Decode.the.universe on Instagram: "The video shows a close-up, cutaway view of an engine's internal components to demonstrate how pistons move. It focuses on the rapid, up-and-down motion of the pistons within the cylinders. This reciprocating motion is transferred to a **crankshaft** via a **connecting rod**. The video visually explains a key mechanical principle: the conversion of linear motion into rotational motion. This rotational energy is what ultimately powers the vehicle. The process yo