Other Physics Topics Forum

Post thread
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.
A Apliying PCA to two correlated stochastic processes
  • · Replies 2 ·
Replies
2
Views
1K
I Looking for a cheap digital scale with accuracy <1 g
  • · Replies 5 ·
Replies
5
Views
2K
I Finding the max angle of a longboard deck before the wheels slip
  • · Replies 8 ·
Replies
8
Views
2K
Why are the last two digits of the mass of an electron in parentheses?
  • · Replies 4 ·
Replies
4
Views
1K
B 2 large objects of equal mass, Will they move each other?
  • · Replies 4 ·
Replies
4
Views
2K
B How does the ear distinguish multiple different pitches?
  • · Replies 18 ·
Replies
18
Views
3K
I Could a Smoke Detector Serve as a Sail for Spacecraft Propulsion?
  • · Replies 2 ·
Replies
2
Views
1K
A Calculating decay rates for modes of a circular membrane
  • · Replies 1 ·
Replies
1
Views
2K
B Can ultracapacitors be used to split CO2 into carbon and oxygen?
  • · Replies 3 ·
Replies
3
Views
1K
I Understanding Delta V = Ed: Validity and Implications for Electric Potential
  • · Replies 2 ·
Replies
2
Views
2K
A Little help interpreting spectral data from an article
  • · Replies 5 ·
Replies
5
Views
2K
I The Role of Doping and Electric Fields in P-N Junction Formation?
  • · Replies 30 ·
2
Replies
30
Views
7K
B Do multiverses follow the same laws of physics?
  • · Replies 1 ·
Replies
1
Views
2K
I Designing Rehabilitation Equipment for an Upper Limb (arm)
  • · Replies 2 ·
Replies
2
Views
2K
A Damped Harmonic Oscillator - Gravity not constant.
  • · Replies 9 ·
Replies
9
Views
3K
I Can Diagrams be Used as Circuits in Explaining Sensor Operations?
  • · Replies 11 ·
Replies
11
Views
2K
I Transfer of information via a rigid body?
  • · Replies 5 ·
Replies
5
Views
2K
I Can someone explain this phenomena?
  • · Replies 4 ·
Replies
4
Views
2K
B Expert Tips for Solving Physics Problems | Ace Your Finals in 6 Days!
  • · Replies 11 ·
Replies
11
Views
2K
A Free bar fundamental vibration relationship length to width
  • · Replies 1 ·
Replies
1
Views
2K
I "Undo" Second Derivative With Square Root?
  • · Replies 8 ·
Replies
8
Views
2K
I Predicting the decay time of a resonant bandpass filter
  • · Replies 1 ·
Replies
1
Views
2K
B What we mean in physics definition (quantity or property)?
  • · Replies 1 ·
Replies
1
Views
2K
I What Radial Forces Are Created When Pulling a Wrapped String?
  • · Replies 1 ·
Replies
1
Views
1K
I Liquid metal slip/rotary contact
  • · Replies 16 ·
Replies
16
Views
5K
I Poynting's theorem in Griffith's
  • · Replies 6 ·
Replies
6
Views
2K
B Simple cheap method of measuring mass distribution of object
  • · Replies 27 ·
Replies
27
Views
6K
B Question about the allassonic effect
  • · Replies 3 ·
Replies
3
Views
2K
B Can Height, Shadow Length, and a Photo Reveal a Person's Location?
  • · Replies 7 ·
Replies
7
Views
1K
I How Does a Pressurized Tank Empty Over Time Through a Hole?
  • · Replies 3 ·
Replies
3
Views
4K
B Does Standing on a Cliff-Top Decrease Force but Increase Energy?
  • · Replies 2 ·
Replies
2
Views
2K
B Isn't a wave what something does and not what something is?
  • · Replies 9 ·
Replies
9
Views
2K
I Are Qin and W equivalent in the Rankine and Otto cycles?
  • · Replies 3 ·
Replies
3
Views
2K
I Projection down 3 dimensions for aperiodic tiling/quasicrystal
  • · Replies 1 ·
Replies
1
Views
2K
I What time structure supports info moving backward in time?
  • · Replies 6 ·
Replies
6
Views
2K
B Why does GPS require an accurate clock?
  • · Replies 25 ·
Replies
25
Views
5K
I Radius of Gyration: Dist to Axis & Mass Concentration
  • · Replies 6 ·
Replies
6
Views
3K
I Deterministic chaos in linear systems
  • · Replies 1 ·
Replies
1
Views
2K
I What does peak intensity mean in qualitative XRD?
  • · Replies 1 ·
Replies
1
Views
2K
B Examples of discoveries without a hypothesis?
  • · Replies 21 ·
Replies
21
Views
2K
I On the stability of an LTI circuit
  • · Replies 1 ·
Replies
1
Views
2K
I Is it possible to have a breathable atmosphere at 6 atm
  • · Replies 11 ·
Replies
11
Views
5K
I Need a practical example of E=mc^2 with real numbers
  • · Replies 1 ·
Replies
1
Views
2K
I What is the most efficient radiator shape?
  • · Replies 6 ·
Replies
6
Views
2K
B I am trying to understand energy, and its relation to (matte
  • · Replies 6 ·
Replies
6
Views
2K
I Hooke's Law: Changes for Large Displacements
  • · Replies 3 ·
Replies
3
Views
1K
B Is airspeed irrelevant in determining airplane travel time?
  • · Replies 11 ·
Replies
11
Views
2K
I Poynting's Theorem in Griffiths' Electrodynamics
  • · Replies 3 ·
Replies
3
Views
2K
B Why Do We Lose Cell Phone Connection Outdoors Without Buildings or Cars Nearby?
  • · Replies 3 ·
Replies
3
Views
2K
Physics EE (Extended Essay) on Bicycle Stability
  • · Replies 6 ·
Replies
6
Views
3K
B How do helmets help prevent injury to the head?
  • · Replies 20 ·
Replies
20
Views
5K
B Calculate Gravity with Ruzanna from the Netherlands
  • · Replies 30 ·
2
Replies
30
Views
4K
A Calculating the spontaneous emission rate for a material
  • · Replies 2 ·
Replies
2
Views
2K
B Who drew the first model of the atom?
  • · Replies 13 ·
Replies
13
Views
7K
Is Learning Existing Knowledge Essential Before Developing New Theories?
  • · Replies 6 ·
Replies
6
Views
2K
A Calculating air gun energy vs PSI & bore diameter
  • · Replies 4 ·
Replies
4
Views
5K
I Is this expression for Mass Flowing Out of a Bottle correct?
  • · Replies 1 ·
Replies
1
Views
1K
B Creation of PE - WHEN is it created?
  • · Replies 23 ·
Replies
23
Views
2K
I A model of what makes up the physical world
  • · Replies 85 ·
3
Replies
85
Views
9K
I List of hyperfine structure of the elements?
  • · Replies 4 ·
Replies
4
Views
2K
I Experiment Ideas using an MRI scanner?
  • · Replies 31 ·
2
Replies
31
Views
5K
I Poynting Theorem: What Does it Physically Mean?
  • · Replies 1 ·
Replies
1
Views
1K
B Laws in Otto, Diesel, etc. cycles
  • · Replies 12 ·
Replies
12
Views
2K
A Why does a guitar string "beat" as if it is out of phase?
  • · Replies 11 ·
Replies
11
Views
3K
A Question about energy transfer between Rare-Earth ions
  • · Replies 5 ·
Replies
5
Views
2K
B A couple of links about, not from science
  • · Replies 16 ·
Replies
16
Views
6K
I Musings on waves - possible or already realised?
  • · Replies 4 ·
Replies
4
Views
1K
I Wire loop in a static homogeneous field question
  • · Replies 8 ·
Replies
8
Views
2K
B What does coefficient of increase of physical quantity mean?
  • · Replies 3 ·
Replies
3
Views
2K
I How Can Muscle Strain Be Measured?
  • · Replies 1 ·
Replies
1
Views
1K
B Royal Society revives a strange old document
  • · Replies 17 ·
Replies
17
Views
3K
I Who's moving towards whom in Doppler effect situations?
  • · Replies 14 ·
Replies
14
Views
2K
B Can time travel affect cell phone communication?
  • · Replies 10 ·
Replies
10
Views
3K
I 3rd Order Aberrations from Paraxial Rays?
  • · Replies 7 ·
Replies
7
Views
1K
I Analysis of Ultrasonic Waves at a point
  • · Replies 7 ·
Replies
7
Views
2K
I Does an airplane have to nose down in order to follow a curve?
  • · Replies 122 ·
5
Replies
122
Views
12K
Help with Remote Sensing Finals: Spatial Res., Radiometric Res., Resampling
  • · Replies 2 ·
Replies
2
Views
2K
B Signal Attenuation (capacitive pickup)
  • · Replies 5 ·
Replies
5
Views
1K
A Recently, I want to write something about data in physics
  • · Replies 5 ·
Replies
5
Views
2K
B Do Shadows from Multiple Sticks in a Circle Point in the Same Direction?
  • · Replies 26 ·
Replies
26
Views
2K
B What is the GZK Cut Off Point and why does it happen?
  • · Replies 3 ·
Replies
3
Views
2K
I What Is the Equation Relating Wind Erosivity to Velocity and Air Density Called?
  • · Replies 1 ·
Replies
1
Views
1K
B Gravitational difference between a black hole and a star
  • · Replies 3 ·
Replies
3
Views
2K
I Where does the missing energy go in an inelastic collision?
  • · Replies 2 ·
Replies
2
Views
2K
I Emission lines and absorption lines
  • · Replies 2 ·
Replies
2
Views
2K
I Iron bar wrapped with a solenoid
  • · Replies 1 ·
Replies
1
Views
2K
B Unveiling the Mystery of Invisible Atoms
  • · Replies 7 ·
Replies
7
Views
2K
I How Can I Accurately Fit an Airy Distribution Over Noisy Resonance Data?
  • · Replies 9 ·
Replies
9
Views
4K
I Deterministic chaos and randomness
  • · Replies 8 ·
Replies
8
Views
3K
I Question about the angle between two targets as distance increases....
  • · Replies 17 ·
Replies
17
Views
3K
I Calculate measurement uncertainty? I made one measurement....
  • · Replies 13 ·
Replies
13
Views
3K
A Sufficient conditions for Rayleigh-Taylor instability
  • · Replies 1 ·
Replies
1
Views
2K
Please help. Skating physics question I can't answer.
  • · Replies 4 ·
Replies
4
Views
1K
I Why do the glass doors at grocery stores become foggy when...
  • · Replies 5 ·
Replies
5
Views
2K
B Why do rockets explode so easily when they tip over?
  • · Replies 6 ·
Replies
6
Views
2K
B Is There Truly an Inside and Outside?
  • · Replies 9 ·
Replies
9
Views
2K
I Shear force and bending moments graph
  • · Replies 25 ·
Replies
25
Views
3K
B Running on Ice: My High School Story
  • · Replies 5 ·
Replies
5
Views
2K
I Understanding the Parameters of an Ideal Refrigeration Cycle
  • · Replies 1 ·
Replies
1
Views
1K
I Transition between energy and mass
  • · Replies 13 ·
Replies
13
Views
2K