How does the subject matter of "Whirlpool" relate to the printing technique used?

It deals with water currents, reflecting the behavior of water and oil

Answer: It deals with water currents, reflecting the behavior of water and oil
The subject matter of "Whirlpool" deals with water currents, and the printing technique is based on understanding how water and oil behave with each other.

Whirlpool was a print made by India’s celebrated printmaker Krishna Reddy in 1963. It is a captivating composition created out of various shades of blues. Each colour blends into the other to create a powerful web of design. It is the result of a new technique in printmaking that he developed along with a well-known printmaker, Stanley William Hayter, in the famous studio called ‘Atelier 17’. This method came to be known as ‘viscosity printing’, in which different colours are applied on the same metal printing plate. Each colour is mixed with linseed oil in varied concentration to ensure that colours do not run into each other. The print’s subject matter, dealing with water current, aptly captures the technique based on understanding how water and oil behave with each other. This celebrated print is in the collection of the Metropolitan Museum of Art in New York, USA