The hottest Physics Substack posts right now

And their main takeaways
Category
Top Science Topics

O-Day - NOON

Remote View • 157 implied HN points • 14 Feb 23
🔬 Science Physics
  1. There is a livestream event on Feb 14, 2023 at 21:00 CET, so review previous materials beforehand.
  2. The post includes a list of references discussing various topics like solitons, plasmoids, and symbols from different cultures.
  3. The content hints at connections between ancient symbols, cosmic powers, and historical artifacts, suggesting deeper meanings or connections.

Links for 2024-01-27

Axis of Ordinary • 78 implied HN points • 27 Jan 24
🔬 Science Physics
  1. AI advancements are improving without human intervention.
  2. New scientific discoveries challenge current understanding of the universe and human history.
  3. Discussions about progressive politics, Biden administration decisions, and international military relations are ongoing.

The Myth of Stagnation

Extropic Thoughts • 137 implied HN points • 14 Aug 23
🔬 Science Physics
  1. The claim that longer life leads to boredom and stagnation is a narrow-minded view.
  2. Distinguishing between seeking immortal life and seeking indefinitely long life is crucial.
  3. Humans have the potential to continuously evolve, innovate, and avoid stagnation in the face of limitless possibilities.

Bowling strikes, bioinspired enamel materials, and unbeatable squash shot strategies

The Strategy Toolkit • 17 implied HN points • 10 Nov 25
🎾 Sports Physics
  1. To hit a perfect strike in bowling, players need to focus on the right spin, speed, and the oil pattern on the lane. These factors help increase the chances of hitting the headpin effectively.
  2. By increasing the angle at which the bowling ball hits the headpin, players can create better deflection and make strikes more consistent.
  3. Using rotation and the right speed allows the ball to transition from sliding on the oil to rolling properly, which is crucial for achieving strikes repeatedly.
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All Part of Science's Rich Tapestry

Counting Atoms • 58 implied HN points • 08 Feb 24
🔬 Science Physics
  1. The book 'The Making of the Atomic Bomb' by Richard Rhodes provides a comprehensive history of the Manhattan Project and includes a lot of vivid scientific details.
  2. Leo Szilard plays a central role in the story, from inspiring the idea of nuclear chain reactions to trying to prevent the use of atomic bombs.
  3. The book can be overwhelming due to the multitude of people and organizations involved, but it offers a rich tapestry of science and history.

Left-hand threads

J ROBERT CLARK - MAKES • 117 implied HN points • 24 Mar 23
🔬 Science Physics
  1. Regular threads are righty tighty, lefty loosie.
  2. Left-hand threads are the opposite, lefty tightie, righty loosie.
  3. Left-hand threads exist to keep things from coming loose and can be counterintuitive.

Possible states the earth can evolve to

Climate Water Project • 117 implied HN points • 27 Apr 23
🔬 Science Physics
  1. There are different stable states that the ecosystem+hydrological system can evolve to, given large enough perturbations.
  2. Vegetation affects the climate and vice versa, leading to different stable states like forests or grasslands.
  3. The earth can have metastable states with ice or more vegetation, flipping between them due to factors like sunlight and noise in the climate system.

Top 5 blockers to establish a foothold on Mars

Space Ambition • 259 implied HN points • 09 Dec 22
🔬 Science Physics
  1. To go to Mars, we really need to improve how we use fuel and build bigger rockets. Right now, our technology just isn’t strong enough.
  2. Living in space for a long time means we need larger spaceships with essential comforts like food and water. Making these spaceships in space instead of on Earth might be a smart solution.
  3. Radiation on Mars is a big health risk since it doesn't have a magnetic field like Earth. We need to find ways to protect astronauts from this danger while they explore.

The binary sphere packing problem

A Piece of the Pi: mathematics explained • 54 implied HN points • 12 Jul 25
🔬 Science Physics
  1. The best way to pack spheres to use space efficiently is known thanks to a theory called the Kepler conjecture. It shows that no arrangement can be denser than stacking spheres in a certain structured way.
  2. When packing two types of spheres together, it’s possible to fill more space than just using one size. An ideal ratio of the sizes can help maximize how much space is used.
  3. Researchers are still working on the binary packing problem to determine how densely two sizes of spheres can fill space. They have found hints that a specific size ratio might help achieve the best packing.

