Polish Inventions You Use Every Day: From Silicon in Your Smartphone to Blood Type 'O'

You have a smartphone in your pocket, a blood donor card with blood type '0 Rh+' in your wallet, and vitamins in your cabinet. All these things have a Polish trace, although you won't find it on the packaging. The silicon in your phone's processor was most likely grown using the Czochralski method. The zero in blood types was introduced by Ludwik Hirszfeld. The word 'vitamin' was coined by Kazimierz Funk from Warsaw.

This guide tells the stories of Polish inventors, discoverers, and ideas that changed the daily lives of millions. You will also find stories that are not in school textbooks: a pen dipped in molten tin, mathematicians feeding lice with their own blood, a priest in Chicago who ordered to be shot at, and a pianist with patents for car shock absorbers.

Silicon in smartphones grew from a chance mistake in Berlin

The most important Polish invention that you use every day is inside your phone, laptop, and solar panel. Processors and memory are made on thin slices of silicon cut from one large crystal. About 95% of the world's production of monocrystalline silicon is produced using a method developed in 1916 by Jan Czochralski, a chemist from Kcynia. This figure is cited in an article in the journal "Angewandte Chemie" from 2003. Evers et al., "Angewandte Chemie", 2003.

The method is simple in concept. A seed crystal is dipped into a crucible with molten material and slowly pulled out while rotating. The material solidifies on the seed in an orderly, uniform structure. Today's silicon crystals can be up to about 2 meters long and 30 cm in diameter. Description of the method on the website dedicated to Czochralski.

A pen in the crucible instead of an inkwell

The most famous anecdote says that Czochralski, while working in the laboratory of AEG in Berlin, placed a crucible with hot tin on his desk, became lost in thought over his notes, and dipped his pen into the crucible instead of the inkwell. He pulled out a thin thread of solidified metal. It must be said honestly where this story comes from. Czochralski himself only mentioned a "particular coincidence" in 1925. The details about the pen and inkwell are a reconstruction by his biographer, Paweł Tomaszewski. The case is thus confirmed by the inventor himself, while the scene with the inkwell is a biographer's account. Evers et al. discuss the source of the anecdote.

In 1916, Czochralski was not thinking about electronics. The article sent to the editorial office on August 19, 1916, concerned the measurement of the crystallization rate of metals. The method was transferred to semiconductors more than 30 years later by Gordon Teal from American Bell Labs, first for germanium, then for silicon. In 2019, IEEE recognized the method as a milestone in technology and unveiled plaques in Warsaw, Berlin, and Kcynia. IEEE Milestone: Czochralski Process.

He refused Ford, and after the war made shoe polish

• Offer from Detroit: Henry Ford invited Czochralski to his factories and offered him to manage the duralumin plant. Czochralski declined. Science in Poland about Czochralski's life.
• Metal B: in 1924, he developed a bearing alloy for the railway without expensive tin. The German railway immediately bought the patent. Ibid.
• Downfall: after the war, he was accused of collaboration. The investigation was dropped due to lack of evidence, yet in December 1945, the Senate of the Warsaw University of Technology removed him from the faculty. He moved to Kcynia and founded BION, which produced, among other things, shoe polish and perm solution.
• Rehabilitation after 58 years: documents found in 2011 showed that he collaborated with the intelligence of the Home Army. The Senate of the Warsaw University of Technology rehabilitated him on June 29, 2011. Science in Poland about Czochralski's rehabilitation.
• Swiss account: on a published list of dormant accounts in Swiss banks from the war era, there is an entry "Czochralski, Jan [Poland]". Evers et al., 2003.

Czochralski did not patent his method. He was the son of a craftsman, did not graduate from high school, yet became the president of the German Society of Metallurgy.

The kerosene lamp first lit in a hospital

On July 31, 1853, kerosene lamps built according to the design of pharmacist Ignacy Łukasiewicz were lit in a hospital in Lviv's Łyczaków, constructed by tinsmith Adam Bratkowski. The Museum of Oil Industry in Bóbrka calls this date the symbolic beginning of the oil industry. Museum in Bóbrka about Łukasiewicz. The lamps illuminated the operating room. Encyclopedia of World Biography.

