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This Day in History - Science is an podcast that attempts to explores the remarkable moments that shaped the scientific landscape. Each episode, we journey back in time to rediscover...
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This Day in History - Science is an podcast that attempts to explores the remarkable moments that shaped the scientific landscape. Each episode, we journey back in time to rediscover groundbreaking discoveries, pivotal inventions, and the fascinating individuals who dared to push the boundaries of knowledge. From the invention of the light bulb to the discovery of DNA, we delve into the stories behind the science that changed our world.Listen to This Day in History - Science to:
Subscribe to This Day in History - Science on your favorite podcast app today!
show less
- Learn about the most important scientific discoveries of all time
- Meet the brilliant minds who made them possible
- Understand how science has shaped our world
- Be inspired to explore your own curiosity about science
Subscribe to This Day in History - Science on your favorite podcast app today!
- history
- discovery
- invention
- innovation
- technology
- medicine
- space
- exploration
- education
- learning
Transcribed
21 NOV 2024 · On November 21, 1877, Thomas Edison announced his invention of the phonograph, a device that could record and play back sound. This groundbreaking invention changed the world of music and communication forever.
The story goes that Edison was working on a machine to transcribe telegraph messages through indentations on paper tape when he came up with the idea of recording telephone messages. He began experimenting with a diaphragm that had an embossing point and was held against rapidly moving paraffin paper. To his amazement, the machine was able to record and play back sound.
Edison's early phonograph recordings were indented on tinfoil sheets wrapped around a rotating metal cylinder. He recorded the nursery rhyme "Mary Had a Little Lamb" and was astonished when he heard the machine play it back to him. This was the first time a human voice had been recorded and reproduced.
News of Edison's invention quickly spread, and he became a celebrity overnight. The phonograph was a sensation, and people marveled at the idea of being able to capture and replay sound. Edison took his phonograph on tour and demonstrated it to audiences, who were fascinated by the device.
While the early phonographs were crude and the sound quality was poor, Edison's invention laid the foundation for the recording industry we know today. Over time, improvements were made, and the phonograph evolved into the record player, which dominated the music industry for decades until the advent of digital recording.
Edison's phonograph not only revolutionized the music industry but also had far-reaching effects on education, business, and communication. It allowed for the preservation of speeches, cultural heritage, and important historical moments. The ability to record and distribute sound changed the way people learned, entertained themselves, and shared information.
In conclusion, Thomas Edison's announcement of the phonograph on November 21, 1877, was a pivotal moment in the history of science and technology. It showcased Edison's incredible inventiveness and creativity and paved the way for countless innovations in the field of sound recording and reproduction.
Transcribed
20 NOV 2024 · On November 20, 1889, astronomer Edwin Hubble was born in Marshfield, Missouri. Hubble's work revolutionized our understanding of the universe and laid the foundation for modern cosmology.
In the 1920s, while working at the Mount Wilson Observatory in California, Hubble made groundbreaking discoveries using the observatory's Hooker Telescope, which was the largest telescope in the world at the time. He observed that the Andromeda Nebula was actually a separate galaxy from our own Milky Way, proving the existence of galaxies beyond our own. This discovery expanded the known size of the universe immensely.
Hubble continued to study galaxies and made another remarkable discovery: he noticed that the galaxies appeared to be moving away from Earth, and the farther away they were, the faster they seemed to be moving. This observation led to the formulation of Hubble's Law, which states that the universe is expanding uniformly.
The idea of an expanding universe supported the Big Bang theory, proposed by Georges Lemaître, which suggests that the universe began from an initial point and has been expanding ever since. Hubble's observations provided the first observational evidence for the Big Bang theory, which has since become the prevailing cosmological model.
The Hubble Space Telescope, named in Edwin Hubble's honor, was launched into orbit in 1990 and has been providing stunning images and invaluable data about the cosmos ever since, enabling astronomers to study distant galaxies, planets, and celestial objects in unprecedented detail.
Edwin Hubble's birthday, November 20, is a significant date in the history of science, as it marks the birth of a pioneering astronomer whose work transformed our understanding of the universe and our place within it.
Transcribed
19 NOV 2024 · On November 19, 1969, Apollo 12, the second crewed mission to land on the Moon, launched from the Kennedy Space Center in Florida. The mission was commanded by Charles "Pete" Conrad Jr., with Richard F. Gordon Jr. as the Command Module Pilot and Alan L. Bean as the Lunar Module Pilot.
