no, it's diffraction
DiFFRACTiON
Diffraction
wavelength and diameter of aperture.
diffraction
This is a spreading out of a wave around corners or through holes.
To avoid having bacteria spreading around and to avoid spreading diseases
Diffraction
Cholera.
I am not sure where you hometown is as you did not specify. However, you can always check medical facilities around your city for openings as that's where they are generally located at.
the sea floor is spreading about 3cm every year answers will vary but it is usually around 3cm
Typical rates of spreading average around 5 centimeter (2 inches) per year.
by spreading around the world