

Hedy Lamarr, A Hollywood actress who also a mathematician and inventor
I believe it’s accurate to claim that the internet has altered the course of history. Consider using the internet without Wi-Fi for a moment. Yes, we did back when there was “dial-up,” but it seems like a very long time ago. If some very smart people hadn’t used their intelligence and inventiveness, this amazing innovation might never have been made.

You may be familiar with well-known figures like Bill Gates and Steve Jobs, but did you know that one remarkable woman made significant contributions to the growth of the internet and the tech industry? She also wasn’t a well-known scientist or Nobel Prize recipient. Hedy Lamarr was a well-known Hollywood actress. The actress also led a very interesting life, contributing to the development of one of history’s most significant inventions.
Who Was This Famous Hollywood Actress and her inventions?

Hedy Lamarr was an Austrian-American actress who also worked as an inventor on the side. She was renowned for her gorgeous beauty and superb acting abilities, but she was in no way just a lovely face. The actress was a great person as well. Now who was this famous Hollywood actress?
Like so many Hollywood celebrities, Lamarr made the decision to change her name in order to fit the “mould” of Hollywood. She was Hedwig Eva Maria Kiesler at birth. Since many of the celebrities at the time were of European descent and the general people didn’t really like names with German roots, it was common for stars to go by new names. Lamarr was born in the lovely city of Vienna, Austria, in 1914.
Hedy Lamarr, an Austrian-born actress most renowned for her seductive performances in the 1930s and 1940s, struggled with her beautiful features throughout her life. She served as the model for the iconic cartoon beauties Snow White and Catwoman thanks to her unrivaled beauty, and in the 1940s, more patients seeking plastic surgery wanted her profile than any other. She would frequently assert that aesthetics weren’t important to her, yet later in life, she herself underwent repeated plastic surgery. She could not bear to lose her youthful attractiveness.
A recent addition to the National Portrait Gallery honoring the actress beautifully captures that beauty. Conspiratori, her World War II picture, was promoted with this Italian poster (The Conspirators). Her appearance embodies the appeal that made her the “most beautiful lady in the world.”
But Hedy Lamarr was much more than just her lovely dark hair, transparent fair complexion, and brilliant green eyes. She was a brilliant innovator who laid the seed for some of today’s most pervasive technology, such as Wi-Fi, Bluetooth, GPS, cordless phones, and cell phones. Her innovations came from a convoluted existence that was full of ambiguities and elusive realities and was not like the movie star she appeared to be.
When Lamarr took apart and put back together a music box at the age of 5, she sparked an interest in inventing that she never lost. She collaborated on her inventions with a strange composer named George Antheil. They collaborated primarily behind closed doors, and because Lamarr’s autobiography, which was ghostwritten, omits any mention of her innovations, more information about how she approached her job is woefully lacking. Carmelo “Nino” Amarena, an inventor, recalls conversing with Lamarr in 1997. Amarena remarked, “We conversed like two engineers working on a hot project. I always felt like I was speaking to a fellow innovator rather than a movie star.
In the early stages of World War II, Lamarr made a significant discovery while working on a device to prevent opposing ships from jamming torpedo guidance signals. Nobody knows what inspired the concept, but Antheil acknowledged that Lamarr’s design was used as the basis for his practical model. They devised a method for the radio guidance transmitter and torpedo’s receiver to switch frequencies at the same time, rendering it difficult for the adversary to track and intercept a message before it changed frequencies. This strategy was dubbed “frequency hopping.”
But when Lamarr and Antheil presented their invention to the United States Navy engineers rejected it because they felt it was too complicated. A contractor hired by the Navy to develop a sonobuoy that could be thrown into the water from an airplane to detect submarines was given Lamarr’s idea in the middle of the 1950s, when lightweight transistors were becoming more readily available. Over time, that contractor and others have used Lamarr’s design as a launching pad for more ambitious concepts. Despite the fact that Lamarr and Antheil’s patent didn’t expire until 1959, they were never paid for the use of their idea. All American ships on a blockade line around Cuba in the Cuban Missile Crisis of 1962 were armed with torpedoes that were guided by a “frequency-hopping” mechanism.