Quantum Hardware Course!

Quantum Formalism • 99 implied HN points • 04 Aug 23
🔬 Science Physics
  1. Quantum Hardware Course offered by Zaiku Group covers various quantum hardware models like Quantum Optical Models, Ion Traps, Nuclear Magnetic Resonance, and Superconductivity.
  2. Prerequisites for the course include knowledge of quantum mechanics and quantum optics concepts, with references to specific readings.
  3. Enrollment for live sessions and certification in the course require commitment and completion of the entire program by applicants.

Driving fans

Only Wonder Knows • 98 implied HN points • 25 May 23
🔬 Science Physics
  1. Understanding basic physics is crucial when dealing with fan systems.
  2. The relationship between air flow and air pressure in fan systems is not always linear.
  3. When selecting a fan for a system, consider factors like power consumption, flow specifications, and current consumption.

Time in a timeless universe (part 2)

Sam’s Newsletter • 98 implied HN points • 09 Mar 23
🔬 Science Physics
  1. Newton introduced the concept of absolute time, separate from change that physical systems undergo.
  2. Absolute time is an ethereal concept outside our universes, while clock time is a more physical representation of time.
  3. Barbour proposed a theory of time where different 'times' are viewed as different 'worlds' coexisting in a timeless block.

Weekly Dose of Optimism #131

Not Boring by Packy McCormick • 113 implied HN points • 14 Feb 25
🔬 Science Physics
  1. A deep-sea telescope called KM3NeT has detected the highest-energy neutrino ever recorded, which could help scientists learn more about extreme cosmic events like black holes.
  2. A new blood test named PAC-MANN can detect pancreatic cancer early and accurately, potentially improving survival rates for patients.
  3. Anduril is taking over a big military project to develop augmented reality headsets for the U.S. Army, which could enhance soldiers' performance on the battlefield.

Are Stars Conscious?

Secretum Secretorum • 707 implied HN points • 16 Feb 23
🔬 Science Physics
  1. Some scientists challenge the traditional definition of life, suggesting that stars exhibit life-like behaviors such as metabolism and reproduction.
  2. There are radical theories proposing that stars possess consciousness and engage in purposeful actions, influencing life on Earth.
  3. The concept of cosmological natural selection suggests that black holes may play a role in giving rise to new universes, embodying evolutionary principles at a cosmic scale.

Games in projective space

A Piece of the Pi: mathematics explained • 48 implied HN points • 16 Jun 25
🔬 Science Physics
  1. Projective geometry removes the concepts of distance and parallel lines, which changes how we think about shapes and space. It's a unique way to understand geometry differently.
  2. In projective space, there are still points, lines, and planes, but the rules are different from traditional geometry. This can lead to interesting and complex interactions.
  3. Games can be explored in the context of projective space, allowing for creative new strategies and outcomes based on its unique properties.

Will space travel force us to think dynamically about radiation harm?

Gordian Knot News • 124 implied HN points • 15 Nov 24
🔬 Science Physics
  1. Space travel could change how we understand radiation harm. Instead of just focusing on the total dose of radiation, we might need to consider how our bodies repair damage over time.
  2. Current models for analyzing radiation risk might not be suitable for space conditions. This means we may need new methods to ensure astronaut safety during missions.
  3. NASA's practices suggest that the traditional ideas about radiation limits might be too strict. If we can adapt these rules, it could help both space travel and the use of nuclear energy on Earth.

Fast Biology

Asimov Press • 270 implied HN points • 20 Feb 24
🔬 Science Physics
  1. The concept of viewing time differently through the lens of the Minute Man and the Millennium Man prompts questions about our understanding of speed and time in the world.
  2. Biological processes at the cellular level can occur at astonishing speeds, with enzymes performing millions of chemical reactions per second and protein 'motors' spinning thousands of times a minute.
  3. Scientists use innovative experiments to directly observe rapid biological processes, such as watching ATP synthase spin or tracking ribosomes moving along messenger RNA strands, to gain a deeper understanding of the intricate workings of life.

