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Participate in expert physics discussion. Discussion on the nature and properties of matter and energy. This area is for topics that don't fit the other categories. Mainstream physics only.

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Undergrad Could Apophis, the Giant Asteroid, Be Diverted from Hitting Earth?

Dec 7, 2005 · Replies 2 · Dec 7, 2005

Replies: 2

Views: 2K

Graduate Earth Flying Away from Sun: What Does the Math Say?

Dec 1, 2005 · Replies 19 · Dec 7, 2005

Replies: 19

Views: 4K

High School Does Wood Create Noise When Vibrated?

Dec 5, 2005 · Replies 7 · Dec 6, 2005

Replies: 7

Views: 8K

Graduate Paradox of Motion: Physics & Math Explained

Sep 26, 2005 · Replies 37 · Dec 5, 2005

2

Replies: 37

Views: 5K

High School What are vvvdat tables and how can they help with introductory physics homework?

Apr 17, 2005 · Replies 35 · Dec 5, 2005

2

Replies: 35

Views: 10K

Experience a Fascinating Life Webcast on Dec. 1st with Einstein at PhysicsWeb

Nov 30, 2005 · Replies 5 · Dec 3, 2005

Replies: 5

Views: 2K

Undergrad Math for 'Curtain Shooter' Games

Dec 3, 2005 · Replies 2 · Dec 3, 2005

Replies: 2

Views: 4K

Are Electrical Engineers Secretly Physicists?

Dec 1, 2005 · Replies 28 · Dec 3, 2005

Replies: 28

Views: 7K

Does Studying Advanced Physics Make Your Brain Feel Fried?

Dec 2, 2005 · Replies 3 · Dec 2, 2005

Replies: 3

Views: 2K

Undergrad The Great Beer Debate: Is Drinking Beer Good for Weight Loss?

Dec 2, 2005 · Replies 3 · Dec 2, 2005

Replies: 3

Views: 4K

Graduate Is Einstein's Genius Overrated in the World of Physics?

Nov 29, 2005 · Replies 12 · Dec 1, 2005

Replies: 12

Views: 3K

High School Understanding Resonance & Tuning Forks

Nov 29, 2005 · Replies 3 · Nov 30, 2005

Replies: 3

Views: 6K

Graduate Are World Counts the Key to Understanding the Born Rule?

Nov 24, 2005 · Replies 35 · Nov 29, 2005

2

Replies: 35

Views: 6K

Graduate G:"Solving Orbital Geometry: Achieve Escape Velocity & Orbit Free Return

Nov 11, 2005 · Replies 12 · Nov 29, 2005

Replies: 12

Views: 4K

Help Martin Black Understand T2+S3=T8

Nov 28, 2005 · Replies 8 · Nov 28, 2005

Replies: 8

Views: 2K

High School Can a Car Run Solely on a Battery and Alternator?

Nov 27, 2005 · Replies 3 · Nov 27, 2005

Replies: 3

Views: 3K

Can we stand on the surface of the Dead Sea?

Nov 21, 2005 · Replies 6 · Nov 27, 2005

Replies: 6

Views: 10K

Famous physicists related to famous entertainers

Nov 24, 2005 · Replies 19 · Nov 26, 2005

Replies: 19

Views: 9K

High School Understanding the "Phase" of Waves

Nov 23, 2005 · Replies 2 · Nov 25, 2005

Replies: 2

Views: 3K

High School Something I noticed about eye droppers

Nov 25, 2005 · Replies 13 · Nov 25, 2005

Replies: 13

Views: 3K

Fog Fluid - Cherry Scented Fog Making Liquid

Nov 18, 2005 · Replies 2 · Nov 25, 2005

Replies: 2

Views: 2K

High School How do you shoot a man out of a cannon?

Nov 23, 2005 · Replies 11 · Nov 25, 2005

Replies: 11

Views: 18K

Can You Speed Up Ice Tray Freezing?

Nov 19, 2005 · Replies 34 · Nov 24, 2005

2

Replies: 34

Views: 29K

Graduate Does Randomness Intrinsically Exist in Nature?

Nov 17, 2005 · Replies 8 · Nov 24, 2005

Replies: 8

Views: 4K

Undergrad How Does the Conservation of Energy Apply to the Existence of Space?

Nov 18, 2005 · Replies 5 · Nov 22, 2005

Replies: 5

Views: 6K

Graduate Does my antigravity engine convert gravity into spin?

