Physics Forums - Science by Humans

New posts Post thread…
Guidance from scientists, mathematicians & engineers

An answer is easy. Understanding is the hard part. That's what we're for.

Live community · human-vetted
Est. 2001 · millions of discussions
New here? Sign up free

Mentor picks

Featured content

  • robphy
    General Discussion
    2026 Fields Medal
    • robphy
    • Replies: 1
    https://en.wikipedia.org/wiki/Fields_Medal Thu, July 23, 2026 https://www.youtube.com/@SimonsFoundation/streams Whoops... Fields Medal 2026: Leaked Names Reveal a Century of Math Solved at Once ICM website glitch...
    Replies: 1
  • W
    Programming and Computer Science
    Is A.I. more than the sum of its parts?
    • webplodder
    • Replies: 507
    Given that neuroscience cannot definitively explain where consciousness originates - whether as an emergent property of the brain or something transcendent - is it be possible for complex chatbots to develop...
    Replies: 507
  • Astronuc
    General Engineering
    Structural failure (buckling) of columns in NY City building, 235 E 42nd Street
    • Astronuc
    • Replies: 14
    Someone failed to do proper calculations/analysis. https://apnews.com/video/what-to-know-as-a-manhattan-high-rise-is-unstable-after-columns-buckle-forcing-evacuations-0dace9e1f11e4387abeb03738d773200 "Images and...
    Replies: 14

Active discussions

See all

Latest posts

New discussions

See all

Latest threads

Forums

Physics Discuss topics on physics, the scientific study of matter and motion. Find quality discussion on classical, quantum, high energy physics and more. Mainstream physics only.

Classical Physics

Heat radiation in vacuum
61.2K threads
Undergrad Heat radiation in vacuum

Quantum Physics

How valid is the indivisible interpretation of quantum mechanics?
26.8K threads
Graduate How valid is the indivisible interpretation of quantum mechanics?

Special and General Relativity

Why can coefficient "a" between spacetime intervals depend on velocity between systems?
22.4K threads
Undergrad Why can coefficient "a" between spacetime intervals depend on velocity between systems?

High Energy, Nuclear, Particle Physics

Duality between Feynman graphs
9.6K threads
Graduate Duality between Feynman graphs

Beyond the Standard Models

Is Gravi-GUT a candidate theory of everything?
7.8K threads
Undergrad Is Gravi-GUT a candidate theory of everything?

Atomic and Condensed Matter

Graphene and twistronics, Kavli Prize, 2026 - Rutgers, MIT, UT Austin
6.5K threads
Undergrad Graphene and twistronics, Kavli Prize, 2026 - Rutgers, MIT, UT Austin

Astronomy, Astrophysics, Cosmology

What if we could use a Black Hole as starship?
22.4K threads
High School What if we could use a Black Hole as starship?

Other Physics Topics

A rotating frame equation for the "carousel experiment"
8.7K threads
Graduate A rotating frame equation for the "carousel experiment"

Mathematics Math is the language of reality. Discuss calculus, statistics, topology and more!

General Math

Problem-Solving Strategy for Dynamics Problems
25.9K threads
Problem-Solving Strategy for Dynamics Problems

Calculus

Best way to numerically solve this system of equations?
27.4K threads
Undergrad Best way to numerically solve this system of equations?

Topology and Analysis

A differential geometry question from continuum mechanics
8.9K threads
Undergrad A differential geometry question from continuum mechanics

Linear and Abstract Algebra

Is the Cauchy stress tensor really a tensor?
13K threads
Undergrad Is the Cauchy stress tensor really a tensor?

Set Theory, Logic, Probability, Statistics

Please Explain (actually explain) The Monty Hall Problem
12.5K threads
Undergrad Please Explain (actually explain) The Monty Hall Problem

Engineering Engineering is science in action. Discuss mechanical, electrical, nuclear, design and more!

General Engineering

Structural failure (buckling) of columns in NY City building, 235 E 42nd Street
4.8K threads
Structural failure (buckling) of columns in NY City building, 235 E 42nd Street

Mechanical Engineering

Need a technical term for part of pressure hatch
15.3K threads
Need a technical term for part of pressure hatch

Electrical Engineering

Running older induction motors on VFDs
22.2K threads
Running older induction motors on VFDs

Aerospace Engineering

Space Stuff and Launch Info
2.3K threads
Space Stuff and Launch Info

Nuclear Engineering

Realta Fusion claims electrical generation from plasma!
2.5K threads
Realta Fusion claims electrical generation from plasma!

Materials and Chemical Engineering

Copper piping and cathodic protection?
3.8K threads
Copper piping and cathodic protection?

More Sciences and Computing Discuss a wide array of sciences like chemistry, biology, earth, social and more!

Chemistry

Gold hydride - what is the significance?
9.2K threads
Gold hydride - what is the significance?

Biology and Medical

Electrostatic scaling laws across the proteome — need expert feedback
12.6K threads
Electrostatic scaling laws across the proteome — need expert feedback

Earth Sciences

The Secrets of Prof. Verschure's Rosetta Stones
2.8K threads
The Secrets of Prof. Verschure's Rosetta Stones

Programming and Computer Science

Is A.I. more than the sum of its parts?
16.6K threads
Is A.I. more than the sum of its parts?

Homework Help Seek out and help with student's math and science homework help. Step by step help with coursework from high school to post grad. Please show your work and use the template. Submit your question in the correct forum.

Introductory Physics Homework Help

Two balls, dropped with a delay of ##\Delta t##, meet after rebound
139.2K threads
Two balls, dropped with a delay of ##\Delta t##, meet after rebound

Advanced Physics Homework Help

Landau, volume 1, chapter 1, problem 4: Lagrangian of a somewhat complex system
23.4K threads
Landau, volume 1, chapter 1, problem 4: Lagrangian of a somewhat complex system

Precalculus Mathematics Homework Help

Prove that ## 4\tan^{-1}\left[\dfrac{1}{5}\right]- \tan^{-1}\left[\dfrac{1}{239}\right]= \dfrac{π}{4}##
17.1K threads
Prove that ## 4\tan^{-1}\left[\dfrac{1}{5}\right]- \tan^{-1}\left[\dfrac{1}{239}\right]= \dfrac{π}{4}##

Calculus and Beyond Homework Help

Investigating the real roots of a cubic equation
65K threads
Investigating the real roots of a cubic equation

Biology and Chemistry Homework Help

Is bioelectricity considered more physics or biology?
10.2K threads
Biology Is bioelectricity considered more physics or biology?

Engineering and Comp Sci Homework Help

Calculating the Degrees of Freedom
18K threads
Engineering Calculating the Degrees of Freedom

Science Education and Careers Science education is the process of sharing scientific information with the goal of learning. Perspectives include, teachers, students and professionals. Find homework help, academic guidance and textbook reviews.

STEM Academic Advising

How best to learn? How to get 100%?
25.9K threads
How best to learn? How to get 100%?

STEM Career Guidance

Struggling with illness and existential despair
7.2K threads
Other Struggling with illness and existential despair

Science and Math Textbooks

Technical books that have been read cover to cover
6.4K threads
Other Technical books that have been read cover to cover

STEM Educators and Teaching

Forbes Daily Newsletter: 10% decline in student CompSci enrollment
969 threads
Forbes Daily Newsletter: 10% decline in student CompSci enrollment

The Lounge Take a break from science and discuss current affairs, jokes, relationships, sci-fi and more!

General Discussion

Collection of Lame Jokes
35.6K threads
Collection of Lame Jokes

Feedback and Announcements

PF Style 2026
4.2K threads
Announcement PF Style 2026