Lamarr, who was raised in Vienna in an assimilated Jewish family, would eventually conceal her heritage, even to her own kids. She often expressed contempt for the Nazis, some of whom had dined at her table when she was married to an Austrian munitions manufacturer, Fritz Mandl, according to Antheil’s memoir, Bad Boy of Music, who claims that she initiated their effort to develop weapons for the Allies because “she did not feel comfortable sitting there in Hollywood and making lots of money when things were in such a state.” She recalled that the Germans and other prospective buyers had discussed secret weaponry at her house, however it is not known if she had heard these discussions. Benito Mussolini, the head of the Italian Fascist movement, was one among those who entered her house.
She later claimed that Adolf Hitler had dinner at her home, but her biographers do not accept this claim because she and her husband were both Jews, and as a result, lower-ranking Nazis visited them at home rather than meeting in a more open location. She claimed that her spouse frequently sought her advice on new weapons, and it’s probable that their discussions inspired her to start designing her own guns. Some have claimed that she plagiarized Mandl or one of his guests by using the concept of “frequency hopping,” but she has denied this and no German weapons have ever employed the concept.

Lamarr passed away in January 2000 at the age of 85, but even as she approached death, she continued to create items, including a bright dog collar, upgrades for the Concorde jet, and a new style of stoplight. She would be happy with the legacy of her “frequency hopping” idea, according to her son Anthony Loder, who said this after her passing: “She would love to be remembered as someone who contributed to the well-being of humankind.”

Tunnels Dug by ancient giant sloths, A South American Megafauna
For years, scientists didn’t know what caused mysterious cave networks in South America. In 2010, they learned that the caves were actually tunnels dug by ancient giant sloths

Medals of Friendship: The Enduring Olympic Story of 1936
At the 1936 Summer Olympics, two Japanese pole vaulters named Sueo Oe and Shuhei Nishida tied for second, but they declined to compete against each other. As a result, Nishida was awarded the silver medal and Oe won a bronze medal. Upon returning to Japan, the athletes had their medals cut in half and spliced together to create new "friendship medals," which were half silver and half bronze.

How 18th Century Women’s Rights Movements Shaped Modern Equality
The 18th century marked a turning point in the quest for women’s rights, as passionate voices challenged centuries of gender inequality and laid the groundwork for modern feminism. From pioneers like Mary Wollstonecraft to revolutionary declarations and early advocacy, this era sparked debates on education, political participation, and social justice that continue to resonate today. Journey through the origins of women’s rights movements and discover how their bold ideas shaped the fight for equality.

Why was the Eiffel Tower almost demolished
The Eiffel Tower was intended to be a temporary structure for the World's Fair in 1889, but it was nearly dismantled and sold for scrap metal. It was saved because of its potential use as a radio antenna, and it now serves as a tourist attraction as well as a working broadcast tower.

Nordlingen, The Town Inside A Meteorite Crater With Millions Of Meteorite Diamonds
The German town of Nördlingen is embedded with 72,000 tons of microscopic diamonds. About 15 million years ago, a meteorite hit this region, and the impact created a massive depression and formed rocks containing diamonds, glass, and crystals. The town was built in the impact crater sometime around 898 CE.

What exactly was the US's 'Ghost Army' during WWII?
During WW2, there was a special unit of men dubbed the ‘Ghost Army’. The unit was made of artists, creative and engineers and their job was to create deception about the enemy. From inflatable tanks to phony convoys to scripted conversations in bars intended to spread disinformation, they used all possible tricks to fool the enemy.

3 men lived on top of a billboard in tents for almost 9 months
From 1982-1983, three men in Allentown PA competed in a radio contest in which they lived on top of a billboard in tents. Whoever stayed up longest would win a house. Due to economic pressure from the recession, none of the contestants wanted to give up, so the contest lasted almost 9 months.

Why This Belgian Bar Makes You Trade Your Shoe for a Beer
To prevent tourists from stealing their beer glasses, some bars in Belgium require people to hand over one of their shoes as a deposit which is then put in a basket and hung from the ceiling. These shoe baskets have also become an attraction.

The story of Bill Haast, who lived to be 100 despite his extensive snake venom injections
Bill Haast immunized himself by injecting snake venom into his blood for several years. He holds the Guinness World Record for surviving the most lethal snake bites, having been bitten over 172 times. Bill became known as "Snake Man" around the world and lived for over 100 years.

Marion Stokes recorded 30 years of television
Marion Stokes, a Philadelphia woman began taping whatever was on television in 1979 and didn’t stop until her death in 2012. The 71,000 VHS and Betamax tapes she made are the most complete collection preserving this era of TV. They are being digitized by the Internet Archive.