Łukasiewicz, together with Jan Zeh, distilled oil in the back of a Lviv pharmacy. In 1854, he founded an oil mine in Bóbrka with Tytus Trzecieski and Karol Klobassa-Zrencki. The museum still has functioning wells, and in 2018, the mine was designated a Historic Monument. Museum in Bóbrka about the mine.

A Pole was not the first with oil, and it's worth knowing

In Poland, it is often said that Łukasiewicz "invented kerosene." This is not true. Canadian Abraham Gesner publicly demonstrated lamp fuel as early as 1846, coined the name "kerosene," and received American patents for it in 1854. Dictionary of Canadian Biography about Gesner. Łukasiewicz's documented contributions include the distillation of kerosene from Galician oil, the first public use of a kerosene lamp in a hospital, and one of the oldest oil mines in the world. The museum in Bóbrka cautiously refers to it as "the first multi-dimensional oil enterprise in the world."

The man who distributed lamps to churches

• His parents could afford to educate only one son. They chose his brother Franciszek. Kuryer Polski about Łukasiewicz.
• Before becoming an inventor, he spent 1846–1848 in prison for conspiracy against Austria. Museum in Bóbrka.
• He spent the money from oil on schools, roads, and churches. He distributed kerosene lamps for free to local churches and monasteries. Encyclopedia of World Biography.
• He created the "Bracka Fund," which was insurance for oil miners. The museum calls him the creator of social care in the oil industry.

Kraków was once the European pole of cold

In the spring of 1883, at the Collegium Physicum of the Jagiellonian University, Karol Olszewski and Zygmunt Wróblewski became the first in the world to obtain liquid oxygen in a static state, that is, in a test tube, with a visible meniscus of liquid. A few days later, they liquefied nitrogen. Previously, Frenchman Louis Cailletet and Swiss Raoul Pictet had only obtained a fleeting mist. UJ folder for the 130th anniversary of gas liquefaction. The exact dates of the liquefactions were collected by Alicja Rafalska-Łasocha: oxygen on March 29 and April 4, nitrogen on April 13, 1883. PAU History Commission proceedings, 2015.

For several years, Kraków was the world center for low-temperature research. Liquefiers from UJ were purchased in Vienna, Tokyo, and Philadelphia, among others. Olszewski, for health reasons, did not like to travel, so the world came to him. Olszewski also took the first X-ray photograph on Polish soil in January 1896, less than a month after Röntgen's discovery was announced. UJ folder.

A Nobel laureate appreciated them, a kerosene lamp killed one of them

Dutch Nobel laureate Heike Kamerlingh Onnes, who later liquefied helium, called the work of Wróblewski and Olszewski "fundamental, classical" in his Nobel lecture in 1913. Onnes's Nobel lecture, 1913. However, the collaboration between the two Poles lasted only a few months, after which they fell out. The reasons for the conflict could not be determined from the sources.

Wróblewski, previously a Siberian exile after the January Uprising, died on April 16, 1888. While working in the laboratory in the evening, he spilled kerosene from a lamp on himself, and his clothing caught fire. Radio Kraków about the transfer of Wróblewski's remains. This is a bitter irony of history: he was killed by a kerosene lamp, an invention of another Pole. In 2021, his remains were laid to rest in the National Pantheon in Kraków, next to Olszewski.

The word 'vitamin' was coined by a Varsovian

When you buy vitamin D or cereals "enriched with vitamins," you are using a word popularized in 1912 by Kazimierz Funk, a biochemist born in Warsaw. In the article "The etiology of the deficiency diseases," he described beri-beri, scurvy, pellagra, and rickets as deficiency diseases and wrote about substances that prevent them: "vitamine." Article about Funk in PMC. The name combined the Latin vita (life) with "amine," because Funk believed that all these substances were amines.

