perpetual motion
121gas — gasless, adj. /gas/, n., pl. gases, v., gassed, gassing. n. 1. Physics. a substance possessing perfect molecular mobility and the property of indefinite expansion, as opposed to a solid or liquid. 2. any such fluid or mixture of fluids. 3. any… …
122Heat capacity — Thermodynamics …
123Henri Poincaré — Infobox Scientist box width = 300px name = Henri Poincaré image size = 250px caption = Jules Henri Poincaré (1854 1912). Photograph from the frontispiece of the 1913 edition of Last Thoughts. birth date = birth date|df=yes|1854|4|29 birth place …
124History of electromagnetism — The history of electromagnetism, that is the human understanding and recorded use of electromagnetic forces, dates back over two thousand years ago, see Timeline of electromagnetism. The ancients must have been acquainted with the effects of… …
125Swastika — This article is about the symbol. For the town, see Swastika, Ontario. The counter clock swastika to evoke shakti in the decorative Hindu form …
126Rattleback — A rattleback, also known as an anagyre , celt , Celtic stone , rebellious celt , rattlerock , spin bar , wobble stone or wobblestone and by the product names ARK, Bizzaro Swirls, RATTLEBACKS, Space Pet and Space Toy, is a semi ellipsoidal top… …
127Descartes: methodology — Stephen Gaukroger INTRODUCTION The seventeenth century is often referred to as the century of the Scientific Revolution, a time of fundamental scientific change in which traditional theories were either replaced by new ones or radically… …
128Quaestiones quaedam philosophicae — ( Certain philosophical questions ) is the name given to a set of notes that Isaac Newton kept for himself during his early years in Cambridge. They concern questions in the natural philosophy of the day that interested him. Apart from the light… …
