science, history of — Introduction the history of science from its beginnings in prehistoric times to the 20th century. On the simplest level, science is knowledge of the world of nature. There are many regularities in nature that mankind has had to… … Universalium
Solar sail — Solar sails (also called light sails or photon sails, especially when they use light sources other than the Sun) are a proposed form of spacecraft propulsion using large membrane mirrors. Radiation pressure is about 10 5 Pa at Earth s distance… … Wikipedia
Solar variation — Solar variations are changes in the amount of solar radiation emitted by the Sun. There are periodic components to these variations, the principal one being the 11 year solar cycle (or sunspot cycle), as well as aperiodic fluctuations. Solar… … Wikipedia
Solar energy — is the light and radiant heat from the Sun that powers Earth s climate and weather and sustains life. Since ancient times it has been harnessed for human use through a range of technologies. Solar radiation along with secondary solar resources… … Wikipedia
Solar hot water — is water heated by the use of solar energy. Solar heating systems are generally composed of solar thermal collectors, a fluid system to move the heat from the collector to its point of usage. The system may use electricity for pumping the fluid,… … Wikipedia
Solar water disinfection — Solar water disinfection, also known as SODIS [ [http://www.sodis.ch sodis.ch] ] is a method of disinfecting water using only sunlight and plastic PET bottles. SODIS is a cheap and effective method for decentralized water treatment, usually… … Wikipedia
Solar Orbiter — Caractéristiques Organisation ESA Domaine Observation du Soleil Type de mission orbiteur Masse 1 666 kg Lancement 2017 … Wikipédia en Français
Science and technology in the People's Republic of China — has been growing rapidly. As China develops and becomes more connected to the global economy, the government has placed a stronger emphasis on science and technology as an integral part of the socio economic development of the country. This has… … Wikipedia
Solar power in the United States — is the largest available energy source for the United States, although in 2006 it accounted for less than 0.1% of electricity generation. Renewable resources (solar, wind, geothermal, hydroelectric, biomass, and waste) provided nearly 12 percent… … Wikipedia
Solar Probe Plus — Artist s concept of NASA s Solar Probe Plus Operator NASA / Applied Physics Laboratory Mission type Orbiter … Wikipedia