A laser is a device that produces a very narrow and powerful beam of light. This light can be used for many things, such as cutting materials, performing medical operations, or reading barcodes.
A bone is any of the hard, rigid parts that form the skeleton of a vertebrate animal, primarily composed of calcium carbonate and calcium phosphate. In an academic context, it refers to the structural tissue that supports the body, protects internal organs, and produces blood cells.
Describes the darkest possible color, resulting from the total absence or complete absorption of visible light. It is frequently used to describe physical appearance, somber moods, or specific technical concepts in science and finance.
A system of words, letters, figures, or other symbols used to represent others, especially for the purposes of secrecy or computer programming. It also refers to a set of rules or principles that a group of people agree to follow.
A word used before a singular noun that is not specific or is being mentioned for the first time. It is used only before words that begin with a consonant sound to indicate one of something.
