Photovoltaic devices generate electricity directly from solar radiation, which is abundant and freely accessible, offering the potential for renewable power on a vast scale. Worldwide photovoltaic ...

The film "The Colloidal State" explores the concept of colloids, which are materials in a dispersion where small particles of one substance are distributed throughout another. It distinguishes ...

Based on: Colloidal State and Its Medical and Physiological Aspects. By Sir William Bayliss. Oxford Medical Publications. London: Henry Frowde and Hodder and Stoughton, 95 pages. Price, $2.15. Select ...

Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...