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Fighter jet pilot demonstrates centripetal force, a concept that Isaac Newton discovered between 1676 and 1677. However, the concept of centripetal force was not actually discovered in a single event or by a single individual but rather evolved over time through the works of multiple scientists and thinkers. Here... is a brief history of the development of our understanding of centripetal force: Ancient Greece: The ancient Greeks, particularly philosophers such as Aristotle and later Archimedes, made observations and formulated theories about the motion of objects. However, they did not have a clear understanding of centripetal force as a distinct concept. Islamic Scholars: During the Islamic Golden Age, scholars such as Ibn Sina (Avicenna) and Ibn Bajjah (Avempace) made significant contributions to the understanding of motion. They discussed the idea of impetus, a precursor to the concept of centripetal force. Johannes Kepler: In the 17th century, Johannes Kepler, a German astronomer and mathematician, formulated his laws of planetary motion. Kepler's laws described the motion of planets around the sun and the concept of elliptical orbits. Although Kepler did not explicitly mention centripetal force, his work laid the foundation for later developments. Isaac Newton: In the late 17th century, Sir Isaac Newton, an English physicist and mathematician, published his groundbreaking work, "Mathematical Principles of Natural Philosophy" (also known as the Principia). In this work, Newton presented his laws of motion and the universal law of gravitation. Newton's laws, particularly the second law of motion, provided a mathematical understanding of centripetal force. He demonstrated that an object moving in a curved path experiences an inward force acting towards the center of the curve, which is now known as centripetal force. Further Developments: Following Newton's work, subsequent scientists, such as Jean le Rond d'Alembert and Daniel Bernoulli, expanded on the understanding of centripetal force in the context of mechanics and fluid dynamics. It's important to note that the discovery and understanding of centripetal force were gradual processes that involved the contributions of numerous individuals over centuries. The concept became firmly established with the development of Newtonian physics and its laws of motion.show more

Historic Vids

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11,803,442 次观看 • 3 年前 •via X (Twitter)

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The fascinating concept of Non-Newtonian fluids, which transition from a liquid state to a solid-like state when pressure is applied, has a rich history that spans several centuries. The study and understanding of these peculiar fluids have evolved over time, leading to a wide range of practical applications and scientific insights. One of the earliest references to Non-Newtonian behavior in fluids dates back to the 17th century when Sir Isaac Newton formulated the basic principles of fluid mechanics. Newton's laws of fluid motion primarily applied to Newtonian fluids, which exhibit constant viscosity and flow behavior regardless of the applied force or pressure. However, it soon became apparent that not all fluids behaved in this predictable manner. In the mid-19th century, a scientist named Thomas Andrews made significant contributions to the understanding of Non-Newtonian fluids. Andrews conducted groundbreaking experiments with carbon dioxide, revealing that under high pressure, this gas could transform into a liquid. This observation marked one of the earliest instances of pressure-induced phase changes in fluids. The term "Non-Newtonian" itself was coined in the 20th century to describe fluids that did not adhere to Newton's classical laws of fluid dynamics. These fluids exhibited a variety of behaviors, but one of the most intriguing was their ability to solidify or increase in viscosity when subjected to stress or pressure. One of the most famous examples of such behavior is cornstarch mixed with water, which forms a substance known as "oobleck" that becomes more solid when pressure is applied. In the modern era, Non-Newtonian fluids have found applications in various fields, including food science, engineering, and material science. They are used in products like quicksand, body armor, and even in the development of impact-resistant materials. One of the key insights that emerged from the study of Non-Newtonian fluids is the importance of understanding the relationship between stress and strain, as well as the influence of time-dependent properties on their behavior. This knowledge has led to advancements in rheology, the study of flow and deformation in materials, and has practical implications in areas such as industrial processing, medicine, and the design of everyday products.

