Elements of physics or natural philosophy, general and medical : written for universal use ... / by Neil Arnott.
- Neil Arnott
- Date:
- 1833
Licence: Public Domain Mark
Credit: Elements of physics or natural philosophy, general and medical : written for universal use ... / by Neil Arnott. Source: Wellcome Collection.
13/344 page 5
![SUBSTANCE. minds have taken in pursuing the investigation. To understand tiie subjects as far as men yet use- fully understand them, it is only necessary, as in other departments of science, to classify important phenomena, so that their relations may be clearly j)erceived. As when in treating of the human mind we s])eak of its retaining an idea, or being depressed, or being heated xvith passion, he., we speak of subjects sufficiently definite, although we may have no hypothesis as to the intimate nature of the phenomena ;—in the same manner may we speak of the accumulation, radiation, or other af- fections of heat and li^ht. We know nothimx of o o the cause even of ffravitv, the <^randest influence in nature, but we can calculate its effects with ad- mirable precision.](https://iiif.wellcomecollection.org/image/b28708398_0013.jp2/full/800%2C/0/default.jpg)
