Popular SciencePopular Science gives our readers the information and tools to improve
their technology and their world. The core belief that Popular
Science and our readers share: The future is going to be better, and
science and technology are the driving forces that will help make it
better. |
Common terms and phrases
acid action of light altitude animals anthropometric aphids Art of Travel astronomy atmosphere atomic biologists biology body carbonic acid cells chemical reactions classification Composite photography Comte copepods Darwin develop direction dysentery E. E. Barnard earth electric current evolution experiments fact finger prints flies forces Francis Galton galvanotropism gas phosphorescence geotropic helio heliotropic reactions heliotropic sensitiveness heredity house fly influence insects instance intellectual intensity of light interest investigators knowledge laboratory large number larvae laws living mass matter means ment metaphysics meteor train methods miles mind moral movement museum natural needs nerve November 14 nuptial flight Observatory observed organisms otoliths Perseid persistent train phosphorescence photochemical photosensitive plants positively heliotropic present produced Professor psychology retina scholarship scientific sense shown side small college social sociology source of light substance surface symmetrical teacher theory things tion TRAIN SEEN tropic tropisms typhoid zoology