Physics Forums

I have grumped about people who focus way too much on the details of world-building, and how this can get cluttered in irrelevancies. So I am going to hold up an example of it done well. And for fun, I am going to pick on a kid's show: Sid and Marty Krofft's 1974 Land of the Lost . Not... Read more

Dear colleagues and theoretical physicists,I would like to introduce a localized dynamic precision numerical and functional analysis framework designed to evaluate continuous field equations without encountering standard machine-level rounding artifacts: so-hmns.To clarify its academic... Read more

The standard physical chemistry and thermodynamics literature states that water expands upon freezing due to the crystalline structure of ice (hexagonal ice I_h), which occupies approximately 9% more volume than liquid water at the same mass. This expansion is treated as an intrinsic property of... Read more

The standard physical chemistry and thermodynamics literature states that water expands upon freezing due to the crystalline structure of ice (hexagonal ice I_h), which occupies approximately 9% more volume than liquid water at the same mass. This expansion is treated as an intrinsic property of... Read more

Hello, I am an amateur researcher who has posted a preprint of a toy model. Have fun with it!

I apologize if I'm posting in the wrong part of the forum, I'm new. I have started find cosmology interesting. I have started to learn about black holes but I don't understand something that might obvious and I'm not getting it. Why is/was there an assumption that things that enter a blackhole... Read more

I plan a hard SF story and a scene where a fleet intends to capture an asteroid mine. AI ruled out, that society completely get rid of anything more advanced than a calculator (and became a tyranny). They still have advanced technology developed before the AI rebellion. Destroy space colonies... Read more

School starts soon, and I know students are looking to get their textbooks at bargain prices Inspired by this thread I thought that I could share some of my findings of 100% legally free textbooks and lecture notes in mathematics and mathematical physics (mostly focused on... Read more

... I'm sure anyone with half a brain already made the connection and I'm not ashamed of anything. After all, if I can keep a website running and keep scary people away from getting caught in addiction worse than mine, it goes to show I still have something to share: It's going up on my... Read more

... I'm sure anyone with half a brain already made the connection and I'm not ashamed of anything. After all, if I can keep a website running and keep scary people away from getting caught in addiction worse than mine, it goes to show I still have something to share: It's going up on my... Read more

The material I am hoping to discuss and find answers to is based around the future-proofing of ocean voyages using both solar and hydrogen as power sources. I have a concept I will be laying out on paper over the next 12 months of a Trimaran with two electric motors which, if I can solve the one... Read more

Hi everyone, I'm an undergrad about to pursue a PhD, and I'm interested in quantum computing, QFT, quantum gravity, many-body physics, and philosophy.

Motivation Standard derivation of the LSZ reduction formula often rely on the assumption of an "in" or "out" free-field limit from the outset. While elegant, this approach can obscure the connection between the actual dynamics of the interacting field [itex]\varphi(x)[/itex] and the... Read more

I apologize if I'm posting in the wrong part of the forum, I'm new. I have started find cosmology interesting. I have started to learn about black holes but I don't understand something that might obvious and I'm not getting it. Why is/was there an assumption that things that enter a blackhole... Read more

the heading make the project look simple but it is not but it is not too hard. before heading into the problem i am facing lemme tell you the rough idea. i have some sensors which i am going to connect with whicarduino board and later get data from those sensors and use a model to recogonize the... Read more

The numbers behind phishing attacks are alarming. From credential theft to ransomware deployment, phishing continues to be the entry point for many major security incidents. The statistics covered in this article provide valuable insight into why phishing awareness remains a top... Read more

The statement is: Find the currents of the circuit after the switch S is closed. I solved it by EDO (ordinary differential equations) and then I tried to solve it by Laplace and they gave different answers.

I would like to create a 3D printable model of the earth's orbit around the sun and slice it into the months of the year. So basically a calendar. Except I wanted to add heights for relative local weather conditions for a given year. Does anyone know the best way to draw our orbit?

Hey everyone, I'm Bill and thanks in advance for any advice, criticism, praise, etc. I have this theory and I think it's the one. The manuscript is too large to attach in it's entirety, but if anyone's interested, I can send you a copy. I posted the abstract here: Physics 2.0 is a... Read more