The launch was not without its challenges. Just 36 seconds after liftoff, the Saturn V rocket was struck by lightning twice, causing a temporary loss of power and telemetry. However, the quick thinking of flight controller John Aaron, who remembered a similar problem from a simulation, saved the day. He suggested a "SCE to AUX" switch, which restored telemetry and allowed the mission to continue.
Five days later, on November 24, Conrad and Bean successfully landed the Lunar Module (LM) Intrepid in the Moon's Ocean of Storms, near the Surveyor 3 probe, which had soft-landed on the Moon in 1967. This was the first precision landing on the Moon, demonstrating the ability to land close to a pre-selected location.
During their two moonwalks, Conrad and Bean deployed the Apollo Lunar Surface Experiments Package (ALSEP), collected lunar samples, and even visited the Surveyor 3 probe, removing some of its parts to return to Earth for analysis. They spent a total of 31.5 hours on the lunar surface.
Meanwhile, Gordon remained in lunar orbit aboard the Command Module Yankee Clipper, conducting scientific observations and photographing landing sites for future missions.
The Apollo 12 mission successfully concluded on November 24, with the astronauts splashing down safely in the Pacific Ocean, where they were recovered by the USS Hornet. The mission further demonstrated the capabilities of the Apollo program and paved the way for more extensive lunar exploration in the missions that followed.
Transcribed
18 NOV 2024 · On November 18, 1883, American and Canadian railroads began using four continental time zones to standardize time and reduce confusion for passengers and train operations. Before this momentous change, each city had its own local time based on its longitude, resulting in a chaotic mess of conflicting timetables.
The adoption of the time zones was the brainchild of Sir Sandford Fleming, a Scottish-Canadian engineer and inventor. Fleming had experienced firsthand the difficulties of coordinating train schedules using local times during his work on the Intercolonial Railway in Canada.
In 1879, Fleming proposed a worldwide standard time system at a meeting of the Royal Canadian Institute. His plan divided the world into 24 time zones, each spanning 15 degrees of longitude and differing by one hour. Despite initial resistance, his idea gained traction, and in 1884, an international conference in Washington, D.C., adopted a version of Fleming's proposal, establishing the Prime Meridian at Greenwich, England.
The implementation of the time zones in North America on November 18, 1883, was a significant milestone in the history of timekeeping and transportation. It not only made train travel more efficient and less confusing but also paved the way for the worldwide adoption of a standardized time system, which has become an integral part of modern life.
Today, we take standardized time zones for granted, but it's important to remember that this now-essential system results from innovative problem-solving and international cooperation in the late 19th century.
Transcribed
17 NOV 2024 · On November 17, 1970, the Soviet Union successfully landed the robotic spacecraft Luna 17 on the Moon's surface. This historic event marked the first time a remote-controlled robot, called Lunokhod 1, explored the lunar surface.
Lunokhod 1, which means "Moonwalker" in Russian, was a remarkable feat of engineering. The rover was equipped with various scientific instruments, including an X-ray fluorescence spectrometer, a penetrometer to test the soil's mechanical properties, and radiation detectors. Powered by solar cells and a radioisotope heater, Lunokhod 1 could operate during the harsh lunar nights.
The rover was designed to explore the Moon's surface, collect data, and transmit the information back to Earth. It had eight wheels, each independently powered, allowing it to traverse the rugged lunar terrain. Cameras mounted on the rover provided breathtaking panoramic images of the Moon's landscape.
During its mission, Lunokhod 1 traveled a total distance of 10.5 kilometers (6.5 miles) across the Mare Imbrium (Sea of Rains) region. It analyzed soil samples, studied the lunar environment, and provided valuable data that helped scientists better understand the Moon's composition and formation.
The success of Lunokhod 1 was a significant milestone in the history of space exploration and robotics. It paved the way for future lunar and planetary missions, demonstrating the feasibility of using remote-controlled robots to explore celestial bodies.
Today, the legacy of Lunokhod 1 continues to inspire scientists and engineers worldwide, as we strive to unravel the mysteries of the universe and push the boundaries of space exploration.
Transcribed
16 NOV 2024 · On November 16, 1938, a remarkable discovery was made in the field of nuclear physics that would change the course of history. On this day, German chemists Otto Hahn and Fritz Strassmann, along with Austrian physicist Lise Meitner, conducted a groundbreaking experiment that led to the discovery of nuclear fission.
Hahn and Strassmann were studying the effects of bombarding uranium with neutrons, expecting to create heavier elements. However, to their surprise, they found that the uranium had split into two lighter elements, barium and krypton. This unexpected result puzzled the scientists, as it contradicted the prevailing belief that atomic nuclei could not be broken apart.
