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 Nightingale Pledge: Nursing Ethics Oath. History. The Nightingale Pledge was used for the first time in the spring of 1893 by Detroitâs Harper Hospitalâs graduating class. However, since its inception more than 100 years ago, the Nightingale Pledge has been either dropped or altered by some medical institutes.