electron: A negatively charged particle, usually found orbiting the outer regions of an atom; also, the carrier of electricity within solids. fundamental: Something that is basic or serves as the foundation for another thing or idea. infinity: An abstract concept in which something has no end. model: A simulation of a real-world event (usually using a computer) that has been developed to predict one or more likely outcomes. Or an individual that is meant to display how something would work in or look on others. particle: A minute amount of something. photon: A particle representing the smallest possible amount of light or other type of electromagnetic radiation. physical: (adj.) A term for things that exist in the real world, as opposed to in memories or the imagination. It can also refer to properties of materials that are due to their size and non-chemical interactions (such as when one block slams with force into another). (in biology and medicine) The term can refer to the body, as in a physical exam or physical activity. physics: The scientific …