The fascinating concept of Non-Newtonian fluids, which transition from a liquid state to a solid-like state when pressure is applied, has a rich history that spans several centuries. The study and understanding of these peculiar fluids have evolved over time, leading to a wide range of practical applications and scientific insights. One of the earliest references to Non-Newtonian behavior in fluids dates back to the 17th century when Sir Isaac Newton formulated the basic principles of fluid mechanics. Newton's laws of fluid motion primarily applied to Newtonian fluids, which exhibit constant viscosity and flow behavior regardless of the applied force or pressure. However, it soon became apparent that not all fluids behaved in this predictable manner. In the mid-19th century, a scientist named Thomas Andrews made significant contributions to the understanding of Non-Newtonian fluids. Andrews conducted groundbreaking experiments with carbon dioxide, revealing that under high pressure, this gas could transform into a liquid. This observation marked one of the earliest instances of pressure-induced phase changes in fluids. The term "Non-Newtonian" itself was coined in the 20th century to describe fluids that did not adhere to Newton's classical laws of fluid dynamics. These fluids exhibited a variety of behaviors, but one of the most intriguing was their ability to solidify or increase in viscosity when subjected to stress or pressure. One of the most famous examples of such behavior is cornstarch mixed with water, which forms a substance known as "oobleck" that becomes more solid when pressure is applied. In the modern era, Non-Newtonian fluids have found applications in various fields, including food science, engineering, and material science. They are used in products like quicksand, body armor, and even in the development of impact-resistant materials. One of the key insights that emerged from the study of Non-Newtonian fluids is the importance of understanding the relationship between stress and strain, as well as the influence of time-dependent properties on their behavior. This knowledge has led to advancements in rheology, the study of flow and deformation in materials, and has practical implications in areas such as industrial processing, medicine, and the design of everyday products.

Historic Vids

2,632,483 次观看 • 2 年前

Newton's first law of motion, an object remains in the same state of motion unless acted upon by a force

Newton's first law of motion, an object remains in the same state of motion unless acted upon by a force

Science girl

40,940,490 次观看 • 2 年前

In 1687, Isaac Newton introduced his first law of motion, also called the law of inertia, in his book "Principia." This video visualizes that law.

In 1687, Isaac Newton introduced his first law of motion, also called the law of inertia, in his book "Principia." This video visualizes that law.

Historic Vids

6,494,912 次观看 • 2 年前

⚡️🚨 Israeli hostile incursion in southern Lebanon- Al-Manar correspondent: In a blatant aggression, a hostile Israeli force consisting of military jeeps crossed the border and entered the municipal center in the town of Blida, and gunfire was heard during the incursion The fate of one of the municipality's employees who spends the night in it remains unknown after enemy elements entered it The arrival of a Lebanese army force to the surroundings of the Israeli force that infiltrated the vicinity of Blida municipality Small drones and quadcopters accompanying the Israeli force that is still present in the center of Blida municipality after crossing the borders for a distance of 1000 meters The Lebanese army is making urgent contacts with the United Nations forces to intervene and support it in the face of continued Israeli aggression in Blida

⚡️🚨 Israeli hostile incursion in southern Lebanon- Al-Manar correspondent: In a blatant aggression, a hostile Israeli force consisting of military jeeps crossed the border and entered the municipal center in the town of Blida, and gunfire was heard during the incursion The fate of one of the municipality's employees who spends the night in it remains unknown after enemy elements entered it The arrival of a Lebanese army force to the surroundings of the Israeli force that infiltrated the vicinity of Blida municipality Small drones and quadcopters accompanying the Israeli force that is still present in the center of Blida municipality after crossing the borders for a distance of 1000 meters The Lebanese army is making urgent contacts with the United Nations forces to intervene and support it in the face of continued Israeli aggression in Blida