He was mistaken, and hence the change in spelling. In 1920, British biochemist Jack Drummond proposed dropping the final "e" since there was no evidence that they were amines. In the same text, he proposed the names "vitamin A, B, C." Drummond states directly that Funk "coined the name." Drummond's text from 1920 (reprint).

Irony in a test tube

Funk was convinced that he had isolated the factor that protects against beri-beri. According to some historians, his preparation mainly contained nicotinic acid, or niacin. The Hospitalist on the history of vitamins. Niacin later turned out to be a treatment for pellagra, another disease from his list from 1912. The sources are not consistent here, so we write cautiously. Funk did not discover vitamins himself either. Previously, Christiaan Eijkman and Frederick Hopkins worked on them, who received the Nobel Prize in 1929. Funk named the phenomenon and conceptualized deficiency diseases.

According to a biography on the dzieje.pl website, his superiors at the Lister Institute in London questioned his results and prohibited the use of the word "vitamin" in the institute. Funk lived in seven countries, received American citizenship in 1920, and died in 1967 in Albany, New York. Dzieje.pl about Kazimierz Funk.

Zero in blood type is a number, not a letter

The blood type was not discovered by a Pole. It was discovered by Austrian Karl Landsteiner between 1900 and 1901, for which he received the Nobel Prize in 1930. Ludwik Hirszfeld, a doctor born in Warsaw, along with German Emil von Dungern in Heidelberg between 1910 and 1911, demonstrated something equally important: blood types are inherited according to Mendel's laws. They studied 348 people from 72 families. They assigned the designations A, B, and 0, which were adopted by the League of Nations in 1928. "Vox Sanguinis", 2022: biography of Hirszfeld. Landsteiner himself acknowledged in his Nobel lecture that the main findings on the inheritance of blood types are due to von Dungern and Hirszfeld.

He lowered grades for 'group O'

In the world, it is said "O" (the letter), in Poland "zero." Hirszfeld wanted zero. According to the memories of his student Feliks Milgrom, he lowered grades for students who said "group O" during exams. The same article debunks the popular theory that "O" comes from the German ohne ("without"). The authors wrote "weder A, noch B," meaning "neither A nor B." "Vox Sanguinis", 2022.

Blood group 'Bombay' could have been called 'Warsaw'

• Front Salonika: during World War I, Hirszfeld and his wife Hanna examined over 8000 soldiers and civilians from at least 16 ethnic groups. This was the first work showing that the frequency of blood types varies between populations.
• Ghetto: in 1941, in the Warsaw ghetto, Hirszfeld encountered a patient whose blood type could not be identified. He was most likely a rare Bombay phenotype, described in India only 11 years later.
• At the ghetto gate: a German guard found a book in German in his suitcase. Hirszfeld explained that he was a scientist and wrote it for the German government. The soldier replied, "but now you are just a Jew."

All three stories are described in the biography in "Vox Sanguinis". Hirszfeld escaped from the ghetto in 1942 and survived the war in hiding, but his daughter Maria died while in hiding. He wrote the memoir "The Story of One Life" while in hiding in 1943. 1943.pl about Hirszfeld.

Surgical mask and the surgeon who operated in silence

In 1897 in Wrocław (then Breslau), surgeon Jan Mikulicz-Radecki, previously a professor at the Jagiellonian University, began to place a piece of gauze over his nose and mouth. The inspiration was the research of bacteriologist Carl Flügge, who demonstrated that when we speak, we spread droplets with bacteria. Medical historians write honestly: Mikulicz did not invent the mask, but he was the first to apply it in operations with a bacteriological justification and described it in a publication. Schlich and Strasser, "Medical History", 2022.

About the mask, Mikulicz wrote: "we breathe through it as freely as a lady who wears a veil on the street." The gauze was also meant to hold the chin, as both Mikulicz and Flügge wore fashionable beards at the time. In his clinic, almost no one spoke during operations, and commands were given by gestures. American surgeon William Keen once asked him for gloves, and Mikulicz added a mask to the package. All this is described in the same article. Research on the permeability of masks, initiated in the circles of Flügge and Mikulicz, leads directly to today's filtration tests.

