Poul Henningsen (9 September 1894 – 31 January 1967) was a Danish author, critic, architect, and designer. In Denmark, where he often is referred to simply as PH, he was one of the leading figures of the cultural life of Denmark between the World Wars. His novel works of Danish modern designs are featured in many museums. He is most commonly associated with his design of the PH-lamp series of incandescent lamps. .
Early life and education
Poul Henningsen was the fourth child of noted author Agnes Henningsen (1868–1962) through an extramarital relationship she had with satirist Carl Ewald (1856-1908) following her first marriage, that had ended in divorce. He and his three half-siblings spent a happy childhood in their mother's tolerant and modern home in Ordrup, that often was visited by the leading literates. Between 1911 and 1917, he was trained at Copenhagen Technical College and the Technical University of Denmark, where he studied to be an architect, but never graduated, choosing instead to follow a career as an inventor and painter. 
Architecture and design
He entered into with the architect Kay Fisker in 1919. From 1920, Poul Henningsen freelanced as an architect and designer. His most valuable contribution to design was in the field of glare-free illumination. Henningsen spent developing lighting that was not harsh and glaring but shed warm, soft light.
The first lamps in the "PH" range were shown at the International Exhibition of Modern Decorative and Industrial Arts at Paris in 1925. The PH-lamp which, like his later designs, used carefully analyzed reflecting and baffling of the light rays from the bulb to achieve glare-free and uniform illumination. His light fixtures were manufactured by Danish lighting manufacturer Louis Poulsen, a company with which Henningsen would build a lifelong working relationship. 
His best-known models are the PH Artichoke and PH5. The lamps created the economic foundation of his later work. Manufacture and sale of some of his lighting fixtures, such as the PH5 Pendant Lamp, continues today.
Other notable designs by him include the PH Grand Piano, examples of which are included in several prominent twentieth-century design collections, including that of the Metropolitan Museum in New York City. In 1946, he re-designed the Glass Hall (Glassalen) for Tivoli Gardens in Copenhagen. 
During the 1920s Poul Henningsen had his literary breakthrough. He edited the polemic left-wing periodical, Kritisk Revy (1926–1928, "Critical Review"), in which he and his colleagues scorned old-fashioned style and cultural conservatism, linking these themes to politics.
At the same time he began as a revue writer praising natural behaviour, sexual broad-mindedness, and simple living. He made the Danish revues a political weapon of the left-wing without giving up its character of entertainment (the so-called PH-revues 1929–32).
In 1933, he edited his most famous work, Hvad med Kulturen? ("What About Culture?"), a polemic, audacious, and urgent criticism of Danish cultural life and its snobism and passion of the past in spite of all the efforts of the Modern Break-Through. He tried to make parallels between prudery, moralizing, and fascist leanings. He also accused the Social Democrats of lacking a firm and consequent cultural line. Together with this book, his activities as a whole brought him a reputation as a semi-communist "fellow traveller". During this period, in fact, he stood near the communists without joining them. He took part in the anti-fascist propaganda, always trying to connect culture and politics. 
Poul Henningsen also had a large influence on the Danish company Bang & Olufsen (B&O). In 1954, he wrote a critical review in which he criticised B&O for mixing materials and style completely randomly like they had no idea of what design is. This review was the beginning of a change in product development at B&O where designers would be included in product design.
Among his other initiatives of this period was Danmarksfilmen (1935), (English: The Film of Denmark), also known as PH's Danmarksfilm. It is an unpretentious and untraditional film portraying life in contemporary Denmark in a lively and slightly disrespectful way in which the visuals are supported by jazz rhythms. Initially, it was condemned and decried by most critics, but later on it became rehabilitated as one of the classic Danish documentary films. He also wrote some movie manuscripts.
During World War II and the German Occupation of Denmark, he kept a low profile and fled to Sweden in 1943, but he tried to keep the spirit going by camouflaged resistance poetry. After the war he dissociated himself from the communists, who were criticizing him for humanitarianism in his attitude toward the settlement with the Nazis and for his growing skepticism about the Soviet Union, and in many ways, he was isolated. He kept writing and debating, however, and during the 1960s in many ways, the new generation made him something of a guru. In his last years he became a member of the Danish Academy and supported the new movement of consumers.
In many ways Poul Henningsen is the one who completed the work of Danish critic and scholar Georg Brandes (1842–1927). He was somewhat superficial and light, but more modern and less elitist in his views. Being a tease and a provoker who often tried turning concepts upside down (as George Bernard Shaw also did) and whose conclusions might be both somewhat unjust and exaggerated, he was however, a man of firm principles and ideals of a democratic, natural, and tolerant society.
- PH lamp (1925)
- PH Grand Piano and Pianette (1931)
- PH 7-point table lamp (1933)
- PH bedside lamp (1936)
- PH Artichoke (1958)
- PH5 Pendant (1958)
- PH Koglen (1958)
- "Poul Henningsen (1894-1967)". dr.dk. Retrieved 1 May 2019.
- "The PH lamp". Airport Magazine. Retrieved 1 May 2019.
- The Lights of Poul Henningsen, Phillips, 12 September 2016, retrieved 1 May 2019
- Marianne Zibrandtsen. "Agnes Henningsen (1868-1962)". Dansk Kvindebiografisk Leksikon. Retrieved 1 May 2019.
- "Poul Henningsen". henningsen-poul.com. Retrieved 1 May 2019.
- Chelsea Butkowski. "What lies beneath the PH Artichoke". Cooper Hewitt. Retrieved 1 May 2019.
- "Poul Henningsen". dwr.com. Retrieved 1 May 2019.
- "Louis Poulsen". Tagwerc. Retrieved 1 May 2019.
- "PH Artichoke". louispoulsen.com. Retrieved 1 May 2019.
- "PH Grand Piano". ToneArt. Retrieved 1 May 2019.
- "The Glass Hall Theatre". tivoligardens.com. Retrieved 1 May 2019.
- Fleming, John & Hugh Honour. (1977) The Penguin Dictionary of Decorative Arts. London: Allen Lane, p. 373. ISBN 0713909412
- Mark Mussari. "Poul Henningsen: Cubism and the Conscience of Modernism]". University of Illinois Press, Volume 85, Number 1, Spring 2013. pp. 79-98. Retrieved 1 May 2019.
- Carl Erik Bay. "Poul Henningsen". Dansk Biografisk Leksikon, Gyldendal. Retrieved 1 May 2019.
- "Georg Brandes, 1842-1927". Danmarks historien. Retrieved 1 May 2019.
- Paul Hammerich (1986) Lysmageren. En krønike om Poul Henningsen (Copenhagen: Aschehoug) ISBN 87-11-11078-3
|Wikimedia Commons has media related to Poul Henningsen.|
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- Poul Henningsen galllery
- Poul Henningsen lamps at Danish Furniture
- PH Grand Piano website
- Information and pictures about the designer Poul Henningsen at the design agency TAGWERC (in English)