Middle East Observer

125,975 次观看 • 8 个月前

American Muslim scholar, Hamza Yusuf co-founder of the Zaytuna College declares that “the whole concept of an ‘Islamic state’ is a fantasy in the minds of the modern Islamists” & confirms that the vast majority of Muslim states in history were “secular” (see above post for what he means by ‘secular’). As I recently argued in my Oxford Union debate - which we won - the reading into Islamic sources of the modern idea of a unitary legal ‘state’ (dawlah) over all of society, is an anachronism. It is the retrospective imposition of the European Westphalian nation-state concept onto traditional Islamic sources. The word ‘state’ (dawlah) is entirely absent from *all* Islamic sources of Shariah. As is the word ‘law’ (Qānūn) and as is the word ‘constitution’ (Distūr). It is thus impossible for the term ‘Islamic State’ to be anything other than a modernist reading. And Shariah is not a ‘law’ (the concept of unitary legal system did not exist) so there is no such thing as ‘Sharia law’. There is only Shariah (which means ‘the way’). Islam did not define any fixed notion of state, and hence the matter is left to the people to adopt within Islamic parameters. Here is my recent 10 minute Oxford Union debate speech which explains further:

American Muslim scholar, Hamza Yusuf co-founder of the Zaytuna College declares that “the whole concept of an ‘Islamic state’ is a fantasy in the minds of the modern Islamists” & confirms that the vast majority of Muslim states in history were “secular” (see above post for what he means by ‘secular’). As I recently argued in my Oxford Union debate - which we won - the reading into Islamic sources of the modern idea of a unitary legal ‘state’ (dawlah) over all of society, is an anachronism. It is the retrospective imposition of the European Westphalian nation-state concept onto traditional Islamic sources. The word ‘state’ (dawlah) is entirely absent from all Islamic sources of Shariah. As is the word ‘law’ (Qānūn) and as is the word ‘constitution’ (Distūr). It is thus impossible for the term ‘Islamic State’ to be anything other than a modernist reading. And Shariah is not a ‘law’ (the concept of unitary legal system did not exist) so there is no such thing as ‘Sharia law’. There is only Shariah (which means ‘the way’). Islam did not define any fixed notion of state, and hence the matter is left to the people to adopt within Islamic parameters. Here is my recent 10 minute Oxford Union debate speech which explains further:

أبو عمّار

13,298 次观看 • 1 年前

The Hidden Language of Diffusion Models paper page: tackle the challenge of understanding concept representations in text-to-image models by decomposing an input text prompt into a small set of interpretable elements. This is achieved by learning a pseudo-token that is a sparse weighted combination of tokens from the model's vocabulary, with the objective of reconstructing the images generated for the given concept. Applied over the state-of-the-art Stable Diffusion model, this decomposition reveals non-trivial and surprising structures in the representations of concepts. For example, we find that some concepts such as "a president" or "a composer" are dominated by specific instances (e.g., "Obama", "Biden") and their interpolations. Other concepts, such as "happiness" combine associated terms that can be concrete ("family", "laughter") or abstract ("friendship", "emotion"). In addition to peering into the inner workings of Stable Diffusion, our method also enables applications such as single-image decomposition to tokens, bias detection and mitigation, and semantic image manipulation

The Hidden Language of Diffusion Models paper page: tackle the challenge of understanding concept representations in text-to-image models by decomposing an input text prompt into a small set of interpretable elements. This is achieved by learning a pseudo-token that is a sparse weighted combination of tokens from the model's vocabulary, with the objective of reconstructing the images generated for the given concept. Applied over the state-of-the-art Stable Diffusion model, this decomposition reveals non-trivial and surprising structures in the representations of concepts. For example, we find that some concepts such as "a president" or "a composer" are dominated by specific instances (e.g., "Obama", "Biden") and their interpolations. Other concepts, such as "happiness" combine associated terms that can be concrete ("family", "laughter") or abstract ("friendship", "emotion"). In addition to peering into the inner workings of Stable Diffusion, our method also enables applications such as single-image decomposition to tokens, bias detection and mitigation, and semantic image manipulation

AK

41,746 次观看 • 3 年前

Did you know that the French and British invaded Beijing in 1860 in order to force China to legalize opium? British and French looted and destroyed the Old Summer Palace, a massive complex of gardens, palaces, and art. Hundreds of Chinese people were killed, and dozens of the most beautiful architectural structures in the world were looted and burned down. China has left the ruins as a reminder of their history, and as a record of the brutality of Western imperialists.