Gloves are not his merit. Rubber surgical gloves were ordered in 1889 by American William Halsted for nurse Caroline Hampton, whom he later married. Mikulicz's cotton gloves from 1896 were later and did not survive. Science History Institute about the first gloves.

Polio Drops and Chocolate Milk

Hilary Koprowski, a doctor and pianist from Warsaw, drank his own vaccine with a weakened polio virus in January 1948 at the Lederle laboratory near New York. On February 27, 1950, he administered it to the first child outside the team, a six-year-old boy. Koprowski recalled that the emulsion "tasted like cod liver oil," and in reality, it was a suspension of tissue from the brains and spinal cords of cotton rats. Another 18 children received the vaccine mixed with chocolate milk. This was the first live oral polio vaccine tested on humans. Gryglewski et al., Hirszfeld Institute. The tests on children without extensive animal studies faced sharp ethical criticism, as noted in the same article.

In popular texts, both stories get mixed up, and it can be read that Koprowski "drank the vaccine in chocolate milk." This is not true: he drank it himself in 1948, while the chocolate milk was given to the children in 1950.

7 Million Polish Children

Koprowski's vaccine was never approved in the USA, where the vaccines of Salk and Sabin prevailed. In Poland, between 1959 and 1960, his type 1 strain vaccinated 7,239,000 children aged six months to 14 years. The result was published in the Bulletin of the World Health Organization. Przesmycki et al., "Bulletin of the WHO," 1962. If you received "drops" on a sugar cube in the PRL, you may have a history that began with this trial.

Koprowski was also affected by one of the loudest conspiracy theories in medicine. In the 1990s, it was claimed that his vaccine administered in Congo transmitted HIV to humans. Koprowski won a settlement with Rolling Stone magazine. Tests of archived samples by three independent laboratories in 2000 found no virus or chimpanzee DNA. The Pennsylvania Gazette on debunking the hypothesis. A genetic analysis in Nature in 2004 showed that HIV appeared in humans decades before the vaccine trials. His laboratory also developed a rabies vaccine using human cells. Stanley Plotkin on Koprowski.

Banach and Herbert Fed Lice with Their Own Blood

This story does not concern things you use today, but it is hard to find a more astonishing tale about Polish science. Rudolf Weigl developed the first effective vaccine against typhus in Lviv in the 1930s. He cultured typhus bacteria in the intestines of lice. Each louse was infected rectally with a thin glass capillary, and the vaccine was made from the ground intestines of the insects. "Emerging Infectious Diseases," 2015.

Lice feed exclusively on human blood. People would attach cages with insects to their legs. With 40 cages on a leg, one person could feed 25,000 lice per month. Ibid. Under German occupation, the work of a feeder provided documentation protecting against deportation and additional rations, and the institute became a refuge for Polish intelligentsia.

• Stefan Banach, the founder of functional analysis, fed lice from late 1941 to July 1944. Memoirs of Wacław Szybalski.
• Zbigniew Herbert worked as a feeder to support his family and obtain an Ausweis. Dzieje.pl (PAP) on Herbert.
• Mathematicians with Lice: According to Szybalski, feeders discussed topology and number theory, and he had to ensure that the insects were not overfed, as they would burst. Szybalski on Weigl's institute.

The vaccine was smuggled into ghettos, including the Warsaw ghetto, where Ludwik Hirszfeld vaccinated with it. Weigl repeatedly refused to register on the German national list and declined a job offer in Berlin. He was nominated for the Nobel Prize many times but never received it. In 2003, Yad Vashem posthumously recognized him as Righteous Among the Nations. Giants of Science (IPN) on Weigl.