Lise Meitner, who had collaborated with Hahn for years but was forced to flee Nazi Germany due to her Jewish heritage, received a letter from Hahn describing the perplexing results. Meitner and her nephew, Otto Frisch, worked on interpreting the data and came to a stunning realization: the uranium nucleus had indeed split in two, releasing a tremendous amount of energy in the process. They coined the term "nuclear fission" to describe this phenomenon.
The discovery of nuclear fission had profound implications for both science and world history. It paved the way for the development of nuclear power as a new energy source, promising to revolutionize the way we generate electricity. However, it also opened the door to the creation of nuclear weapons, which would forever change the nature of warfare and international relations.
The work of Hahn, Strassmann, and Meitner was recognized as a major milestone in science. In 1944, Otto Hahn was awarded the Nobel Prize in Chemistry for his role in the discovery of nuclear fission. Sadly, Lise Meitner's contributions were overlooked at the time, despite her crucial role in interpreting the experimental results and providing the theoretical explanation for the phenomenon.
Today, November 16 is remembered as a pivotal moment in the history of science, marking the beginning of the atomic age and the unleashing of the power of the atom. The discovery of nuclear fission continues to shape our world, from the ongoing debate over nuclear energy to the global efforts to prevent the spread of nuclear weapons. It serves as a reminder of the incredible potential of scientific research to transform our understanding of the universe and the responsibility that comes with such knowledge.
Transcribed
15 NOV 2024 · On November 15th in Science History, one significant event occurred in 1971 when the first spacecraft to orbit another planet was launched. NASA's Mariner 9 mission took off from Cape Canaveral, Florida, on a journey to explore Mars.
Mariner 9 was designed to map the Martian surface and study its atmosphere, providing scientists with unprecedented data about our neighboring planet. The spacecraft reached Mars on November 14, 1971, but had to wait for a global dust storm to subside before it could begin its primary mission.
Once the storm cleared, Mariner 9 began to reveal the true nature of Mars. It discovered massive volcanoes, including Olympus Mons, the largest known volcano in the solar system, standing at an impressive height of nearly 22 km (13.6 miles). The spacecraft also found evidence of ancient river beds and canyons, including the colossal Valles Marineris, a system of canyons that stretches over 4,000 km (2,500 miles) across the Martian surface.
These discoveries revolutionized our understanding of Mars, suggesting that the planet had a more complex and dynamic geological history than previously thought. The presence of ancient river beds and canyons hinted at the possibility that liquid water once flowed on the surface of Mars, raising questions about the planet's potential to support life in the past.
Mariner 9's mission paved the way for future Mars exploration, including the Viking missions and the more recent Mars rovers, such as Curiosity and Perseverance. The data gathered by Mariner 9 continues to be analyzed and studied by scientists today, as we strive to unravel the mysteries of the Red Planet and search for signs of past or present life beyond Earth.
Transcribed
14 NOV 2024 · On November 14, 1666, the first blood transfusion was performed on a human being. The transfusion was conducted by English physician Richard Lower, who successfully transfused blood from one dog to another a year earlier. Lower's groundbreaking work laid the foundation for modern blood transfusion practices, which have saved countless lives over the centuries.
The recipient of the first human blood transfusion was a young man named Arthur Coga, who had been suffering from a mental illness. Lower believed that by transfusing blood from a healthy animal into Coga's body, he could cure the man's condition. In the procedure, Lower used a goose quill to connect a vein in Coga's arm to a vein in a lamb's neck, allowing the lamb's blood to flow into Coga's body.
While Coga reportedly felt better immediately after the transfusion, the effects were short-lived, and he ultimately did not experience any long-term benefits from the procedure. In fact, Lower's use of animal blood in human transfusions proved to be a dangerous practice, as the differences between human and animal blood can cause severe immune reactions and even death.
Despite the limitations of Lower's early experiments, his work marked a significant milestone in the history of medicine and paved the way for further research into blood transfusion. In the centuries that followed, scientists would discover the existence of different blood types and develop safe methods for transfusing blood between human donors and recipients.
Today, blood transfusion is a routine medical procedure that is performed millions of times each year, helping to save the lives of people suffering from a wide range of conditions, from acute blood loss to chronic illnesses like sickle cell anemia. The pioneering work of Richard Lower and other early scientists laid the groundwork for this life-saving technology, and their contributions continue to be celebrated and remembered to this day.
Transcribed
13 NOV 2024 · On November 13, 1971, the Mariner 9 spacecraft became the first to orbit another planet when it successfully entered orbit around Mars. Launched by NASA on May 30, 1971, Mariner 9 was designed to study the Martian surface and atmosphere in unprecedented detail.