The Day My Project Went to Space

The Palindrome • 2 implied HN points • 02 Feb 26
🔬 Science Physics
  1. Space experiments demand massive behind-the-scenes work: detailed proposals, strict approvals, extensive documentation, and coordination with agencies.
  2. Consumer mobile IMUs can be used in microgravity but pose real challenges—orientation tracking, gravity removal, sensor bias, and noise make trajectory reconstruction hard and require careful calibration and advanced integration methods.
  3. Leading a flight experiment often means becoming a full‑stack engineer: build a simple, robust flight-ready app, pass platform and agency reviews, run thorough tests, and use quick prototypes or ML demos to validate and showcase the work.

Summer haze comes with ink

Vesuvius Challenge • 34 implied HN points • 04 Jul 25
🔬 Science Physics
  1. Researchers are using advanced scanning techniques to read ancient carbonized scrolls. They hope to find ways to read more ink that isn't visible to the naked eye.
  2. They are experimenting with different scanning methods and technologies to better capture the details of the scrolls.
  3. The research team is committed to sharing their findings more often to keep the community updated on their progress.

Bell's Inequality - Guide and Walkthrough

Donkeyspace • 6 implied HN points • 08 Dec 25
🔬 Science Physics
  1. Bell's theorem shows that the universe is fundamentally non-local, meaning particles can be connected no matter how far apart they are. This idea challenges our traditional understanding of space and distance.
  2. The CHSH game illustrates how entangled particles can outperform classical strategies by showing that Alice and Bob can get better results by measuring angles differently. This surprising outcome demonstrates the strange nature of quantum mechanics.
  3. Understanding Bell's inequality reshapes how we see physical laws; it's more like a set of logical rules rather than forces acting on objects. This perspective changes how we think about the universe and its fundamental nature.

Constructing space-filling curves

A Piece of the Pi: mathematics explained • 90 implied HN points • 30 Dec 24
🔬 Science Physics
  1. Space-filling curves, like the Hilbert curve, can fill a whole area by connecting points in a specific way through iterations. They start small and grow by adding more points and connections at each step.
  2. Different seeds can lead to different types of curves. Each seed can be developed using two choices for how to connect the points, leading to many possible variations.
  3. The process used to create these curves can also be reversed. By looking at a curve and breaking it down, you can see how it was made step by step.

Double Bubbles

Pershmail • 58 implied HN points • 14 Apr 23
🔬 Science Physics
  1. Double bubbles minimize surface area by using interesting film connections.
  2. For fencing in different areas with minimal material, the double bubble shape is ideal.
  3. The standard double bubble minimizes perimeter between two areas.

Sorry Folks There Aren't Any Space Aliens

Dilan’s Newsletter • 58 implied HN points • 08 Aug 23
🔬 Science Physics
  1. Science is not a religion, it relies on observations and experiments for truth
  2. The vastness of the universe and the limits of the speed of light make it highly unlikely for humans to ever come into contact with extraterrestrial intelligence
  3. Despite the fascination with space aliens, there is no scientific evidence supporting their existence or visits to Earth

Stubs (I)

Only Wonder Knows • 58 implied HN points • 21 Jul 23
🔬 Science Physics
  1. Stubs in transmission lines can cause reflections and affect signal quality.
  2. The impact of a stub can be minimized by understanding its notch frequencies.
  3. For frequencies below half of the notch frequency, the effect of a stub can be ignored.

Possibility is impossible

Mulled Thoughts • 58 implied HN points • 07 Sep 23
🔬 Science Physics
  1. Physics and mathematics are part of the structure of reality
  2. Logic and possibility are intertwined in how we understand the world
  3. Survival and belief systems influence how we perceive truth and reality

Unveiling the Mystery of Compressed Regions

Vesuvius Challenge • 20 implied HN points • 15 Aug 25
🔬 Science Physics
  1. They are using very small scans to understand why some layers of ancient papyrus look blurry. This helps them figure out how to get clearer images.
  2. The blurriness in the scans seems to come from the structure of the papyrus fibers, which scatter the X-rays. Identifying this can help improve future scanning methods.
  3. The team is developing tools to manage and analyze the huge amounts of data from their scans. This makes it easier to work with and improves their chances of reading the ancient texts.

Random chess position

Infinitely More • 23 implied HN points • 20 Jul 25
🔬 Science Physics
  1. Most random arrangements of chess pieces are not legal moves in a game. It's rare for pieces to be placed in a way that follows the rules of chess.
  2. When you randomly scatter 32 chess pieces on a board, there are many more illegal positions than legal ones. This shows how strict the game rules are.
  3. Understanding chess positions can help improve strategic thinking. It’s interesting to see how players use the rules to create valid game scenarios.