Bulletproof Vest from a Polish Parish in Chicago

On October 28, 1893, Chicago Mayor Carter Harrison was shot dead on the doorstep of his home. Father Kazimierz Żegleń, a resurrectionist from the Polish parish in Chicago, began searching for a material that would stop a bullet. Amusing Planet on Żegleń. On March 2, 1897, he received U.S. patent No. 577,999 for "bulletproof fabric." Patent US 577999 on Google Patents.

The patent description contains a surprise: the vest was not made of pure silk. The layers consisted of linen, angora goat hair, silk cords arranged at an angle, cardboard, and felt. In March 1897, Żegleń allowed himself to be shot at publicly with a revolver in Chicago and survived. Previously, shots were fired at wooden blocks, corpses, animals, and volunteers. War History Online on Żegleń's vest.

Szczepanik, Mark Twain, and a Proposal for the President

Żegleń did not find investors in the USA and went to Europe. There, Jan Szczepanik, known as the "Polish Edison," developed a machine method for weaving fabric. Over time, Szczepanik began to present himself as the sole inventor, and many people still believe this today. The vest cost about $800. Around March 1901, Żegleń proposed it to Secretary of President William McKinley, but he declined. In September 1901, McKinley was shot at close range. War History Online.

Szczepanik had other inventions, including the telektroskop, a concept for transmitting images over distance, patented in the UK in 1897. Museum of Polish History on Szczepanik. Mark Twain met him in Vienna and wrote two pieces about him. In the story "From the ‘London Times’ of 1904," the fictional Szczepanik is supposedly murdered, and on the day of the execution, he appears alive on the telektroskop screen. The court still orders the condemned to be hanged, and in response to the argument "but Szczepanik is alive," the judge replies, "Dreyfus is alive too." Full text of Twain's story.

Today's vests are made of Kevlar, not silk. Kevlar was invented in 1965 by Stephanie Kwolek, the daughter of Polish immigrants, at DuPont. Science History Institute on Stephanie Kwolek. Fairly speaking: Poles were pioneers of soft vests, and the material of modern ones was invented by an American of Polish descent.

The Mine Detector That Kosacki Did Not Patent

In the winter of 1941, Lieutenant Józef Kosacki, a communications engineer in the 1st Polish Corps in Scotland, built a portable electronic mine detector in his spare time. The flat head on the rod worked with two coils, and metal in the ground changed the signal in the headphones. In a British competition, the Polish design outperformed six British ones. Warsaw University of Technology on Kosacki.

Kosacki did not take a patent or any money for the invention and handed it over to the British army. About 500 detectors were sent to El Alamein in 1942 and helped Montgomery's army cross German minefields. The British included the word "Polish" in the official name of the equipment. Kosacki's name was kept secret to protect his family in occupied Poland. Designs based on this principle were used by Western armies until the Gulf War in 1991. IEEE Spectrum on Kosacki's detector.

In September 1939, Kosacki was starting up a damaged radio station, Warsaw II, through which the President of Warsaw, Stefan Starzyński, spoke. The only original prototype of the detector is in the museum of the military institute named after him in Wrocław. National Geographic Poland on the prototype. Metal detectors on the beach and airport gates operate on a similar principle of coil field disturbance.

Galvanized Steel and a Coffin Made of Sendzimir Steel

The body of a car, the casing of a washing machine, and a roof made of sheet metal do not rust quickly thanks to galvanization. Tadeusz Sendzimir from Lviv developed continuous galvanization of steel strip in an oxygen-free atmosphere and rolling mills that allowed rolling very thin sheet metal cold. He had about 120 patents and the nickname "Edison of metallurgy." IPN, Giants of Science: Tadeusz Sendzimir.

The idea was born in Shanghai. In 1919, Sendzimir established the first nail and screw factory in China, and its products rusted in the humid climate. The first lines according to his method were established in the early 1930s in Poland, in Kostuchna near Katowice. President Ignacy Mościcki, a chemist by education, reportedly joked that it was "a sanatorium, not a galvanizing plant," because the facility did not emit toxic fumes. In 1934, sheet metal galvanized by his method covered the roof of the Kraków Sukiennice. Dzieje.pl on Sendzimir.