Did you know that the French and British invaded Beijing in 1860 in order to force China to legalize opium? British and French looted and destroyed the Old Summer Palace, a massive complex of gardens, palaces, and art. Hundreds of Chinese people were killed, and dozens of the most beautiful architectural structures in the world were looted and burned down. China has left the ruins as a reminder of their history, and as a record of the brutality of Western imperialists.

Jason Smith - 上官杰文

435,787 次观看 • 6 个月前

The force that never surrendered and always continues the legitimate war to achieve the state and independence of Kurdistan, a force that defeated the Revolutionary Guards, Hashd, ISIS, missiles and drones of the invaders will not be destroyed. Long live the Kurds and Kurdistan, boys and girls of the Kurdish nation

The force that never surrendered and always continues the legitimate war to achieve the state and independence of Kurdistan, a force that defeated the Revolutionary Guards, Hashd, ISIS, missiles and drones of the invaders will not be destroyed. Long live the Kurds and Kurdistan, boys and girls of the Kurdish nation

Dana Levi דנה🇮🇱🇺🇸

11,689 次观看 • 1 年前

Not everyone knows that one of the greatest scientists and geniuses, Isaac Newton, was also an alchemist and astrologer. He spent much of his life interpreting the Books of Daniel and Revelation in an attempt to calculate the timing of the Apocalypse. He considered the Holy Roman Empire to be the Beast system and calculated that the end times would not occur before around 2060. Why did he consider the Holy Roman Empire to be the Beast system?

Not everyone knows that one of the greatest scientists and geniuses, Isaac Newton, was also an alchemist and astrologer. He spent much of his life interpreting the Books of Daniel and Revelation in an attempt to calculate the timing of the Apocalypse. He considered the Holy Roman Empire to be the Beast system and calculated that the end times would not occur before around 2060. Why did he consider the Holy Roman Empire to be the Beast system?

Open Minded Approach

27,901 次观看 • 20 天前

In Goma during a working visit to the DRC, we met members of the South African Air Force, who are part of the Air Wing of the Force Intervention Brigade under the UN Peacekeeping Force. We are inspired by their courage and mourn the losses they have endured. Condolences to the friends and families of the lives lost during this peace mission. These brave men and women embody our commitment to peace.

In Goma during a working visit to the DRC, we met members of the South African Air Force, who are part of the Air Wing of the Force Intervention Brigade under the UN Peacekeeping Force. We are inspired by their courage and mourn the losses they have endured. Condolences to the friends and families of the lives lost during this peace mission. These brave men and women embody our commitment to peace.

ANC SECRETARY GENERAL | Fikile Mbalula

85,819 次观看 • 1 年前

Meet the Xenobots, they are not machine, they are PROGRAMMABLE biological robots that can REPRODUCE. — The concept of xenobots has been a fascinating topic in the realm of developmental biology, and the latest findings have left me utterly astonished. These microscopic entities have been observed to not only self-assemble into complex forms but also exhibit a level of autonomy and adaptability that challenges our conventional understanding of multicellular organization. The researchers, led by Michael Levin, have successfully demonstrated that embryonic frog cells can spontaneously form into xenobots, which are capable of movement, self-organization, and even communication with one another. These xenobots are not merely passive aggregates of cells but rather dynamic systems that can adapt to their environment and respond to stimuli and be programmed to a degree. What's even more remarkable is that these xenobots have been found to be capable of reproduction. As Eva Jablonka, an evolutionary biologist, noted, "a xenobot may be induced to fragment and form two small ones," which raises the possibility of these entities undergoing a form of evolution. This has significant implications for our understanding of the origins of multicellularity and the evolution of complex life forms. The ability of xenobots to self-organize and adapt to their environment is thought to be mediated by a complex interplay of genetic and environmental factors. Levin suggests that the genome provides a set of rules and tendencies that allow cells to collectively "compute" their own solutions to growth and form, rather than being rigidly determined by a predetermined plan. The potential applications of this research are vast and varied, ranging from regenerative medicine to the development of novel biomaterials to a dystopian nightmare. However, what's most exciting is the prospect of gaining a deeper understanding of the fundamental principles that govern the emergence of complex life forms. As Levin notes, "we need a science of where larger-scale goals come from," and the study of xenobots may provide a key insight into this question. The discovery of xenobots and their remarkable properties has opened up a new frontier in the study of developmental biology and has significant implications for our understanding of the evolution of complex life forms.