Nov 22, 2005 · Replies 2 · Nov 22, 2005

Replies: 2

Views: 4K

Graduate Revisiting the Definition of Speed: Is Distance/Time Arbitrary?

Nov 20, 2004 · Replies 63 · Nov 21, 2005

3

Replies: 63

Views: 16K

Graduate How do we know values for a true vacuum?

Nov 18, 2005 · Replies 5 · Nov 20, 2005

Replies: 5

Views: 3K

Undergrad Why Don't We Have Anti-Gravity Devices Yet?

Nov 17, 2005 · Replies 49 · Nov 19, 2005

2

Replies: 49

Views: 10K

Want to Write a Bestselling Book on Physics and Electronics? Share Your Tips!

Nov 23, 2004 · Replies 4 · Nov 18, 2005

Replies: 4

Views: 7K

Graduate What is the Expansion of the Universe and What Material is it Expanding Into?

Nov 17, 2005 · Replies 8 · Nov 18, 2005

Replies: 8

Views: 3K

Undergrad Gravity on the surface of a Hollow Earth

Nov 9, 2005 · Replies 14 · Nov 15, 2005

Replies: 14

Views: 7K

Graduate Gravitational Constant: Deriving Newton's Law with a TOE

Nov 1, 2005 · Replies 12 · Nov 13, 2005

Replies: 12

Views: 3K

Can Cows Really Not Be Tipped?

Nov 13, 2005 · Replies 13 · Nov 13, 2005

Replies: 13

Views: 3K

High School The Mystery of Bicycle Wheel Sizes: Stability or Ease of Use?

Nov 12, 2005 · Replies 1 · Nov 12, 2005

Replies: 1

Views: 3K

High School Integral in Physics - Learn How to Solve Problems

Nov 9, 2005 · Replies 4 · Nov 11, 2005

Replies: 4

Views: 16K

Michio Kaku's Hyperspace: Dying Galaxy & "Let There Be Light

Nov 10, 2005 · Replies 3 · Nov 11, 2005

Replies: 3

Views: 3K

Graduate Power source that turns physics on its head

Nov 4, 2005 · Replies 25 · Nov 10, 2005

Replies: 25

Views: 13K

Undergrad British Physics Olympiad - Intellectual Masochism?

Nov 4, 2005 · Replies 15 · Nov 9, 2005

Replies: 15

Views: 5K

Man pulls saltshaker through glass

Nov 8, 2005 · Replies 4 · Nov 9, 2005

Replies: 4

Views: 4K

Undergrad Can Earth Hold Invisible Objects?

Oct 31, 2005 · Replies 18 · Nov 7, 2005

Replies: 18

Views: 3K

Einstein & UFOs: What Would He Say?

Oct 30, 2005 · Replies 23 · Nov 6, 2005

Replies: 23

Views: 5K

High School High Frequencies in Computer CPUs

Nov 6, 2005 · Replies 21 · Nov 6, 2005

Replies: 21

Views: 4K

Spongebob Farting Underwater - What Happens Next?

Nov 5, 2005 · Replies 9 · Nov 6, 2005

Replies: 9

Views: 2K

Graduate Can We Ever Have a Theory of Everything?

Aug 30, 2005 · Replies 16 · Nov 5, 2005

Replies: 16

Views: 3K

Graduate Why is there a growing trend of ignorance towards Special Relativity?

Nov 3, 2005 · Replies 37 · Nov 5, 2005

2

Replies: 37

Views: 5K

News Is ABC's Nuclear Scandal at Penn State Overblown?

Oct 13, 2005 · Replies 8 · Nov 1, 2005

Replies: 8

Views: 3K

Undergrad Why is integral notation sometimes written in a strange way?

Nov 1, 2005 · Replies 1 · Nov 1, 2005

Replies: 1

Views: 2K

Undergrad Learn Computational Physics: Best Language & Packages for Computer Simulations

Oct 28, 2005 · Replies 14 · Nov 1, 2005

Replies: 14

Views: 5K

Undergrad What Causes Sonoluminescence and Acoustic Levitation?

Oct 26, 2005 · Replies 6 · Oct 31, 2005

Replies: 6

Views: 4K

Graduate Advanced Physics Tutorials: A Directory

Oct 18, 2005 · Replies 5 · Oct 28, 2005

Replies: 5

Views: 29K

Physics of Combat: The Science of Fighting on SKY 1

Oct 27, 2005 · Replies 4 · Oct 27, 2005

Replies: 4

Views: 7K

High School Compasses with Quickly Rotating Needles: Do They Exist?

Oct 18, 2005 · Replies 5 · Oct 27, 2005

Replies: 5

Views: 4K

Richard Feynman, 1965 Physics Nobel Prize Winner

Oct 25, 2005 · Replies 7 · Oct 26, 2005

Replies: 7

Views: 6K

High School Why is the Sky Blue? Reasons Explained

Oct 24, 2005 · Replies 15 · Oct 25, 2005

Replies: 15

Views: 5K

Graduate Sources of non-linearity in detector

Oct 20, 2005 · Replies 3 · Oct 24, 2005

Replies: 3

Views: 3K

What Songs Mention Isaac Newton?

Oct 22, 2005 · Replies 16 · Oct 23, 2005

Replies: 16

Views: 14K

End day from national geographic

Oct 23, 2005 · Replies 1 · Oct 23, 2005

Replies: 1

Views: 2K

High School Help Solve Physics Problems - Physics Forums

Oct 21, 2005 · Replies 9 · Oct 22, 2005

Replies: 9

Views: 2K

Einstein's Big Idea: Oct 11 on PBS

Oct 7, 2005 · Replies 11 · Oct 21, 2005

Replies: 11

Views: 3K

Undergrad Can Home Computers Run Hurricane Models?

Oct 20, 2005 · Replies 4 · Oct 21, 2005

Replies: 4

Views: 3K

High School Introductory Physics Tutorials: A Directory

Oct 18, 2005 · Replies 3 · Oct 20, 2005

Replies: 3

Views: 63K

High School How to apply first and second laws of thermodynamics?

Oct 18, 2005 · Replies 24 · Oct 19, 2005

Replies: 24

Views: 3K

Undergrad Dialysis: how does this relate to physics?

Oct 19, 2005 · Replies 3 · Oct 19, 2005

Replies: 3

Views: 6K

High School Physics Resource: AJP Accessible to Undergrads & HS

Oct 19, 2005 · Replies 2 · Oct 19, 2005

Replies: 2

Views: 5K

Graduate What is Dr. Luther Ebwood's Cosignial Frequency Theory?

Oct 15, 2005 · Replies 2 · Oct 18, 2005

Replies: 2

Views: 2K

Interesting Facts about Richard Feynmann

Oct 13, 2005 · Replies 19 · Oct 17, 2005

Replies: 19

Views: 9K

High School Why Does Physics Use Greek Letters?

Oct 17, 2005 · Replies 4 · Oct 17, 2005

Replies: 4

Views: 3K

Graduate Understanding the Accuracy and Precision of the Definition of Second

Oct 9, 2005 · Replies 4 · Oct 16, 2005

Replies: 4

Views: 12K

High School Should Scientists Bet on the Impossibility of Perpetual Motion?

Oct 14, 2005 · Replies 2 · Oct 15, 2005

Replies: 2

Views: 3K

Undergrad Understanding Lorenzo's Nonlinear Effect

Oct 14, 2005 · Replies 4 · Oct 14, 2005

Replies: 4

Views: 3K

Undergrad Applications of computational physics?

Oct 13, 2005 · Replies 5 · Oct 14, 2005

Replies: 5

Views: 10K

High School Negative vs. Positive Signs: An Easy Guide

Oct 13, 2005 · Replies 1 · Oct 13, 2005

Replies: 1

Views: 2K

High School The Effects of Brown Noise on Sleep Quality

Oct 13, 2005 · Replies 7 · Oct 13, 2005

Replies: 7

Views: 9K

Undergrad Researching Virtual Energy: Purpose of Vacuum Tubes

Oct 13, 2005 · Replies 2 · Oct 13, 2005

Replies: 2

Views: 2K

Trouble Understanding Idea: Searching for Resources

Oct 13, 2005 · Replies 2 · Oct 13, 2005

Replies: 2

Views: 2K

Undergrad Is Perpetual Motion Real? Lessons from I Robot and the Laws of Thermodynamics

Oct 12, 2005 · Replies 8 · Oct 13, 2005

Replies: 8

Views: 2K

Michio Kaku & Cassini: Has His View Changed?

Jul 30, 2005 · Replies 12 · Oct 12, 2005

Replies: 12

Views: 5K

High School Waves: Can Speed & Frequency Be Changed?

Oct 12, 2005 · Replies 1 · Oct 12, 2005

Replies: 1

Views: 14K

Why is this website a great resource for learning about physics and space?

Oct 9, 2005 · Replies 42 · Oct 12, 2005

2

Replies: 42

Views: 5K

Graduate Are Atoms Truly Devoid of Random Details?

Oct 9, 2005 · Replies 9 · Oct 10, 2005

Replies: 9

Views: 3K

Physics' challenges for the 21st century

Oct 7, 2005 · Replies 5 · Oct 10, 2005

Replies: 5

Views: 13K

Graduate Posts Now Demonstrating Relativistic Effects

Oct 7, 2005 · Replies 21 · Oct 7, 2005

Replies: 21

Views: 3K

Are there math forums for advanced teen physicists?

Oct 6, 2005 · Replies 10 · Oct 6, 2005

Replies: 10

Views: 3K

Graduate Is this error analysis equation correct for a simple geometric mean?

Oct 4, 2005 · Replies 8 · Oct 6, 2005

Replies: 8

Views: 3K

High School What Is the Cornu Spiral and How Is It Used?

Oct 3, 2005 · Replies 4 · Oct 4, 2005

Replies: 4

Views: 5K

Undergrad Is Diamond Colloid the Most Energy Dense Chemical Fuel Available?

Sep 27, 2005 · Replies 6 · Oct 3, 2005

Replies: 6

Views: 4K

What if light could only travel at 50km/hr?

Oct 3, 2005 · Replies 11 · Oct 3, 2005

Replies: 11

Views: 2K

Liquid Nitrogen vs. Liquid Helium

Oct 3, 2005 · Replies 2 · Oct 3, 2005

Replies: 2

Views: 13K

High School How many pounds are in a gallon?

Oct 1, 2005 · Replies 7 · Oct 2, 2005

Replies: 7

Views: 5K

Graduate How Fast Can Space Itself Travel?

Sep 15, 2005 · Replies 10 · Oct 2, 2005

Replies: 10

Views: 3K

Why is PF Promoting 'What the Bleep' Merchandise?

Sep 29, 2005 · Replies 21 · Sep 30, 2005

Replies: 21

Views: 4K

Graduate Could Higher Dimensions Reveal New Wave Phenomena?

Sep 26, 2005 · Replies 3 · Sep 30, 2005

Replies: 3

Views: 2K

Graduate Explore SMOT - Free Energy Possibilities & Unanswered Questions

Sep 30, 2005 · Replies 2 · Sep 30, 2005

Replies: 2

Views: 2K

Can anyone exactly explain 'Restituition'?

Sep 30, 2005 · Replies 1 · Sep 30, 2005

Replies: 1

Views: 2K

High School Understanding Energy: Alternative Working Conditions

Sep 25, 2005 · Replies 9 · Sep 29, 2005

Replies: 9

Views: 2K

Start Your Own Physics Blog - Read Dimi's Story

Sep 25, 2005 · Replies 12 · Sep 29, 2005

Replies: 12

Views: 3K

Graduate Why Are We Living In A Prison Of Light ?

Aug 16, 2005 · Replies 15 · Sep 27, 2005

Replies: 15

Views: 3K

High School Could Resonance Have Caused a Glass to Break in a Cabinet?

Sep 26, 2005 · Replies 8 · Sep 27, 2005

Replies: 8

Views: 8K

Are You Familiar with the Guidelines for Posting on Physics Forums?

Sep 27, 2005 · Replies 4 · Sep 27, 2005

Replies: 4

Views: 5K

Physics

Physics is the scientific study of the fundamental principles governing the behavior of matter and energy in the universe. It explores the nature of space, time, motion, forces, and the interactions between particles and fields.

Physicists seek to formulate laws and theories that describe the fundamental forces shaping the cosmos, from the microscopic world of subatomic particles to the vastness of galaxies. Divided into classical and modern physics, the discipline encompasses mechanics, electromagnetism, thermodynamics, quantum mechanics, and relativity.

Physics not only provides a framework for understanding the physical world but also drives technological innovations, shaping our comprehension of reality and inspiring advancements in various scientific and technological domains.

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