1. Alternating Current (AC) System: One of Tesla's most significant contributions to the field of electrical engineering was his development of the alternating current system, which is now the predominant method for transmitting electricity worldwide.

2. Induction Motor: Tesla invented the induction motor that uses an alternating current instead of a direct current. This type of motor has become widely used in various appliances and industries due to its efficiency and reliability.

3. Transformers: Tesla played a crucial role in developing transformers, which are essential components in electrical systems for stepping up or down voltage levels as needed.

4. Wireless Transmission of Electricity: Tesla envisioned a world where electricity could be transmitted wirelessly through the air. He conducted experiments at his laboratory in Colorado Springs, demonstrating wireless transmission of energy over short distances.

5. Radio: Although Guglielmo Marconi is often credited with inventing radio, Tesla's work laid the foundation for modern radio technology. In 1943, the US Supreme Court recognized Tesla's patent for radio communication as having priority over Marconi's.

6. Remote Control: Tesla demonstrated remote control technology by operating a small boat using radio waves during an exhibition in 1898. His invention paved the way for the development of modern remote-controlled devices.

7. Tesla Coil: The Tesla coil is a high-frequency transformer capable of producing extremely high voltages and currents. It has been used in various applications, including radio transmission, television sets, and even special effects in movies.

8. Neon and Fluorescent Lighting: Tesla experimented with different types of lighting, including neon and fluorescent lights. He developed methods for generating light without heating a filament, leading to more efficient and long-lasting lighting solutions.

9. X-rays: Tesla conducted early experiments with X-rays and contributed to their understanding and development. He discovered some properties of X-rays, such as their ability to produce fluorescence and their potential use in medical imaging.

10. Radar: Tesla proposed a system for detecting objects at a distance using radio waves, which laid the groundwork for the development of radar technology.

11. Earthquake Machine: Tesla claimed to have developed a small mechanical oscillator that could produce powerful vibrations and potentially cause earthquakes. While its effectiveness remains debated, it demonstrates Tesla's innovative thinking in various fields.

Overall, Nikola Tesla's inventions and contributions to science have had a lasting impact on modern society, particularly in the fields of electricity, communication, and engineering.
What are some of Nikola Tesla's most notable inventions and contributions to science?