Meet the Xenobots, they are not machine, they are PROGRAMMABLE biological robots that can REPRODUCE. — The concept of xenobots has been a fascinating topic in the realm of developmental biology, and the latest findings have left me utterly astonished. These microscopic entities have been observed to not only self-assemble into complex forms but also exhibit a level of autonomy and adaptability that challenges our conventional understanding of multicellular organization. The researchers, led by Michael Levin, have successfully demonstrated that embryonic frog cells can spontaneously form into xenobots, which are capable of movement, self-organization, and even communication with one another. These xenobots are not merely passive aggregates of cells but rather dynamic systems that can adapt to their environment and respond to stimuli and be programmed to a degree. What's even more remarkable is that these xenobots have been found to be capable of reproduction. As Eva Jablonka, an evolutionary biologist, noted, "a xenobot may be induced to fragment and form two small ones," which raises the possibility of these entities undergoing a form of evolution. This has significant implications for our understanding of the origins of multicellularity and the evolution of complex life forms. The ability of xenobots to self-organize and adapt to their environment is thought to be mediated by a complex interplay of genetic and environmental factors. Levin suggests that the genome provides a set of rules and tendencies that allow cells to collectively "compute" their own solutions to growth and form, rather than being rigidly determined by a predetermined plan. The potential applications of this research are vast and varied, ranging from regenerative medicine to the development of novel biomaterials to a dystopian nightmare. However, what's most exciting is the prospect of gaining a deeper understanding of the fundamental principles that govern the emergence of complex life forms. As Levin notes, "we need a science of where larger-scale goals come from," and the study of xenobots may provide a key insight into this question. The discovery of xenobots and their remarkable properties has opened up a new frontier in the study of developmental biology and has significant implications for our understanding of the evolution of complex life forms.

Brian Roemmele

50,780 次观看 • 1 年前

Faraday's Law of Induction ✍️ It describes the phenomenon of how a changing magnetic field around a wire can "force" electricity along its length. As the magnet is moved up and down through the wire coil, the magnetic flux (the number of lines of force) is constantly changing. This constant change leads to an electromotive force (EMF), which behaves like a battery, providing the necessary power for electrons to flow and generate electrical current. The video demonstrates that electricity is not produced simply by placing a magnet near the wire but rather by moving the magnet. The rate at which the magnet is moved dictates how much electricity is created. Nevertheless, as seen from the chart, the movement of electricity ceases completely when the magnet remains stationary, regardless of whether it is inside the coil. Video 📸: py6cj

Faraday's Law of Induction ✍️ It describes the phenomenon of how a changing magnetic field around a wire can "force" electricity along its length. As the magnet is moved up and down through the wire coil, the magnetic flux (the number of lines of force) is constantly changing. This constant change leads to an electromotive force (EMF), which behaves like a battery, providing the necessary power for electrons to flow and generate electrical current. The video demonstrates that electricity is not produced simply by placing a magnet near the wire but rather by moving the magnet. The rate at which the magnet is moved dictates how much electricity is created. Nevertheless, as seen from the chart, the movement of electricity ceases completely when the magnet remains stationary, regardless of whether it is inside the coil. Video 📸: py6cj

