UK Citizenship Practice Test

The development of radar technology is primarily credited to Sir Robert Watson-Watt, a Scottish physicist and engineer. His significant contributions in the 1930s led to the practical application of radar in detecting aircraft, which became crucial during World War II. Watson-Watt's work involved the development of a system that could detect the presence of enemy planes from a distance, effectively changing the landscape of military defense.

The other figures mentioned had important roles in physics but did not directly contribute to radar technology. Albert Einstein is well-known for his theories of relativity, while Isaac Newton is celebrated for his laws of motion and universal gravitation. James Clerk Maxwell made foundational contributions to electromagnetic theory, which laid some groundwork for radar, but it was Watson-Watt who specifically developed radar for practical use. Therefore, Sir Robert Watson-Watt stands out as the key figure in the advancement of radar technology.