What is the name given to the local dry wind in the Rocky Mountains?

Antarc­ti­ca is tech­ni­cal­ly a desert, av­er­ag­ing just 166 mm (6.5 in) of pre­cip­i­ta­tion per year. Only some fringe coastal areas have a tundra climate with a short summer av­er­ag­ing above freez­ing, and much higher pre­cip­i­ta­tion.

Iri­des­cence is the phe­nom­e­non of certain surfaces that appear to grad­u­al­ly change colour as the angle of view or the angle of il­lu­mi­na­tion changes. Examples of iri­des­cence include soap bubbles, but­ter­fly wings and sea shells, as well as certain min­er­al­s. It is often created by struc­tural col­oration (mi­crostruc­tures that in­ter­fere with light).

Stratus. The term stratus is used to describe flat, hazy, fea­ture­less clouds of low altitude varying in color from dark gray to nearly white. Stratus clouds may produce a light drizzle or a small amount of snow. These clouds are es­sen­tial­ly above-­ground fog formed either through the lifting of morning fog or through cold air moving at low al­ti­tudes over a region.

Nikola Tesla. Marconi was con­sid­ered to be the first radio con­struc­tor but in 1943 the US Supreme Court has granted Tesla patent rights. Marconi admitted he was using Tesla's work in his con­struc­tion.