On 111 years ago today, November 9, 1914 (September 22, 1914 in the lunar calendar), Heidi Rama, the mother of mobile CDMA, was born. Heidi Rama (November 9, 1914-January 19, 2000), the mother of CDMA, was discovered by an American director in the early 1930s when she was in her 10s because of her amazing beauty. From then on, she entered Hollywood. As a Hollywood superstar with a prominent background and good personal connections with high-level military officials from various countries, she was once praised as the most beautiful woman in the world. She also has another precious asset-the foundation for today's popular communication technology LAN and mobile phones. Communication technology laid the foundation and will always be left to and benefit future generations. Heidi Lamarr (formerly known as HedwigEvaMaria Kiesler) was born in 1913 into a Viennese Jewish banker family. She lived a wealthy life and received a very good education since childhood. He lived a rich life since childhood, had no worries about food and clothing, and received a good education. In the early 1930s, when she was in her teens, she was discovered by an American director for her amazing beauty and was officially introduced to Hollywood. As soon as she entered the film industry, her beauty caused people's uproar. Although her acting career could only stop at the second-rate level in the era when Garbo, the La Traviata Lady, dominated the world alone, her appearance was undisputed as the most beautiful. At the age of twenty, she showed her amazing beauty and bold acting skills to the world with Ecstasis, the first "two-show" film in film history. In this film, Hedy plays the role of a young wife who is longing for love beside an old man. Her exquisite face and graceful body running in the woods not only shocked the audience, but also brought widespread criticism, so that later her wealthy husband, a big Austrian arms dealer and Nazi accomplice, Friedrich Mandl (nicknamed Fritz), spent a lot of money to collect copies of the film. Before Heddy Lamarr got married, she had been enthusiastic about film art, but after the movie Ecstasy, a sudden and seemingly happy marriage changed her destiny and dragged her into the whirlpool of European political and military struggles before World War II! Hedy married Fritz, a well-known Austrian arms dealer at the time, when she was twenty years old. Friedrich Mandl, although this man, like Hedy, is also a Jew, but he is a greedy man with no position. Since 1934, the Austrian regime began to be gradually controlled by pro-Nazi politicians. In order to curry favor with the pro-Nazi government, Fritz sold arms to the German military. Fritz's original main products were armor mounted on tanks and warships, as well as ordinary grenades for artillery. Soon after, when Fritz's Austrian arms company (Hirtenberger Patronen-Fabrik) was seized by the pro-Nazi Austrian government, he still supported the Nazis and worked tirelessly to advise them. In the mid-1930s, he turned his attention to aircraft, became interested in flight control systems and launched a series of research. Hedy's appearance was a magic weapon for her husband to please the Nazi hierarchy, and Hedy gained many cutting-edge ideas in the field of military secret communications. However, no one expected that his wife Hedy, as a celebrity in Vienna's social circle at the time, would also learn about her husband's work in detail while following her husband to please Nazi leaders such as Hitler and Mussolini. Mandl probably would not have imagined it at the time-his beautiful wife, who was dealing with powerful people, could not only fully understand his research, but also develop it to a level far beyond his depth in the future. But Hedy was firmly anti-Nazi, and the conflict between the two could not be reconciled, so the marriage ended in 1937. After the Nazis officially entered Austria in March 1938, Hedy also fled to London to stay away from her failed marriage and many Nazi "friends." By the way, he also brought Nazi "military secrets" in wireless communications to the allies. These secrets are mainly "command-based guidance" systems based on secure radio communications, which are used to automatically control weapons and accurately strike targets. However, in order to prevent radio commands from being stolen by the enemy, it is necessary to develop a series of secure radio communications technologies-well-educated Hedy secretly absorbed many valuable forward-looking concepts. In the early 1940s, Heidi met George Ansell in Hollywood, who also deeply hated Nazis. This man was originally a European musician, but was later forced to return to Hollywood when World War II broke out. Heidi raised the idea of a Secret Communications System to George, hoping to develop a military communications system that could withstand enemy radio interference or prevent eavesdropping. What George wanted to do was to learn from the automatic piano he was familiar with and follow Hedy's ideas to develop a model of a device that could automatically compile passwords. In wartime, whether military communications are confidential or not can almost determine the victory or defeat of the war. Therefore, George, who was determined to contribute to the war in Germany, actively cooperated with Heidi in carrying out this research. And finally made this automatic piano inspired model. With the wisdom of the two men and the help of other scientists, they completed the research and obtained a U.S. patent in August 1942. This is "spread spectrum communication technology". They gave the patent to the U.S. government in the hope of helping the Second World War, which was in full swing at the time. But scientists in the U.S. military don't take their research seriously at all. The U.S. military even believes that if Heidi wants to help the United States, she might as well use her beauty and star status to help the United States sell more government bonds. In fact, Heidi actually helped sell $7 million in bonds, while her and George's great invention remained frozen. Exhibition spectrum technology design drawings Now that mobile phones are popular, don't underestimate this little communication tool in your hands. Behind it stands the most beautiful woman in the world. We should not forget her! When CDMA-based communication technology began to enter public life, the scientific community remembered Heidi, the 83-year-old mother of CDMA. Heddy Lamarr, the nonprofit, unofficial Electronic Frontier Foundation (EFF) awarded the award to Heidi. Rama deserved the honor long ago, but at this time, her patent had expired and she had not benefited from it all her life. In addition, this beautiful woman passed away on January 19, 2000. Whether she is an actress or a scientist, she has lived a very long life. I feel very relieved. She is the most incredible woman of the last century, and her value far exceeds Garbo, who is like the mystery of the Sphinx. She is amazingly beautiful and loose. She was the first actress to have a show in movies, and her lifelong romance was even more so than Marilyn. Sexy goddesses like Monroe also feel inferior. But she has such a rigorous scientific mind and has contributed such valuable inventions to the world. Rama in the light and shadow, a mysterious woman! Heidi Rama, mother of CDMA, Heidi Rama,