10 world’s most destructive and dangerous volcanic eruptions in history
Volcanic eruptions can devastate cities, change the world's atmosphere, and devastate economic systems. They can create molten lava rivers, mudslides, suffocating ash, and poisonous gases that cause chaos around the world for years. A volcanic explosion's effects can be massive, from its size to its death toll to its economic cost. Here is ten world’s most destructive and dangerous volcanic eruptions in history.

The Day an Israeli F-15 Landed with One Wing: Zivi Nedivi’s Unbelievable Mid-Air Survival
Discover the astonishing true story of Israeli pilot Zivi Nedivi, who safely landed an F-15 after a mid-air collision tore off its entire right wing. Learn how skill, quick thinking, and the F-15’s unique design turned a disaster into a legendary feat in aviation history

The history of Flour sack clothing fashion
After Kansas mill owners found women reused flour sack materials into apparel in the 1920s and 1930s, they started applying patterned designs to give families with more fashionable patterns and material.

Quaker Oats Fed Children with Radioactive Oatmeal
In the 1940s and 1950s, Quaker Oats and MIT conducted experiments on radioactive iron and calcium-containing cereal. The diet was part of a study to see if the nutrients in Quaker oatmeal traveled throughout the body. In January 1998, a $1.85 million settlement was reached for 30 victims who came forward.

The Arabia Steamboat: Unearthing a 19th Century Time Capsule from the Missouri River
The Arabia was a steamboat that sank in the Missouri River in 1856. Over time, the river shifted 800 meters to the east, eventually turning the site of the sinking into a field. The steamboat remained under 45 feet of slit and topsoil until 1988, when it was excavated. The mud, as it turned out, was such a great preserver that most of the artifacts on board were found to be intact. They even found jars of preserved apples that were still edible!

The story of a man who spent 72 hours with 72 venomous snakes to prove they only bite when provoked
In the 1980s, an Indian man spent 72 hours in a glass cabin with 72 snakes, some of which were extremely venomous. His aim was to prove that snakes only attack when provoked. Remarkably, he was not bitten once in those 72 hours and even set a Guinness World Record in the process.

Robert Odlum, the first person to jump off the Brooklyn Bridge
The first person to jump off the Brooklyn Bridge was a professional high diver who "wanted to demonstrate that people did not die simply by falling through the air, thus encouraging people to be willing to jump from a burning building into a net." He proved himself correct by safely falling 135 feet through the air and dying only when he hit the water.

June and Jennifer Gibbons The silent twin who Only Spoke to Each Other
Identical twins June and Jennifer Gibbons were born on 11 April 1963 at a military hospital in Aden, Yemen where their father worked as part of the Royal Air Force.

The Tragic Story Of Mary Ann Bevan, The ‘Ugliest Woman In The World’
After the death of her husband, Mary Ann Bevan had no income to support herself and her children. She then decided to enter a contest where she won the title of “ugliest woman” and was later hired by a circus. She endured this ridicule from the world to provide for her family.

Charlie Brown and Franz Stigler incident: Enemy became friends
During WWII, a German pilot spotted an American pilot’s crippled plane in the sky. Tailing it, he noticed that gunner was dead, crew injured, and they posed no threat. Instead of destroying the plane, he led it to safety. 40 years later, the two pilots reunited.

The 1814 London beer flood
In 1814, there was a beer flood in London when a tank containing more than 300,000 gallons ruptured in which 8 people drowned.

The unbroken seal on King Tutankhamun's tomb until 1922
The unbroken seal of Tutankhamun's tomb before it was opened in 1923, it was unbroken for over 3000 years.

The mysterious secret of Dr James Barry
Before women were allowed to enroll in medical school, Margaret Ann Bulkley studied medicine and assumed the identity of Dr. James Barry for 56 years while dressing as a man. After 46 years of service as an army doctor officer, her secret was not made public until after her death in 1865.

The 440-pound bear named Wojtek and his World War II battle against the Nazis
Polish troops raised an orphaned bear cub during WWII. He enjoyed drinking beer, and was trained to salute. He became officially enlisted as a member of the forces, and helped carry artillery during battle.

Underground Railroad to Mexico freed thousands of slaves in 1829
Slavery was abolished in Mexico in 1829. Slaves were escaping to Mexico, and slaveholders in the US were aware of this. The US attempted to get Mexico to sign a fugitive slave treaty, which would have required Mexico to send back escaped slaves to the US. But, Mexico refused, arguing that slaves were free as soon as they set foot on Mexican soil.