Convention relating to the Status of Stateless Persons the Convention, doing so on 27 September 2018. Madagascar denounced its accession made in 1962, effective 2 April 1966. The United Kingdom extended the convention to British Hong Kong, and China has declared that the convention continues to apply to Hong Kong post-1997. Convention relating to the Status of Stateless Persons The Convention relating to the Status of Stateless Persons is a 1954 United Nations multilateral treaty that aims to protect stateless individuals. The United Nations Charter and Universal Declaration of Human Rights were approved on 10 December 1948. Of significance, the Declaration at Article 15 affirms that: The Convention
Sapphire sapphire was 250 tons (1.25 × 10 carats), mostly by the United States and Russia. The availability of cheap synthetic sapphire unlocked many industrial uses for this unique material. The first laser was made with a rod of synthetic ruby. Titanium-sapphire lasers are popular due to their relatively rare capacity to be tuned to various wavelengths in the red and near-infrared region of the electromagnetic spectrum. They can also be easily mode-locked. In these lasers a synthetically produced sapphire crystal with chromium or titanium impurities is irradiated with intense light from a special lamp, or another laser, to create stimulated