Seven Colours of the Rainbow

A rainbow is an optical phenomenon caused by refraction, internal reflection and dispersion of light in water droplets resulting in a continuous spectrum of light appearing in the sky.

The rainbow takes the form of a multicoloured circular arc.

Rainbows caused by sunlight always appear in the section of sky directly opposite the Sun.

Rainbows can be caused by many forms of airborne water.

These include not only rain, but also mist, spray, and airborne dew.

Jean-Léon Gérôme | La République, 1848 | Musée des Beaux-Arts de la Ville de Paris, Petit Palais

Eastman Johnson | Co-founder of the Metropolitan Museum of Art

Eastman Johnson (1824-1906) was an American painter and Co-Founder of the Metropolitan Museum of Art, New York City, with his name inscribed at its entrance.

Best known for his Genre paintings, paintings of scenes from everyday life, and his portraits both of everyday people, he also painted portraits of prominent Americans such as Abraham Lincoln, Nathaniel Hawthorne, Ralph Waldo Emerson and Henry Wadsworth Longfellow.

His later works often show the influence of the 17th-century Dutch masters whom he studied while living in The Hague, and he was even known as The American Rembrandt in his day.

Eberhard Keil | Pupil of Rembrandt

Eberhard Keil or Keyl dit Monsù Bernardo (1624-1687) was a Danish Baroque painter who became a pupil of Rembrandt.

Keil was born in Helsingør.

According to the RKD he was a pupil of the Danish painter Morten Steenwinkel, who became a pupil of Rembrandt in Amsterdam in the years 1642-1644.

Guy Hoff (1889-1962)

Born in Rochester, New York and trained at the Art School of the Albright Gallery in Buffalo and the Art Students League in New York City, Guy Hoff (1889-1962) is known for his cover pages for The Saturday Evening Post, McCall's and Ladies Home, among others, which often star young, beautiful women.

Guy Hoff is among the American painters who also used their talent to design illustrations for books, magazines and newspapers during the so-called 'Golden Age of American Illustration'.

Konstantin Razumov, 1974 | Children's world

Konstantín Rázumov (Константин Разумов) is a Russian painter with a realistic-impressionistic tendency.

He began his studies in art and painting in the studio Ilyá Glazunov at the Academy of Fine Arts in Moscow.

Razúmov is faithful to early Impressionism; however, he adds some modern touches, which are most evident in his beautiful, charming, soft and sensual figures.