Items

• depth

  Distance from the top surface down to the bottom of something.
• derive

  To find or get a formula or result by using known facts, principles, or equations through logical steps.
• destructive interference

  Occurs when two or more waves overlap out of phase, meaning the crest of one wave aligns with the trough of another. This causes the waves to cancel each other out, reducing the overall amplitude.
• deuterium

  A stable isotope of hydrogen, often called heavy hydrogen.
• deviate

  To move away or change from a normal path, direction, or expected value.
• device

  Any piece of equipment or tool designed to perform a specific function or task.
• diamagnetism

  A type of magnetism where materials create a weak, negative response to an external magnetic field, i.e., they are repelled by it.
• diameter

  The distance across a circle, passing through the center from one side to the other.
• diatomic

  Molecules composed of two atoms, which may be of the same or different elements.
• dielectric

  An insulating material that doesn’t conduct electricity but can store electric energy when placed in an electric field.
• differential

  A very small change in a quantity, often used to study how things change continuously.
• differentiate

  To find the rate at which something changes, usually by using calculus.
• differentiate

  To identify the differences among things.
• diffraction

  A wave phenomenon where waves bend around obstacles or spread out after passing through narrow openings.
• diffuse

  Describes the way light or other waves scatter in many directions rather than reflecting or transmitting in a single, clear path.
• diffusion

  The process by which particles spread out from an area of higher concentration to an area of lower concentration, moving randomly until they are evenly distributed.
• digit

  Any single number from 0 to 9.
• dimension

  A direction or measurement of space, like length, width, and height. Time is also considered a dimension in spacetime.
• diode

  An electronic component that allows current to flow in only one direction, like a one-way valve for electricity.
• dipole (electric)

  A pair of equal and opposite electric charges that are separated by a small distance.
• dipole (magnetic)

  A pair of equal and opposite magnetic poles separated by a small distance.
• direction

  The line or path along which something moves, points, or faces.
• disc

  A disc is a flat, round shape like a circle, but includes everything inside it, like a flat, solid plate.
• displacement

  A vector quantity that describes the shortest straight-line distance and direction from an object's initial position to its final position.
• dissipation

  The process by which energy (usually mechanical, electrical, or thermal) is lost, spread out, or transformed into less useful forms, often as heat.