ScieVision

27,185 次观看 • 2 个月前

Ministry of National Defense: “A number of SUPER ŞİMŞEK aircraft, developed by TUSAŞ using domestic and national capabilities, have been added to the inventory of our Air Force.” The phrase used by Turkish air force pilot in charge of the presentation to describe the capabilities of Super Şimşek during the exercise; “There is no surface-to-air missile system in the world that we cannot hit”

Ministry of National Defense: “A number of SUPER ŞİMŞEK aircraft, developed by TUSAŞ using domestic and national capabilities, have been added to the inventory of our Air Force.” The phrase used by Turkish air force pilot in charge of the presentation to describe the capabilities of Super Şimşek during the exercise; “There is no surface-to-air missile system in the world that we cannot hit”

TR_tech

16,370 次观看 • 3 个月前

A short while ago, the Israeli Air Force carried out a precision-strike in the area of Sîl just to the south of the Lebanese capital of Beirut, reportedly targeting and eliminating a terrorist responsible for smuggling weapons and advancing terror attacks against Israel on behalf of the Iranian IRGC’s Quds Force.

A short while ago, the Israeli Air Force carried out a precision-strike in the area of Sîl just to the south of the Lebanese capital of Beirut, reportedly targeting and eliminating a terrorist responsible for smuggling weapons and advancing terror attacks against Israel on behalf of the Iranian IRGC’s Quds Force.

OSINTdefender

138,559 次观看 • 1 年前

Unfortunately, I noticed that CENTCOM released footage of the destruction of a historic fighter jet at the 3rd Tactical Fighter Base of the Iranian Air Force in Dezful. It was a decommissioned MiG-23BN of the Iraqi Air Force that had defected to Iran in 1991 and I was trying to have it transferred to the Iranian Air Force Museum in Tehran in 2012. However, the aircraft remained in Hamedan following to my arrest by the Iranian Ministry of Intelligence, and unfortunately this historic aircraft was destroyed today. This MiG-23BN defected to Iran in January 1991 during Operation Desert Storm, and it was one of the over ten MiG-23s that defected to Iran. Unfortunately, almost all of them were scrapped in Dezful and Hamedan and their wreckage were moved to Tehran, and the last one, which was supposed to be displayed in the museum, was finally destroyed by a U.S. Air Force MQ-9A drone in Hamedan. I also noticed that all F-4s of Shahrokhi Air Base had already been evacuated from the base to protect them from the threat of U.S. airstrikes. Therefore, what remained there was this historic MiG-23BN of the Iraqi Air Force, which was parked in one of the hardened aircraft shelters. I never managed to photograph it myself but I have a photo of this in my archive and I will release it. #OperationLionsRoar #OperationEpicFury

Unfortunately, I noticed that CENTCOM released footage of the destruction of a historic fighter jet at the 3rd Tactical Fighter Base of the Iranian Air Force in Dezful. It was a decommissioned MiG-23BN of the Iraqi Air Force that had defected to Iran in 1991 and I was trying to have it transferred to the Iranian Air Force Museum in Tehran in 2012. However, the aircraft remained in Hamedan following to my arrest by the Iranian Ministry of Intelligence, and unfortunately this historic aircraft was destroyed today. This MiG-23BN defected to Iran in January 1991 during Operation Desert Storm, and it was one of the over ten MiG-23s that defected to Iran. Unfortunately, almost all of them were scrapped in Dezful and Hamedan and their wreckage were moved to Tehran, and the last one, which was supposed to be displayed in the museum, was finally destroyed by a U.S. Air Force MQ-9A drone in Hamedan. I also noticed that all F-4s of Shahrokhi Air Base had already been evacuated from the base to protect them from the threat of U.S. airstrikes. Therefore, what remained there was this historic MiG-23BN of the Iraqi Air Force, which was parked in one of the hardened aircraft shelters. I never managed to photograph it myself but I have a photo of this in my archive and I will release it. #OperationLionsRoar #OperationEpicFury

Babak Taghvaee - The Crisis Watch

41,592 次观看 • 3 个月前