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In cultural anthropology and cultural geography, cultural diffusion, as conceptualized by Leo Frobenius in his 1897/98 publication Der westafrikanische Kulturkreis, is the spread of cultural items—such as ideas, styles, religions, technologies, languages—between individuals, whether within a single culture or from one culture to another.
Spreading rate is the rate at which an ocean basin widens due to seafloor spreading. (The rate at which new oceanic lithosphere is added to each tectonic plate on either side of a mid-ocean ridge is the spreading half-rate and is equal to half of the spreading rate). Spreading rates determine if the ridge is fast, intermediate, or slow.
A typical suburban development in the United States, located in Chandler, Arizona An urban development in Palma, Mallorca. Urban sprawl (also known as suburban sprawl or urban encroachment) [1] is defined as "the spreading of urban developments (such as houses and shopping centers) on undeveloped land near a city".
Social contagion involves behaviour, emotions, or conditions spreading spontaneously through a group or network. The phenomenon has been discussed by social scientists since the late 19th century, although much work on the subject was based on unclear or even contradictory conceptions of what social contagion is, so exact definitions vary.
A Christian proselytizer trying to spread his faith in London, England, 1970. Proselytism (/ ˈ p r ɒ s əl ɪ t ɪ z əm /) is the policy of attempting to convert people's religious or political beliefs. [1] [2] [3] Carrying out attempts to instill beliefs can be called proselytization. [4]
The following video is part of our "Motley Fool Conversations" series, in which analyst John Reeves and advisor David Meier discuss topics across the investing world.We've been talking a lot ...
Moreover, for a given noise power spectral density (PSD), spread-spectrum systems require the same amount of energy per bit before spreading as narrowband systems and therefore the same amount of power if the bitrate before spreading is the same, but since the signal power is spread over a large bandwidth, the signal PSD is much lower — often ...
A chemistry professor explains the science that makes salt a cheap and efficient way to lower freezing temperature.