See Humanterm: https://humantermuem.es/content/doppler-effect/?lang=en

See Humanterm: https://humantermuem.es/drone

GC: n CT: A dynamical system consists of an abstract phase space or state space, whose coordinates describe the state at any instant, and a dynamical rule that specifies the immediate future of all state variables, given only the present values of those same state variables. For example the state

GC: n CT: Evidence for early agriculture can be obtained from pollen profiles indicating forest clearance. The practice of cultivation is widely believed to have been introduced into the interlacustrine region of central Africa by Bantu-speaking iron-workers, present by 2,000 yr BP (ref. 3) or, disputedly, 2,600 yr BP (ref.

GC: n CT: Automation is still a nascent technology in areas that could potentially revolutionise our professional and private lives in dramatic ways. Innovations in home automation, for example, could allow us to use time and resources more efficiently as all electrical appliances and electronic devices will be fully integrated

GC: n CT: Nitrogen dioxide (NO2) is one of the nitrogen oxides (NOx), a group of air pollutants produced from combustion processes. In urban outdoor air, the presence of NO2 is mainly due to traffic. Nitric oxide (NO), which is emitted by motor vehicles or other combustion processes, combines with

GC: n CT: Emissionsof sulfur dioxide (SO2) and nitrogen oxides (NOx) from the electric power sector in 2012 declined to their lowest level since the passage of the Clean Air Act Amendments of 1990. The decline in emissions is due primarily to an increasing number of coal-fired units retrofitted with

GC: n CT: Wood is considered humankind’s very first source of energy. Today it still is the most important single source of renewable energy providing over 9% of the global total primary energy supply. Wood energy is as important as all other renewable energy sources altogether (hydro, geothermal, wastes, biogas,