Upon arriving at Mars, Mariner 9 encountered a massive dust storm that obscured the planet's surface. However, as the storm subsided, the spacecraft began sending back clear images that revolutionized our understanding of the Red Planet. The mission revealed the existence of massive volcanoes, extensive canyon systems, and evidence of past water activity on the Martian surface.
One of the most significant discoveries made by Mariner 9 was the Valles Marineris, a vast canyon system stretching over 4,000 kilometers (2,500 miles) across the Martian equator. This geological wonder, named after the spacecraft itself, is now known to be one of the largest canyons in the Solar System, dwarfing the Grand Canyon on Earth.
Mariner 9 also provided detailed images of Martian volcanoes, including Olympus Mons, the largest known volcano in the Solar System. Standing at an impressive height of nearly 22 kilometers (13.6 miles), Olympus Mons is almost three times taller than Mount Everest.
The spacecraft's findings also included evidence of ancient river valleys and flood plains, suggesting that liquid water once flowed on the surface of Mars. This discovery was a crucial step in understanding the planet's geological history and its potential for harboring life in the past.
Mariner 9's successful mission paved the way for future Mars explorations, including the Viking program and more recent missions like Mars Pathfinder, Spirit, Opportunity, Curiosity, and Perseverance. The spacecraft operated until October 1972, when it exhausted its supply of attitude control gas and was subsequently deactivated.
The achievements of Mariner 9 on November 13, 1971, marked a significant milestone in the exploration of our Solar System and greatly expanded our knowledge of Mars, setting the stage for the continued study of our intriguing planetary neighbor.
Transcribed
12 NOV 2024 · On November 12, 1980, the Voyager 1 spacecraft made its closest approach to Saturn, marking a significant milestone in the exploration of our solar system. Launched on September 5, 1977, as part of NASA's Voyager program, the spacecraft had already visited Jupiter in 1979 and was now set to study Saturn, its rings, and its moons in unprecedented detail.
As Voyager 1 flew within 124,000 kilometers (77,000 miles) of Saturn's cloud tops, it captured a treasure trove of scientific data and stunning images. The spacecraft discovered new details about Saturn's atmosphere, including its wind speeds, temperature, and composition. It also studied the planet's magnetic field and the interaction between the solar wind and Saturn's magnetosphere.
One of the most remarkable findings was the intricacy and complexity of Saturn's ring system. Voyager 1's images revealed the rings to be made up of countless individual particles, ranging in size from tiny dust grains to large boulders. The spacecraft also discovered several new ringlets and gaps, including the Keeler and Encke Gaps.
Voyager 1 also conducted close flybys of several of Saturn's moons, including Titan, Mimas, Enceladus, Tethys, Dione, and Rhea. The data collected during these encounters provided new insights into the moons' geology, surface features, and potential for harboring life. The most intriguing of these moons was Titan, which was found to have a thick, hazy atmosphere rich in nitrogen and hydrocarbons, hinting at the possibility of complex organic chemistry.
After its successful mission at Saturn, Voyager 1 continued its journey, becoming the first human-made object to enter interstellar space in August 2012. Its sibling, Voyager 2, also visited Saturn in 1981 before going on to explore Uranus and Neptune.
The Voyager missions, and particularly Voyager 1's flyby of Saturn on November 12, 1980, have left an indelible mark on the history of space exploration and our understanding of the solar system. The data and images collected during these missions continue to be analyzed and studied by scientists worldwide, providing new insights and inspiring future generations of explorers.
This Day in History - Science is an podcast that attempts to explores the remarkable moments that shaped the scientific landscape. Each episode, we journey back in time to rediscover...
show more
This Day in History - Science is an podcast that attempts to explores the remarkable moments that shaped the scientific landscape. Each episode, we journey back in time to rediscover groundbreaking discoveries, pivotal inventions, and the fascinating individuals who dared to push the boundaries of knowledge. From the invention of the light bulb to the discovery of DNA, we delve into the stories behind the science that changed our world.Listen to This Day in History - Science to:
Subscribe to This Day in History - Science on your favorite podcast app today!
show less
- Learn about the most important scientific discoveries of all time
- Meet the brilliant minds who made them possible
- Understand how science has shaped our world
- Be inspired to explore your own curiosity about science
Subscribe to This Day in History - Science on your favorite podcast app today!
- history
- discovery
- invention
- innovation
- technology
- medicine
- space
- exploration
- education
- learning
Information
| Author | QP-2 |
| Organization | William Corbin |
| Categories | Science |
| Website | - |
| corboo@mac.com |
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