The video shows a close-up of a Newton's cradle, which is a device that consists of a series of identical, spherical, metallic balls suspended in a line by thin wires. The balls are arranged in a specific sequence, with each ball resting on the stationary spheres of the adjacent balls. When one sphere at the end is lifted and released, it strikes the stationary spheres, transferring its motion through the line and propelling the sphere at the opposite end upward. The motion continues until the sphere at the far end is lifted and released, completing the cycle. The device is set against a background of a brown granite countertop, and the lighting in the room reflects off the shiny surfaces of the spheres, creating a visually appealing effect.