Physics Forums

greetings I've got a Chefman branded electric kettle (Chefman-Rj11-17) that went haywire - the kettle can be turned on normally, and the small LED on the handle displays water temperature, however, during the heating process, the temp displayed jumps to 212F rapidly, and the kettle turned off... Read more

Brilliant paper https://arxiv.org/abs/2202.04203v2 recently published in Nature Communications (open access) https://www.nature.com/articles/s41467-024-47170-2 resolves and demystifies the Frauchiger-Renner paradox associated with the Wigner friend problem. The resolution of the... Read more

sensor in slit must interact with photon, so isn't sensor reason why patterns on screen change? So what is exactly weird in this experiment? Can we somehow observe photon in slit but do not physically interact with him?

sensor in slit must interact with photon, so isn't sensor reason why patterns on screen change? So what is exactly weird in this experiment? Can we somehow observe photon in slit but do not physically interact with him?

I'm looking for a mathematical representation of a fundamental wave and it's harmonic modes. For example a wave of 590 nm what are its 'octaves'? Can the resulting formula be represented in polar coordinate 'vector' space?

I'm working on a story. It's retro-fantasy, Jules Vernian or Wellsian "First Men in the Moon" style, perhaps a space opera. In a nutshell: space travel in 1855. Some explorer/engineer stumbles upon an outcrop of handwavium, which, when properly stimulated, produces handwavium rays. The... Read more

I'm working on a story, and I want to ensure I have the basics straight. I'm not looking for any speculation, just facts. It is necessary to achieve escape velocity - not because we can't escape without achieving it - but because we need to achieve it before we run out of fuel , or... Read more

Hi, on the last page of this document https://faculty.uccs.edu/mwickert/wp-content/uploads/sites/58/2026/03/N5630_5.pdf the confidence interval diagram is to read. Somehow I feel difficult to understand it. 1. Why isn’t it related to n/N instead of n? 2. Do y+ and y- have absolute... Read more

Hi everyone! I'm a 10th-grade student (as of 2026) who is really interested in learning physics from scratch. I'm excited to learn more about how and why things work and talk with others who share the same interest.

Hi everyone, I wanted to start a discussion about one of the most fascinating questions in science: are we alone out there? Given that there are billions of Earth-like exoplanets in our galaxy alone, the odds seem high that life could exist elsewhere. However, we haven't found any definitive... Read more

In this cycle, if $$X$$ has efficiency greater than $$X^{'}$$, then we can show that, heat flows from cold reservoir to the hot reservoir. But this contradicts our everyday observation and we conclude that $$X$$ can not have greater efficiency than $$X^{'}$$. But what if... Read more

So I'm using python to compute the fourier transform of a black and white image and the images I've been getting have been different to what I expected. Input image: Output FFT: What I expected: Image from MinutePhysics's video Why are Stars... Read more

Lithium-ion batteries represent one of the greatest advances in energy storage. However, the transportation system is demanding more miles per charge. Tesla's 4680 cell has energy densities of 241 WH/Kg and 643 WH/L resulting in a 270 mile range. The Taiwanese company ProLogium has begun mass... Read more

Hi there! My name is Rodney. I am a 24 year old guy from the Netherlands. My whole life I have been fascinated by science, physics in particular but I have never had the opportunity to go to school and study it. As of right now, I'm planning to still chase the dream of becoming a scientist... Read more

Undergraduate degree in physics in 1974 Retired in 2000 from a career building computer systems, mostly for financial institutions Maintain interest in physics, although mostly without mathematics beyond simple order of magnitude calculations.

As in 2024 and 2025 , here is the 2026 thread. As indicated by various sources it is getting increasingly difficult to predict the laureates. So here I aggregate different sources and comment them until 2026 Nobel Week. You can also leave your prediction here. Here are the... Read more

Hi everyone, I'm a student who is really interested in cosmology. I was thinking about how both the Big Bang and black holes start with a singularity, and I ended up finding out about Schwarzschild Cosmology and Nikodem Popławski’s model (where our universe expands like a white hole inside a... Read more

Proposing a Line of Reasoning for a New Physical Theory Big Bang Theory – It begs the question: where did the singularity and the infinite energy come from? If we do not resolve the origin of spacetime and energy, we can never escape this infinite regress. Conclusion: this... Read more

N-Queens: Total Queen Count Patterns I've been studying N-Queens solutions and noticed something about the total number of queens across all solutions. For example, N=4 has 2 solutions. Total queens = 2 × 4 = 8. This is like preparing 2 separate 4×4 boards and placing one solution pattern on... Read more

Efficient supply chain management is important for businesses that need better control over procurement, inventory, warehousing, suppliers, and logistics. Modern supply chain management software helps Malaysian businesses connect these operations in one platform. Real-time inventory visibility... Read more