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How could you build a simple inverse greenhouse box?

4 minutes ago

Replies: 2

Views: 102

Random Photos

5 minutes ago

61

Replies: 2K

Views: 89K

B Q: more frames or longer exposures?

6 minutes ago

Replies: 13

Views: 137

Wordle Lovers - Play the NYT Daily Game

7 minutes ago

142

Replies: 5K

Views: 96K

Sprocket torque question

9 minutes ago

Replies: 7

Views: 72

Problem with dimensionless quantities in an equation requiring M^2 (Super Hamiltonian Formulation for Geodesic Motion)

10 minutes ago

Replies: 13

Views: 501

Measuring g forces when stopping a car

19 minutes ago

Replies: 15

Views: 158

I What is the name of this geometry theorem

23 minutes ago

Replies: 2

Views: 42

B Proving area formula for a rectangle for all positive real numbers.

32 minutes ago

Replies: 2

Views: 14

I How to show these random variables are independent?

50 minutes ago

Replies: 1

Views: 16

Chromium 2+ ion uses only unfilled d-orbitals to form 6 dative bonds?

59 minutes ago

Replies: 0

Views: 4

M6.8 and M6.3 east of Mindanao, Philippines

Today, 7:04 AM

Replies: 0

Views: 2

I Can there be quantum fluctuations without spacetime?

Today, 6:45 AM

Replies: 2

Views: 29

Building homemade machine since 2000

Today, 6:41 AM

Replies: 0

Views: 8

I How to calculate the mass of gas in a tank?

Today, 6:19 AM

Replies: 22

Views: 206

Collection of Lame Jokes

Today, 6:11 AM

566

Replies: 20K

Views: 2M

Correct phrase involving optical rotation of venom

Today, 5:23 AM

Replies: 6

Views: 90

Different forms of fluid energy conservation equations

Today, 5:15 AM

Replies: 2

Views: 31

Hi I'm new here!

Today, 5:12 AM

Replies: 0

Views: 8

Physics major wins men's 50m freestyle at the Paris Olympics

Today, 4:48 AM

Replies: 0

Views: 14

Admissions Will poor grades later in my degree affect my chances of doing a PhD?

Today, 4:32 AM

Replies: 1

Views: 48

I Will all objects in the Universe transform into black holes through quantum tunneling?

Today, 3:40 AM

Replies: 4

Views: 95

Is There an Economics Forum Similar to PhysicsForums for In-depth Learning?

Today, 2:44 AM

Replies: 2

Views: 1K

Searching for knowledge about probability and statistics

Today, 2:33 AM

Replies: 2

Views: 24

Random Thoughts 7

Today, 1:38 AM

27

Replies: 931

Views: 19K

Magnetic Field of an infinite current-carrying wire at a point

Today, 1:06 AM

Replies: 5

Views: 54

What were you doing at 16?

Today, 12:45 AM

2

Replies: 50

Views: 2K

How does unit force affect acceleration?

Today, 12:39 AM

Replies: 1

Views: 27

JavaScript Particle.js: Exploring Particle Physics with Web Technologies

Today, 12:04 AM

Replies: 12

Views: 390

B Cooling effect of evaporation occurs even if the surroundings are colder?

Yesterday, 11:41 PM

Replies: 9

Views: 79

B Matter/Anti-Matter in a Vacuum

Yesterday, 11:07 PM

Replies: 7

Views: 76

To what extent does this system behave as a pendulum?

Yesterday, 10:56 PM

Replies: 1

Views: 36

I Magnetic Resonance physics question: RF pulse role and 'in-phase'

Yesterday, 10:34 PM

Replies: 2

Views: 37

Fluid mechanics: Euler's equation derivation

Yesterday, 10:22 PM

Replies: 26

Views: 618

I Comet A117uUD Goes Interstellar after Encountering Saturn in 2022

Yesterday, 9:41 PM

Replies: 0

Views: 24

What are the approximations used in these equations of motion for two coupled oscillators?

