"Whaam!" is a 1963 diptych painting by the American artist Roy Lichtenstein. It is one of the best-known works of pop art and among Lichtenstein's most important paintings.

"Whaam!" was first exhibited at the Leo Castelli Gallery in New York City in 1963 and purchased by the Tate Gallery, London, in 1966. It has been on permanent display at Tate Modern since 2006.

The left-hand panel shows a fighter plane firing a rocket that, in the right-hand panel, hits a second plane which explodes in flames.

"Whaam!" is regarded for the temporal, spatial and psychological integration of its two panels. The painting's title is integral to the action and impact of the painting and displayed in large onomatopoeia in the right panel.

Roy Fox Lichtenstein was an American pop artist. During the 1960s, along with Andy Warhol, Jasper Johns, and James Rosenquist among others, he became a leading figure in the new art movement.

His work defined the premise of pop art through parody. Inspired by the comic strip, Lichtenstein produced precise compositions that documented while they parodied, often in a tongue-in-cheek manner. His work was influenced by popular advertising and the comic book style. He described pop art as "not 'American' painting but actually industrial painting".

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