Tesla refers to three main concepts:
1. **Nikola Tesla**: A Serbian-American inventor, electrical engineer, mechanical engineer, and futurist known for his contributions to the design of the modern alternating current (AC) electricity supply system. Tesla was a pioneer in the field of electromagnetism and made significant advancements in radio technology, inductive charging, and wireless power transmission.
2. **Tesla, Inc.**: An American electric vehicle and clean energy company founded in 2003. It specializes in electric cars, battery energy storage, and renewable energy products. Tesla is known for its innovative electric vehicles, including the Model S, Model 3, Model X, and Model Y, as well as its advancements in self-driving technology and battery technology.
3. **Unit of Measurement**: The tesla (symbol: T) is the SI unit of magnetic flux density (magnetic field strength). One tesla is defined as one weber per square meter and is used to quantify the strength of magnetic fields.
Each of these meanings reflects significant advancements in technology, energy, and physics.