Optics: : [op-tiks] - noun. A branch of physics that studies electromagnetic radiation (for example, light and infrared radiation), its interactions with matter, and instruments used to gather information due to these interactions.Optics includes the study of sight. branch of physics that studies electromagnetic radiation (for example, light and infrared radiation), its interactions with matter, and instruments used to gather information due to these interactions.
By 1924, the National Flag Conference, under the leadership of the American Legion and the Daughters of the American Revolution, changed the Pledge's words, 'my Flag,' to 'the Flag of the United States of America.'
The Sussex Pledge was a promise given by the German Government to the United States of America on May 4th 1916 in response to US demands relating to the conduct of the First World War.t's a huge understatement to say Germany didn't want America to enter the war on the side of her enemies, and the 'breaking off' of diplomatic relations was a step in this direction. Germany thus responded on May 4th with a pledge, named after the steamer Sussex, promising a change in policy.