The Trouble with Fusion

Gordian Knot News • 183 implied HN points • 18 Feb 24
🔬 Science Physics
  1. Fusion faces difficult technical challenges like damage to the first wall, intense heat transfer, and high maintenance due to activation of materials.
  2. Achieving economic viability in fusion is a major hurdle, with immense parasitic loads and a fusion gain ratio that can be a significant challenge to achieve.
  3. Standard fusion processes like using deuterium and tritium result in energy losses due to the need for high quality energy input, which makes fusion less self-sustaining than fission.

The Sequence Chat: Can AI Solve The Riemann Hypothesis? Some Ideas About the Progress and Limitations of AI in Science

TheSequence • 70 implied HN points • 18 Dec 24
🔬 Science Physics
  1. AI has made impressive strides in scientific fields, helping tackle complex problems across various disciplines like chemistry and physics. This progress shows that AI can be a powerful tool in advancing our understanding of science.
  2. The Riemann Hypothesis is a famous unsolved math problem that could significantly enhance our knowledge of prime numbers. Its simplicity in concept and complexity in proof makes it a unique challenge for both humans and AI.
  3. While AI has potential in scientific research, there are limitations to what it can achieve, especially in tackling deeply complex problems like the Riemann Hypothesis. The unique nature of such challenges may be beyond AI's current capabilities.

Links for 2024-02-10

Axis of Ordinary • 19 implied HN points • 10 Feb 24
🔬 Science Physics
  1. AI advancements are progressing rapidly, with more agents leading to better performance in Language Models.
  2. Neuroscience is evolving with innovations like sensors enhancing sensation in prosthetic limbs and brain control enabled by neural networks.
  3. Physics research reveals insights such as gravity showcasing the strong force in the proton and implications of linearity in quantum mechanics.

Calibrating circuits

Only Wonder Knows • 19 implied HN points • 09 Feb 24
🔬 Science Physics
  1. Calibration of circuits can be a useful solution but it's important to know when it is necessary and when it's not.
  2. Understanding how components like sensors and resistors behave in different conditions is crucial before considering calibration.
  3. Before deciding to calibrate electronic components, a detailed technical and economic analysis should be conducted to ensure it is a suitable solution.

A review of "Don’t forget the boundary problem..."

Unstabler Ontology • 19 implied HN points • 08 Feb 24
🔬 Science Physics
  1. The article discusses the binding problem in consciousness theories, which is about combining different features into a unified awareness.
  2. Functionalism is challenged by the boundary problem, questioning why there are limits to our conscious experiences.
  3. Electromagnetic theories of consciousness are explored, considering the role of EM fields in demarcating conscious entities and potential solutions using field topology.

Sphericons

Pershmail • 39 implied HN points • 28 Apr 23
🔬 Science Physics
  1. The sphericon is a shape that wobbles when twisted, and it's made of two pieces resembling bicones.
  2. The sphericon has square dimensions and a 90 degree angle from one end extending down.
  3. Generalizations of the sphericon, called polycons, roll in a wobbly way and include shapes like hexacons, octacons, and decacons.

Identifying bottlenecks in networks

A Piece of the Pi: mathematics explained • 48 implied HN points • 03 Feb 25
🔬 Science Physics
  1. Bottlenecks in networks are crucial points that can slow down communication or movement. Identifying these points helps understand how the entire network functions.
  2. Networks can be made up of different regions that are linked by these bottlenecks. Recognizing connections between these regions is important for overall analysis.
  3. Knowing where the bottlenecks are can help improve the efficiency of networks, whether in transportation or social connections. This can lead to better planning and resource allocation.

Some Speculation on Future Computational Physics

Bzogramming • 61 implied HN points • 27 Nov 24
🕹 Technology Physics
  1. There are two main ways to tackle physics problems: symbolic methods that involve working with symbols directly, and numerical methods that use simpler calculations. Both have their pros and cons.
  2. Quantum mechanical problems can be very tough to solve and require immense computational power, often beyond what we currently have. Even with advancements, some problems could remain very hard for a long time.
  3. As computing develops, we should explore combining the best parts of symbolic and numerical physics. We might discover new tools and methods that make it easier to solve complex problems in the future.