Since 1939, Sendzimir lived in the USA. He changed the spelling of his name from "Sędzimir" to avoid problems with the letter "ę." The T. Sendzimir company still operates today in Waterbury, Connecticut. T. Sendzimir Company website. He died in 1989 in Florida and was buried in a coffin made of galvanized steel using his method. Dzieje.pl. In 1990, the Lenin Steelworks in Nowa Huta was named after him.

The Polish Name in Engineers' Calculators

Engineers and financiers around the world use calculators with "reverse Polish notation" (RPN). Instead of writing "3 + 4 =," you enter "3 4 +" and no parentheses are needed. The name comes from the Lviv-Warsaw logician Jan Łukasiewicz (a different person than the inventor of the lamp). In the 1920s, he invented a notation without parentheses, where the operation sign stands before the numbers. It served him for recording logic, not for computers.

The reverse version for machines was later developed by others, including Australian Charles Hamblin in the late 1950s. The first computers and calculators with RPN appeared in 1963. History of the RPN stack in the HP calculator archive. The true fame was given to it by the HP-35 in 1972, the first pocket scientific calculator. Its manual explicitly mentions "Polish" reverse notation (Łukasiewicz). The HP-35 was designed to survive a drop from about 90 cm onto concrete on each corner and within a year practically replaced the slide rule. IEEE Milestone: HP-35.

The Solitaire that Gave the World the Monte Carlo Method

In 1946, Stanisław Ulam from Lviv was recovering from encephalitis and played solitaire. He wondered what the chances were that the Canfield solitaire would come out. Instead of counting all combinations, he thought it would be simpler to lay out the cards a hundred times and count the successful attempts. He immediately associated this with calculations of neutron movement and told the idea to John von Neumann. Eckhardt, "Los Alamos Science," 1987. Thus, the Monte Carlo method was born, which solves problems through computer random sampling. It is used today in finance, forecasting, and computer graphics.

The name was proposed by physicist Nicholas Metropolis. He wrote that it was not unrelated to Uncle Ulam, who borrowed money from relatives because he "just had to go to Monte Carlo." Metropolis, "The Beginning of the Monte Carlo Method". Ulam was also lucky at a bad time: he left Gdańsk with his brother in August 1939, less than a month before the war. During a boring lecture in 1963, he drew numbers in a spiral and noticed that prime numbers arranged themselves in diagonal lines. This pattern is now called the Ulam spiral. MacTutor, University of St Andrews.

Packets on the Internet and an Engineer Born in Grodno

Every email, video, and transfer on the internet is divided into small packets that reach their destination via different routes. One of the creators of this idea was Paul Baran, born in 1926 in Grodno, then in Poland (now in Belarus). His family moved to Philadelphia when he was two years old. From 1960 to 1964, at the American RAND Corporation, he designed a network that could survive a nuclear attack, as data was divided into blocks and sent via multiple routes. Computer History Museum on Paul Baran.

Baran deliberately did not patent the idea because he believed that a patent would hinder people from using it. The Triangle on Baran. It must be added fairly that he made the invention as an American, in an American institution. Independently, the same idea was developed by British Donald Davies, who is credited with the word "packet." So it is not a "Polish invention," but an invention by a person born in Poland.

The First Successful Handheld Camera Filmed the Battle of the Somme

Kazimierz Prószyński from Warsaw constructed the aeroskop, a handheld film camera powered by compressed air and patented in 1910. The operator pumped air before taking pictures, so he did not have to turn a crank and had both hands free. The London Science Museum calls the aeroskop the first fully successful handheld 35 mm camera. British operator Geoffrey Malins filmed the Battle of the Somme with it. Science Museum Group: Aeroscope Camera. It was also used by travelers in Africa. The "Practical Cinematography" manual from 1913.

