醫生, 僅一名女人, 睡覺
Engraving depicting Leitner of Vienna's 'Steam Spray'. This supplanted his 'Donkey Engine' spray and could fill a room with steam and carbolic acid...
Engraving depicting Leitner of Vienna's 'Donkey Engine', which produced a carbolic spray. This was superseded by the 'Steam Spray'. Dated 20th...
Woodcut engraving of an anatomy lecture at Padua. The professor remains in his chair reading from a book, while a demonstrator points out the...大約15世紀
Engraving depicting Stephen Hales' experiment to demonstrate circulation in plants. Hales placed the stem of a vine in a long tube and observed that...
Diagram illustrating RenŽ Descartes' idea of vision, showing the function of the eye, optic nerve, and brain. RenŽ Descartes a French philosopher,...想法
