..."1 Following a little over five years of scientific research on light distribution, heat transfer and refraction a prototype of the future PH Lamp with its characteristic three concentric shades won a Gold Medal at the 1925 Paris Exposition, in 1926 the first genre re-defining PH Lamps were produced as part of a commission for the new Forum Centre in Copenhagen, by 1929 Louis Poulsen were distributing the table, hanging and wall versions of the PH Lamp in four continents, in 1930 Mies van der Rohe used them in his Villa Tugendhat in Brno... In the course of his career Poul Henningsen developed some 100 light designs for Louis Poulsen, in addition to the original PH Lamp the most famous examples being without question the PH 5, PH Snowball, PH Charlottenborg and of course the PH Kogle - the Artichoke Lamp...