Blue is the colour between violet and green on the optical spectrum of visible light. Human eyes perceive blue when observing light with a wavelength between 450 and 495 nanometres.
The United Kingdom is a Sovereign island country. It consists of 4 constituent countries, England, Northern Ireland, Scotland and Wales. Great Britain is the name of the island which consists of England, Scotland and Wales.The full name is the United Kingdom of Great Britain and Northern Ireland. The UK is part of the continent of Europe.he United Kingdom is a Sovereign island country. It consists of 4 constituent countries, England, Northern Ireland, Scotland and Wales. Great Britain is the name of the island which consists of England, Scotland and Wales.
Unlike the United Kingdom, Great Britain is a geographical term, not a political one, and it includes: England, Scotland, and Wales, but not Northern Ireland. Great Britain is the largest island of The British Isles.he United Kingdom is made up of several countries: England, Scotland, Wales, and Northern Ireland. Each is a sovereign nation. The U.K. is actually called the United Kingdom of Great Britain and Northern Ireland. Citizens of each U.K. country carries a British passport. There are all British citizens.