Prószyński also invented the amateur camera "Oko" for wide film with miniature frames and a three-blade shutter that reduced flicker, which was taken over by Gaumont. At the end of his life, he worked on a device to help the blind read. After the fall of the Warsaw Uprising, he was arrested by the Germans and died in March 1945 in the Mauthausen camp. Who’s Who of Victorian Cinema on Prószyński.

The Tape Recorder That Is Named in Polish

Stefan Kudelski was born in 1929 in Warsaw and fled with his family to Switzerland before the war when he was ten years old. In 1951, he built a portable tape recorder and named it in Polish: Nagra, meaning "to record." WGBH/NPR on Stefan Kudelski. Nagra became the standard for sound recording on film sets and in reporting. It helped, among other things, in the birth of the French New Wave. For the 1960 Olympic Games in Rome, Italian television RAI ordered 100 units and paid in cash upfront. IATSE Local 695 on Nagra.

The American Academy of Motion Picture Arts and Sciences awarded Kudelski several times for technical achievements, including the Gordon E. Sawyer Award for 1990. Advanced Television on Kudelski. The frequently repeated number of "five Oscars" could not be confirmed, as sources provide different numbers. The miniature Nagra SN, created at the request of a U.S. government agency, was used by the FBI, among others. Crypto Museum on Nagra SN.

In Kudelski's company in Switzerland, Jacek Karpiński worked after emigrating in 1981, the designer of the Polish minicomputer K-202. About 30 copies of this computer were produced in the PRL, one of which went to CERN. Karpiński later abandoned electronics and raised pigs and poultry near Olsztyn. The Museum of Technology in Warsaw estimates the real speed of the K-202 at about 300,000 operations per second, not the popularly stated million. Dzieje.pl on Jacek Karpiński, Dzieje.pl on K-202.

Lunar Rover: How Much of It Is Really Bekker's?

In Polish texts, it is often read that a Pole "built the lunar rover." The truth is more interesting and complex. Mieczysław Bekker, a graduate of the Warsaw University of Technology, created terramechanics, the science of vehicle movement over ground. His book "Theory of Land Locomotion" from 1956 is still the basis for designing off-road vehicles. After the war, he ended up in the USA through the Canadian army and headed a laboratory at General Motors in Santa Barbara. Warsaw University of Technology on Bekker.

The lunar rover LRV, which astronauts drove during Apollo missions 15, 16, and 17, was built by Boeing, while General Motors was responsible for the chassis. The GM team was led by Sam Romano and Hungarian Ferenc Pavlics, and the wire mesh wheels and collapsible chassis are attributed to Pavlics. The Space Review on the rover, EE Journal on LRV construction. It was Bekker who hired Pavlics a few days after his arrival in New York. Pavlics himself said that Bekker established the laboratory and was his boss. Interview with Ferenc Pavlics. A fair verdict: Bekker was the father of the scientific foundations and the laboratory where the rover was born, but not its sole constructor.

Romano and Pavlics drove a remote-controlled model of the rover into Wernher von Braun's office, which convinced him to proceed with the project. During the Apollo 17 mission, astronauts repaired a broken fender of the rover with maps and clamps. The Space Review.

Ergonomics has a Polish godfather

The word "ergonomic" can be seen on office chairs, mice, and keyboards. It was first used in 1857 by naturalist Wojciech Jastrzębowski in the article "Rys ergonomji czyli nauki o pracy". The term combines the Greek ergon (work) and nomos (law). The Department of Ergonomics at the Technical University of Munich acknowledges that a Pole proposed this word as early as 1857, but it was later forgotten. Technical University of Munich on the history of ergonomics. In the United Kingdom, the name "ergonomics" was adopted again and independently only in 1949. Prof. Alan Hedge, Cornell University.

Jastrzębowski had another surprising idea. In May 1831, as a soldier in the November Uprising, he published a project for a perpetual alliance of nations, called the "Constitution for Europe". He advocated for disarmament, the abolition of borders, and religious tolerance. His sundial from 1828 still stands in Warsaw's Łazienki. M. Ratyński, "Independence and Memory", 2022.

