Charles Wheatstone

Charles Wheatstone was a 19th-century scientist and inventor known for pioneering work in electrical and telecommunication technologies. His notable contributions include developing the **playfair cipher** for secure communication, inventing the **Wheatstone bridge** for measuring electrical resistance accurately, and advancing **telegraphy**, which allowed long-distance instantaneous communication. He also contributed to the development of the **stereoscope**, an early device for creating 3D images. Wheatstone's innovations laid essential groundwork for modern electronics and communication systems, earning him recognition as a key figure in the history of scientific progress.