Yesterday, 8:18 PM

Replies: 5

Views: 51

M 2.9 Earthquake, Lake Michigan, 39 km ESE of Sturgeon Bay, Wisconsin

Yesterday, 7:22 PM

Replies: 2

Views: 35

Contradictory statements made by two different professors about IQ scores

Yesterday, 7:16 PM

Replies: 24

Views: 411

Collection of Science Jokes P2

Yesterday, 7:15 PM

101

Replies: 4K

Views: 366K

New and Interesting Publications Relevant to the Origin of Life

Yesterday, 7:10 PM

Replies: 3

Views: 449

B Can sound travel through clay?

Yesterday, 7:07 PM

Replies: 16

Views: 191

I Are there asymptotic QFT/QED states in a constant magnetic field?

Yesterday, 6:43 PM

Replies: 5

Views: 2K

Request resources to understand Picard–Lindelöf for ODEs

Yesterday, 6:39 PM

Replies: 1

Views: 63

Zeff =Z-S and effective nuclear charge of transition metals

Yesterday, 6:33 PM

Replies: 0

Views: 27

Calculus Book that focuses on stability of equilibrium solutions to ODEs

Yesterday, 6:28 PM

Replies: 0

Views: 32

How would gravity on another world influence human lifespan?

Yesterday, 5:41 PM

Replies: 32

Views: 270

I Series Expansion of the Infinitesimal Spacetime Interval

Yesterday, 4:58 PM

Replies: 20

Views: 776

I Does a rotating accelerometer moving linearly measure linear velocity?

Yesterday, 4:25 PM

2

Replies: 42

Views: 451

Probability that all runners finish within (9.8s to 9.9s)

Yesterday, 3:49 PM

Replies: 4

Views: 61

I The proportion of kinetic energy of a rotating rigid body?

Yesterday, 3:40 PM

Replies: 7

Views: 117

I Manifold hypersurface foliation and Frobenius theorem

Yesterday, 3:36 PM

2

Replies: 67

Views: 1K

Pro Engine Builder

Yesterday, 3:19 PM

Replies: 4

Views: 62

Why does this method of solving a system of 2nd order differential equations not work?

Yesterday, 2:18 PM

Replies: 13

Views: 110

Sustainable building with earth, corrugated galvanised iron and rebars

Yesterday, 1:34 PM

Replies: 31

Views: 379

Two cards are drawn from a deck without replacement

Yesterday, 12:19 PM

Replies: 6

Views: 108

Music Cover songs versus the original track, which ones are better?

Yesterday, 10:31 AM

39

Replies: 1K

Views: 39K

I Statics: When the reactions depend on the displacements

Yesterday, 9:25 AM

Replies: 29

Views: 1K

PBS Video Comment: “What If Physics IS NOT Describing Reality”

Yesterday, 9:08 AM

Replies: 3

Views: 399

B Energy production that converts Hydrogen to Iron?

Yesterday, 9:04 AM

2

Replies: 40

Views: 2K

Construction Building open boxes with wood

Yesterday, 9:03 AM

2

Replies: 42

Views: 887

I Proof for interpolating polynomial and error approximation

Yesterday, 8:34 AM

Replies: 6

Views: 97

I Can someone explain the principle of magnetic levitation in this YouTube video?

Yesterday, 8:23 AM

Replies: 2

Views: 68

How do YBCO superconductors react with hydrochloric acid?

Yesterday, 8:20 AM

Replies: 6

Views: 1K

Poll

Writing: Input Wanted Designing the Nuclear-Fusion Reactor for my Generation Ship

Yesterday, 7:38 AM

Replies: 12

Views: 192

Mechanisms Involved When Charging a Battery

Yesterday, 7:35 AM

Replies: 6

Views: 118

News 2024 Summer Olympic Games Discussion

Yesterday, 7:33 AM

2

Replies: 44

Views: 520

A Can gravitational energy be localized in the case of plane waves?

Yesterday, 6:48 AM

Replies: 2

Views: 120

Thinking about Encouragement for Youth

Yesterday, 6:35 AM

Replies: 6

Views: 102

Stresses along different planes in polycrystalline materials

Yesterday, 5:23 AM

Replies: 2

Views: 87

Interpreting electrochemical impedance spectroscopy (EIS) circuits

Yesterday, 4:24 AM

Replies: 5

Views: 85

Where can I find chemistry experiments that are accurately described with the Dirac equation?

Yesterday, 4:19 AM

Replies: 11

Views: 305

B Gluons turning into quarks and antiquarks

Yesterday, 4:15 AM

Replies: 8

Views: 106

A The original definition of Category

Yesterday, 3:31 AM

Replies: 8

Views: 83

Request Lecture notes for math similar to that mathonline.wikidot.com

Yesterday, 3:10 AM

Replies: 2

Views: 82

I The components of Dirac Equation -- Bosonic Lagrangian?

Yesterday, 2:22 AM

Replies: 1

Views: 64

Valence shell of transition metals definition is what?

Yesterday, 2:19 AM

Replies: 1

Views: 52

Sticky

Space Stuff and Launch Info

Yesterday, 1:58 AM

39

Replies: 1K

Views: 123K

Can pressure differential close lateral window?

Yesterday, 12:05 AM

Replies: 8

Views: 93

Creating a minimal Windows 11 Bootable USB stick for my ROG Computer

Thursday, 11:19 PM

Replies: 2

Views: 77

I Understanding the Equivalence Principle

Thursday, 10:00 PM

Replies: 10

Views: 187

A New Adler book on GR: Why do these coefficients go to zero?

Thursday, 9:17 PM

Replies: 2

Views: 92

Windows update failure -- Help please

Thursday, 8:42 PM

Replies: 7

Views: 73

Physics Graduating with 2:2 in Physics. What can I do? (IRELAND)

Thursday, 8:36 PM

Replies: 7

Views: 145

Baltimore's Francis Scott Key Bridge Collapses after Ship Strike

Thursday, 8:27 PM

9

Replies: 289

Views: 9K

Are atomic conductivity and standard reduction potential correlated?

Thursday, 8:21 PM

Replies: 5

Views: 95

B What is the Absolute Value of the Normal force on a block on this wedge?

Thursday, 7:50 PM

Replies: 3

Views: 93

Announcement Physics Forums Server Migration 7/31/2024

Thursday, 4:52 PM

2

Replies: 47

Views: 1K

Bach, Bach, and more Bach please

Thursday, 4:40 PM

4

Replies: 117

Views: 6K

I What Makes the Windiest Exoplanets? – Exploring Atmospheric Dynamics

Thursday, 4:22 PM

Replies: 8

Views: 136

Time Patrol from the year 2500 interacting with many universes

Thursday, 3:36 PM

Replies: 1

Views: 75

Sticky

Our Beautiful Universe - Photos and Videos

Thursday, 3:30 PM

64

Replies: 2K

Views: 215K

Online Resources request for chemistry quizzes for practice

Thursday, 3:24 PM

Replies: 1

Views: 68

The Secrets of Prof. Verschure's Rosetta Stones

Thursday, 2:43 PM

2

Replies: 62

Views: 8K

Force on a block placed on a rotating disc, calculated in different reference frames

Thursday, 2:16 PM

Replies: 25

Views: 289

Reaction Rate experiment: Potassium Permanganate and Hydrogen Peroxide

Thursday, 1:44 PM

Replies: 2

Views: 313

Unit normed linear functional on a space of sequences

Thursday, 1:17 PM

Replies: 13

Views: 174

Understanding solution to equations of motion of n coupled oscillators

Thursday, 12:38 PM

Replies: 4

Views: 105

Exploring Quantum physics!

Thursday, 12:24 PM

Replies: 2

Views: 44

B Pascal's Triangle Question

Thursday, 11:54 AM

Replies: 11

Views: 166

Why do the d, f orbitals of transition metals have less reactivity?

Thursday, 11:12 AM

Replies: 1

Views: 259

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