Seven shorter stories worth knowing

• Pedal-powered submarines. Stefan Drzewiecki built a one-man pedal-powered submarine for Russia. After a demonstration before the Tsar, 50 units were ordered, but they did not perform well and were converted into buoys. Drzewiecki's first invention was a mileage counter for carriages, and his torpedo launcher was installed on the French ship "Narval". C. Fontanon, 2010.
• A fireworks manual for 150 years. Kazimierz Siemienowicz, a nobleman from the Grand Duchy of Lithuania, published "Artis Magnae Artilleriae pars prima" in Amsterdam in 1650, which described multi-stage rockets. The book served as a pyrotechnics manual in Europe for over a hundred years. Brown University Library. However, he was not the first: a manuscript by Conrad Haas from the 16th century describes multi-stage rockets over a hundred years earlier. "Quarterly of the History of Science and Technology", 1969.
• Cataract removal by freezing. Tadeusz Krwawicz from Lublin described in 1961 the removal of cataracts using a cooled metal probe to which the lens would freeze. For about 20 years, this was the standard method worldwide. Krwawicz admitted that he operated without a surgical microscope and "was ashamed to admit it". Today, newer techniques are used. The Ophthalmologist on Krwawicz.
• Defibrillator in the chest. Michel Mirowski, born in 1924 in Warsaw, built an implantable defibrillator with Morton Mower. The first one was implanted in a patient in 1980 at Johns Hopkins Hospital in Baltimore. Several cardiology journals had previously rejected an article about the prototype. Dzieje.pl on Mirowski.
• Fourteen nominations for the Peace Nobel. Ludwik Zamenhof, the creator of Esperanto (1887), was nominated for the Nobel Peace Prize 14 times between 1907 and 1917, but did not receive the award. Nobel nomination archive.
• Welded bridge near Łowicz. Stefan Bryła designed the bridge in Maurzyce on the Słudwia River (1928–1929), considered the first welded road bridge in the world. Welded railway bridges in the USA were built slightly earlier. During the occupation, Bryła wrote a manual for the Home Army on how to destroy steel bridges. He was executed by the Germans in 1943. Dzieje.pl on Stefan Bryła.
• Chemistry in cosmetics and paints. Krzysztof Matyjaszewski from Carnegie Mellon University co-discovered the ATRP method, or controlled polymer synthesis, in 1995. It is used in coatings, adhesives, cosmetics, and printer inks. Carnegie Mellon University on ATRP.

Popular "Polish inventions" that are myths

Many lists circulating on the internet attribute foreign achievements to Poles. This harms the true stories, as they can easily be undermined. Here are the most common claims and what the sources say.

What could not be confirmed

These stories often appear in articles about Polish inventors. We searched for solid sources for them and found none, so we do not present them as facts.

• Saving King Alfonso XIII of Spain by a carriage lined with Szczepanik's fabric. Sources provide four different years (1901, 1902, 1905, and 1906), and we found no mention of such a carriage in accounts of the 1906 assassination attempt.
• A letter of thanks from King George VI to Kosacki. Even the Warsaw University of Technology states that Kosacki "reportedly" received it. We found no scan or archival record.
• The claim that Kosacki's detector "doubled the demining rate". Sources provide inconsistent numbers.
• The name of the surgeon who operated under Łukasiewicz's lamp in 1853. In popular texts, it appears in two spelling versions, and no reliable source provides the name of the patient.
• The bulletproof vest of Archduke Franz Ferdinand from Szczepanik. According to a text based on material from Culture.pl, this is a "urban legend". War History Online.
• A recording on the Moon. The Kudelski company claims that a miniature tape recorder went on the Apollo mission, but we found no confirmation in NASA sources.
• The number of Kazimierz Funk's nominations for the Nobel Prize. Polish sources state four, but this could not be verified in the Nobel archive.
• The number of Esperanto users. Estimates range from several tens of thousands to about 2 million and are based on various methods.