The strength of the sun's ultraviolet (UV) radiation is expressed as a Solar UV Index or Sun Index.The UV Index does not exceed 8 in the UK (8 is rare; 7 may occur on exceptional days, mostly in the ...
British engineer, born in Edinburgh, Scotland. In 1838 he joined with his father, Robert Stevenson, and his brother, David, in lighthouse construction, making a particular study of improving ...
Katabatic wind (from the Greek: katabaino - to go down) is the generic term for downslope winds flowing from high elevations of mountains, plateaus, and hills down their slopes to the valleys or ...