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.'
HomeÂ» The History and Meaning of The Pledge of Allegiance. For over 100 years, American children have spoken the words of the Pledge in schools, homes, churches, and many other places to show respect and love for the American flag. Itâs also said by Congress and other parts of the government to begin their meetings, and by other groups all over the country: