The hottest Physics Substack posts right now

And their main takeaways
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Top Science Topics

2.6.2 Newton's Legacy

Fields & Energy • 219 implied HN points • 07 Feb 24
🔬 Science Physics
  1. Newton's laws of motion were groundbreaking but took time to be fully understood and accepted. People did not immediately grasp his ideas about forces and motion.
  2. Many later scientists built on Newton's work, refining and developing his theories. Newton laid the groundwork, but others were key in shaping what we now know as classical physics.
  3. Newton's scientific approach set a high standard for future research. His methods are still considered a model for how scientific investigations should be conducted.

Emerging Stars

Compounding Quality • 216 implied HN points • 08 Feb 24
🔬 Science Physics
  1. Isaac Newton is famous for his Laws of Motion in physics and mathematics.
  2. Newton's Laws of Motion are fundamental to classical mechanics and still widely used today.
  3. This post about Newton's Laws of Motion is for paid subscribers.

Author's Introduction

Fields & Energy • 439 implied HN points • 30 Sep 23
🔬 Science Physics
  1. Physicists and engineers often focus on different aspects of understanding reality. Physicists typically ask 'why' things happen, while engineers ask 'how' to make things work.
  2. Electromagnetism is a key part of our everyday experience, but training in this field has become disconnected between physics theory and practical applications. There's a need for better communication and education between physicists and engineers.
  3. New ideas in science can often be met with skepticism or rejection. It's important to question established norms and be open to fresh perspectives, even if they challenge widely accepted beliefs.

Philosophic Premises of Quantum Mechanics – Part I

Fields & Energy • 359 implied HN points • 12 Nov 23
🔬 Science Physics
  1. Quantum mechanics is often misunderstood, with some believing it challenges objective reality. However, the issues stem from outdated philosophies rather than quantum theory itself.
  2. During the Weimar period in Germany, there was a strong cultural push against reason and causality. This opposition influenced the development of quantum mechanics during that time.
  3. Many scientists who shaped quantum mechanics were caught between supporting the new ideas and adhering to older principles of causality, leading to mixed interpretations of their findings.

Electrons, Alternate Universes, and the Ontological Commitments of Physics: A Handy Guide to Hossenfelder vs. Goff

Philosophy for the People w/Ben Burgis • 319 implied HN points • 03 Dec 23
📖 Philosophy Physics
  1. Philosopher Philip Goff and physicist Sabine Hossenfelder concluded their Twitter debate on electrons and alternate universes.
  2. The discussion highlights the intersection of philosophy and physics in understanding ontological commitments.
  3. The resolution between Goff and Hossenfelder signifies an end to the Great Electron Twitter War of 2023.
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2.4 The Copernican Revolution & the “Horror Vacui”

Fields & Energy • 239 implied HN points • 10 Jan 24
💾 History Physics
  1. Nicolaus Copernicus suggested that the Earth orbits the sun, which was a big change from the earlier belief that everything revolves around the Earth. This idea helped set the stage for modern astronomy.
  2. Competing theories like heliocentrism and geocentrism can both be useful in explaining observations. Sometimes even incorrect models are used because they make calculations easier.
  3. Galileo and other scientists built on Copernicus' ideas, leading to a deeper understanding of motion, gravity, and the nature of vacuums. This helped shift thinking from old beliefs to observations and experiments.

A Cult of Lost Technology

ᴋʟᴀᵾs • 393 implied HN points • 16 May 23
🔬 Science Physics
  1. Ancient structures like Stonehenge and the pyramids across the world raise questions about lost technology and potential ancient civilizations' advanced knowledge.
  2. Nazi scientists explored antigravity technology based on different physics approaches than the West, leading to speculation on advanced tech development during World War II.
  3. The concept of a cargo cult relates to ancient cultures integrating advanced technologies into their beliefs, like indigenous tribes using airdrops as inspiration for rituals.

The Stars, Our Destination?

Everything Is Amazing • 1479 implied HN points • 06 Feb 24
🔬 Science Physics
  1. Space exploration faces challenges like the vastness of space and technological limitations.
  2. JPL has a track record of extending mission goals for spacecraft, showcasing innovation and efficiency.
  3. Theoretical concepts like FTL drives and warp drives may be intriguing, but the feasibility remains uncertain due to scientific principles and practical challenges.

Understanding Gravitational-Wave Observatories: A Pillar of Modern Fundamental Science

Space Ambition • 99 implied HN points • 19 Apr 24
🔬 Science Physics
  1. Gravitational-wave observatories like LIGO help us understand the universe better. They can detect tiny ripples in spacetime caused by huge cosmic events like black hole mergers.
  2. Investing in fundamental science is cost-effective and leads to unexpected technological benefits. For example, the innovations developed for LIGO can also help in industries like manufacturing and quantum computing.
  3. Fundamental science projects prepare us for future challenges, much like a university education does. They provide a foundation that helps scientists and engineers create new technologies and solutions down the line.

Physics Professors Are Using AI Models as Physics Tutors

The Algorithmic Bridge • 552 implied HN points • 27 Dec 24
🕹 Technology Physics
  1. AI is being used by physics professors as personal tutors, showing its advanced capabilities in helping experts learn. This might surprise people who believe AI isn't very smart.
  2. Just like in chess, where computers have helped human players improve, AI is now helping physicists revisit old concepts and possibly discover new theories.
  3. The acceptance of AI by top physicists suggests that even in complex fields, machines can enhance human understanding, challenging common beliefs about AI's limitations.

1.2 A New Understanding

Fields & Energy • 319 implied HN points • 08 Nov 23
🔬 Science Physics
  1. Reality is made up of two separate things: fields and particles. They work together to create the world we see.
  2. Electromagnetism is guided by fields that act like waves, while energy behaves like particles at the quantum level.
  3. This new approach shows that instead of thinking of light as just photons, we should view it as energy guided by fields.

2.6 Isaac Newton

Fields & Energy • 199 implied HN points • 24 Jan 24
🔬 Science Physics
  1. Isaac Newton built his laws of motion and gravitation on the earlier work of scientists like Galileo and Kepler. This helped him connect how things move on Earth with how planets move in space.
  2. Newton discovered that gravity acts in a certain way: the force gets weaker as you move further away from an object. He showed this through thinking about how an apple falls and how the moon orbits the Earth.
  3. To explain the gravitational pull of larger bodies, Newton used advanced math concepts, making his ideas more accurate. He proved that the gravity of a round object is the same as if all its mass was concentrated in one point at its center.

2.7 Summary and Conclusions

Fields & Energy • 159 implied HN points • 21 Feb 24
🔬 Science Physics
  1. Scientists should consider multiple models to explain natural phenomena and not cling to a single theory. Even if an old idea isn't widely accepted anymore, it could still hold value.
  2. Inductive reasoning, based on observations, and deductive reasoning, based on theories, are both vital in scientific discovery. They work together to help us understand the world better.
  3. Our understanding of science evolves over time, with new ideas replacing or revisiting old ones. It's essential to stay open-minded and not assume today's beliefs are the ultimate truth.

O-Day - Another Dimension

Remote View • 353 implied HN points • 03 Mar 23
🔬 Science Physics
  1. The post discusses moving from flat diagrams to a 3D model for better understanding.
  2. It mentions sharing a process to derive a magnetic and gravitational monopole model.
  3. References to scientific works on Dirac monopoles in the content.

⚛️🌟 Our fusion future: A Quick Q&A with … nuclear engineer Michael Ford

Faster, Please! • 456 implied HN points • 21 Jan 25
🔬 Science Physics
  1. Fusion energy has great potential and is seen as safer than fission because it doesn't have the same risks of catastrophic accidents.
  2. Many companies are investing in fusion technology, which is leading to a quicker development pace than in the past.
  3. Public perception and understanding of fusion will be important for its acceptance and can affect the costs and deployment of fusion power systems.

2.1 Ancient Ideas of Atomism & Plenism

Fields & Energy • 219 implied HN points • 20 Dec 23
📖 Philosophy Physics
  1. The concept of atomism began in ancient Greece with philosophers like Leucippus and Democritus, who believed everything is made up of tiny, indivisible particles called atoms. They also thought a void exists where these atoms move.
  2. Democritus' ideas influenced later thinkers like Epicurus, who introduced the idea that atoms can swerve randomly, allowing for free will. Lucretius expanded on this by describing how tiny particles move in ways we can't always see.
  3. Aristotle challenged atomism with his idea of plenism, which suggests everything is filled with matter and there is no empty space. He argued that motion is continuous and depends on the presence of matter all around.

The Fusion Energy Landscape

Ulysses • 359 implied HN points • 05 Apr 23
🔬 Science Physics
  1. Fusion energy promises clean, pollution-free energy that can be built anywhere and lasts millions of years without geopolitical disputes over fuel reserves.
  2. Different fusion technologies like magnetic confinement, inertial confinement, and magneto-inertial confinement offer diverse approaches to achieving fusion reactions with varying benefits and challenges.
  3. Developing fusion energy requires extensive funding, traditional engineering solutions, and expertise underscoring a journey to harness limitless energy potential.

1.5 The Paradigm Shift to a New Model

Fields & Energy • 239 implied HN points • 29 Nov 23
🔬 Science Physics
  1. People often prefer sticking to familiar ideas instead of embracing new ones, which can create mental barriers to understanding change. To overcome this, simplifying complex concepts is important.
  2. Models are tools we use to understand the world around us. Having multiple models allows us to tackle problems from different angles, making us better problem solvers.
  3. Understanding basic principles in science can help anyone grasp more complex ideas without needing extensive knowledge. For example, knowing atoms make up everything can help explain many scientific concepts.

Physics for Everyone, Lecture 2: The Gestalt of Physics, Tools for Seeing

Critical Mass • 12 implied HN points • 22 Jan 26
🔬 Science Physics
  1. Order-of-magnitude thinking uses powers of ten and rough estimates to keep your intuition tied to reality and avoid being fooled by big numbers with false precision.
  2. Approximation (the “super cow” idea) means building simplified models that include only the features you need so messy real-world problems become solvable without misleading yourself.
  3. Dimensional analysis tracks basic units like length, time, and mass to guess the form of answers, catch impossible results, and often derive relationships with minimal detailed information.

Square waves, or non-elephant biology

lcamtuf’s thing • 2040 implied HN points • 18 Apr 23
🔬 Science Physics
  1. Analyzing electronic circuits with square wave signals is more complex than with sine waves.
  2. Square waves can be approximated as a sum of sine waves at the fundamental frequency and odd multiples.
  3. Understanding the behavior of square waves and their harmonics is essential for circuit design and noise suppression.

2.2 Early & Medieval Physics

Fields & Energy • 179 implied HN points • 27 Dec 23
💾 History Physics
  1. The Ptolemaic model explained how planets move in terms of circles and smaller orbits called epicycles. This model was clever, even though it was eventually replaced by simpler ideas in science.
  2. During the Middle Ages, many people thought that science was stuck, but some scholars made important contributions and kept the spirit of experimentation alive, especially figures like Albertus Magnus and Roger Bacon.
  3. The study of more complex shapes, like conic sections, was overlooked for a long time. Eventually, scholars at places like Oxford started to explore motion more deeply and share their findings across Europe.

O-Day - Evening

Remote View • 275 implied HN points • 02 Apr 23
🔬 Science Physics
  1. The O-Day - Evening post discusses the electromagnetic properties of the Great Pyramid.
  2. The post delves into the connections between alchemy, sacred geometry, and the 'Great Work'.
  3. There are references to scientific articles and historical figures within the context of the post.

The Origins of Deutsche Physik (1910s)

Cantor's Paradise • 363 implied HN points • 06 Jan 25
🔬 Science Physics
  1. The conflict in the physics community during the 1910s was largely about differing views on science and the influence of World War I. German physicists felt pressure to defend national pride while dealing with the rise of theoretical physics led by figures like Einstein.
  2. There was a significant clash between experimentalists and theorists, with older physicists struggling to accept new ideas. Many were uncomfortable with Einstein's theories because they felt too abstract and removed from traditional experimental methods.
  3. As political tensions grew, the conflict transformed into overt anti-Semitism, particularly targeting Einstein. Some physicists expressed nationalistic and racial ideologies, which later aligned with the Nazi agenda.

🚀 SpaceX is making a space Mayflower voyage possible

Faster, Please! • 456 implied HN points • 01 Nov 24
🔬 Science Physics
  1. SpaceX is making space travel cheaper and more accessible, which could allow for new settlements in space. This change could make colonizing asteroids a real possibility.
  2. NASA's Artemis program has spent a lot of money without achieving its goals, raising questions about its effectiveness. Some people believe that commercial companies like SpaceX could do these missions more efficiently and at lower costs.
  3. The idea of colonizing other planets can be compared to historical migrations on Earth, showing that private ventures may succeed better than expensive government projects. Learning from past colonization might help humanity settle in space.

1.4 What’s the Benefit of This New Model?

Fields & Energy • 199 implied HN points • 22 Nov 23
🔬 Science Physics
  1. This new model helps us understand how antennas and electromagnetic radiation work better. It shows how waves and fields can create visible effects, like standing waves, which we see in everyday life.
  2. The theory offers answers to old physics puzzles like wave-particle duality. Instead of seeing particles and waves as opposites, they work together as two different things.
  3. It provides solutions to tricky problems in electromagnetism, like radiation reaction and vacuum energy. The model suggests that radiation comes from the applied fields, not just from accelerating charges.

Sabine Hossenfelder promoting fossil fuels over electric vehicles

aukehoekstra • 59 implied HN points • 23 Apr 24
🔬 Science Physics
  1. Sabine Hossenfelder, a popular figure known for her physics background, has been criticized for promoting gasoline cars over electric vehicles.
  2. Electric vehicles can help solve grid issues and contribute positively to the energy system by offering flexibility and potential cost savings.
  3. The sales of electric vehicles continue to rise, with advancements in technology making them more environmentally friendly and cost-effective compared to fossil fuel cars.

O-Day - Wormhole

Remote View • 216 implied HN points • 09 Mar 23
🔬 Science Physics
  1. The presentation shared experimental evidence about the operation of the Great Pyramid of Giza.
  2. Macro photography gave a first look at the sample and detailed study of the disruption zone.
  3. Speculation was made about the use of iron as a possible fuel, along with other metals, in a related process.

O-Day - Explaining Frank Polifka's Windhexe

Remote View • 216 implied HN points • 30 Mar 23
🔬 Science Physics
  1. A technology called Windhexe can turn various materials into powder, even turning gravel to dust and reducing waste into powder.
  2. The Windhexe device functions by creating a tornado-like vortex in a chamber, causing materials to be smashed and pulverized into tiny particles.
  3. Windhexe technology has been used by different companies for processing food wastes, manufacturing debris, and even for drying materials quickly.

1.3 Wait... That's All There Is To It?

Fields & Energy • 179 implied HN points • 15 Nov 23
🔬 Science Physics
  1. To understand how fields guide energy, you need to think deeply about concepts like light and electromagnetic waves. This involves understanding how energy balances between electric and magnetic forms.
  2. There's a new way to look at electromagnetism that contradicts a lot of what we've assumed for over a century. This new view can help explain some confusing aspects of quantum mechanics.
  3. Even though electromagnetism seems fully understood, there’s still room for fresh ideas that could change our understanding. Just like a miner finding new gems in a familiar mine, new insights might be waiting to be discovered.

1.6 The Plan & Purpose of this Book

Fields & Energy • 159 implied HN points • 06 Dec 23
🔬 Science Physics
  1. The book discusses two big ideas in physics: particles versus waves and two different ways of understanding nature. This involves looking at how scientists have debated these ideas over time.
  2. It introduces a new way of thinking about electromagnetism, saying that fields and energy are separate but related. Fields behave like waves, while energy can act like particles.
  3. Finally, the book explores how this fresh perspective can change our view of quantum mechanics, suggesting that light and energy might interact in ways we don't typically understand.

How to Measure Molecules

Asimov Press • 367 implied HN points • 17 Nov 24
🔬 Science Physics
  1. In the late 19th century, Lord Rayleigh measured the size of a single molecule using simple materials like oil and water. This clever experiment showed how basic observations can lead to important scientific discoveries.
  2. Benjamin Franklin also made significant observations about oil on water in the 18th century, but he didn't calculate the size of molecules. His work laid the groundwork for future scientists like Rayleigh.
  3. Rayleigh's experiment demonstrated that you don’t always need complex tools to make groundbreaking discoveries. Even simple experiments can provide valuable insights that inspire later research.

Astronomy and space exploration are shaping our civilization landscape

Space Ambition • 219 implied HN points • 21 Jul 23
🔬 Science Physics
  1. Space exploration has greatly influenced our technology and daily lives. From GPS navigation to weather monitoring, many devices we use today were developed because of our quests in space.
  2. Astronomy helped ancient civilizations in navigation and timekeeping. By studying stars, early navigators found their way, and calendars were created to track important agricultural and religious events.
  3. The study of dark matter and other cosmic phenomena might lead to groundbreaking discoveries in the future. These studies could bring about new technologies and a better understanding of our universe.

O-Day - Morning, not mourning

Remote View • 196 implied HN points • 12 Feb 23
🔬 Science Physics
  1. Discussion on the potential challenges of working technologies
  2. Caution needed when dealing with Fractal Toroidal systems to ensure safety
  3. Respectful treatment of developments in science and technology is essential

(Ad-free Video) What's New in Science With Sabine and Lawrence | Fusion Dark Matter, String Theory in Biology, and Rapid Evolution

Critical Mass • 3 implied HN points • 13 Feb 26
🔬 Science Physics
  1. Future fusion reactors might produce axion-like particles through neutron–lithium reactions in their shielding, offering a new way to search for very light, weakly interacting dark-matter candidates.
  2. Quantum interference has been observed with clusters of thousands of atoms, pushing the boundary of everyday quantum effects and reigniting debate about whether wavefunction collapse is a real physical process.
  3. Cross-disciplinary methods are yielding surprises: string-theory math and AI are being applied to biological and mathematical problems, evidence suggests life rebounded faster after the Chicxulub impact, and some tumors can hijack nerve signaling to suppress local immunity.

Foundations of Physical Theory: Function of Models

Fields & Energy • 3 HN points • 02 Sep 24
🔬 Science Physics
  1. Models in physics help us understand complex ideas by simplifying them into more relatable forms. They allow us to reason about things we can't observe directly.
  2. It's important to consider the medium through which forces act, rather than just thinking of actions at a distance. This helps explain phenomena like electricity and magnetism more clearly.
  3. Using analogies can be helpful in learning new concepts, but we must be careful not to confuse them with the actual properties of the things we are studying.

Optimal (Quantum) Thermometry- Pt1

The Quantum Observer • 98 implied HN points • 12 Jan 24
🔬 Science Physics
  1. Measurements in quantum systems can benefit from uncertainty estimates for accuracy.
  2. Using qubits themselves as thermometers can help in ensuring proper thermal environment.
  3. The Fisher Information can provide insights into temperature sensitivity of qubits and other quantum systems.

Quantum Quandaries

do clouds feel vertigo? • 19 implied HN points • 21 Jun 24
🔬 Science Physics
  1. Quantum Country is a great book for learning about quantum computing. It's easy to understand if you know some basic math.
  2. Thinking about problems in more than two dimensions can open up new ideas. It can be really helpful to have extra complexity in your thinking.
  3. There’s a board game called Entanglion that teaches quantum logic in a fun way. It's a creative way to see quantum concepts in action.