Kia Orana and Welcome to our website! The Cook Islands Meteorological Service is a division of the Ministry of Transport. It is dedicated in providing you with the latest weather updates, forecasts and warnings for the Cook Islands. Since that first rainfall observation in 1899 in Rarotonga, more observations are now made so as to guide us to see what will happen tomorrow.
Definition of disallow. 1  transitive verb. 2  1 : to deny the force, truth, or validity of. 3  2 : to refuse to allow.
Dispersion. Chromatic dispersion is the change of index of refraction with wavelength. Generally the index decreases as wavelength increases, blue light traveling more slowly in the material than red light. Dispersion is the phenomenon which gives you the separation of colors in a prism.