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.'
I Pledge Allegianceâ¦and Know What it Means 1. I Pledge Allegianceâ¦and Know What it Means. Overview: This lesson will allow students to look at the words they say every morning, The Pledge of. Allegiance, and analyze the meaning behind it. Grade Range: 3-5. Objective: After completing this activity, students will be able to: