An imaginary line that separates the Eastern and Western hemispheres which has shifted over time.
Prime Meridian
A type of distribution that develops along routes like a river or a road.
Linear
An imaginary line that separates the Northern and Southern hemispheres; has never changed.
Equator
Something is spread from people of authority to others.
What is hierarchical diffusion?
The spread of an underlying principle/idea/concept (ex: pineapple on pizza)
What is stimulus diffusion?
What is Baron Hratch's lucky number
31
What is the basic formula for gas diffusion in chemistry?
∂u/∂t = D∇²u, where u is the density of the gas, t is time, D is the diffusion coefficient, and ∇² is the Laplacian operator.