Running Definition and 386 Threads

Running is a method of terrestrial locomotion allowing humans and other animals to move rapidly on foot. Running is a type of gait characterized by an aerial phase in which all feet are above the ground (though there are exceptions). This is in contrast to walking, where one foot is always in contact with the ground, the legs are kept mostly straight and the center of gravity vaults over the stance leg or legs in an inverted pendulum fashion. A feature of a running body from the viewpoint of spring-mass mechanics is that changes in kinetic and potential energy within a stride occur simultaneously, with energy storage accomplished by springy tendons and passive muscle elasticity. The term running can refer to any of a variety of speeds ranging from jogging to sprinting.
Running in humans is associated with improved health and life expectancy.It is assumed that the ancestors of humankind developed the ability to run for long distances about 2.6 million years ago, probably in order to hunt animals. Competitive running grew out of religious festivals in various areas. Records of competitive racing date back to the Tailteann Games in Ireland between 632 BCE and 1171 BCE, while the first recorded Olympic Games took place in 776 BCE. Running has been described as the world's most accessible sport.

View More On Wikipedia.org
Recent contents Top users
  1. P

    B Is It Better to Run or Walk in the Rain?

    I have seen running or walking in the rain puzzle many times. I have not seen a quick answer to the question yet. I was provoked, when a newspaper claimed a professor had been studying it a bit and came up an answer. Honestly I doubt anyone has studied. My answer is that one should go as...
  2. emilmammadzada

    Running the tests njoy16 in ubuntu terminal

    With which commands can I build and run the tests files in njoy16 on ubuntu?
  3. tysonman166

    MCNP6 simulation still running but no change for a while

    After previous thread my program finally work and i could get the Keff final. But problem rises when MCNP want to do "predictor" and "corrector". I already wait for 3 hours but there is no update for the corrector (screenshot attached). heres the profof that my program still running: and in...
  4. M

    Python Running a for loop in parallel via multiprocessing

    Hi PF! I'm wanting to run a function in parallel, which I've denoted integrate below, on line 33. from math import * from random import * import math, scipy.special import statistics import multiprocessing as mp # READ MATHEAMTICA FUNCTIONS with open("funcL.txt") as fileL: fL =...
  5. A

    I How can you make a free body diagram for someone running then sliding?

    Let's say you are riding a bike very fast, and then you sharply turn into a slide (where the bike is sliding perfectly sideways). I'm trying to calculate the angle that the bike would be leaning at, but I'm having trouble creating the free body diagram. Right now I have the normal force and...
  6. F

    Saving the state of a program versus running the program

    Hello Forum, I am not completely clear on the idea of saving the state of a Python program. We can write a .py program which has instructions, formulas, variables, user inputs, and uses data from an external file, etc., and run such file. However, running the program is different from saving...
  7. S

    Home-made electrical motor not running

    Here are the details. I started with a nut and bolt, and drilled a hole down the center of it. I inverted and glued into place a carbon fiber rod in the hole. I glued a bit on the end of the bolt. I wrapped magnet wire around the bolt on each side of the rod 400 times. I made a commutator using...
  8. H

    Engineering Highest velocity of a girl running a 60m dash

    So i know the total time is 8.6 s t1 + t2 = 8.6s And from the (v^2 - v0^2 = 2as) i will get that after 15m the velocity which is also the highest velocity v^2 = 30a And then after that the velocity will be constant (s = v*t) 45/t2 Now i am stuck here because i have 3 equations but 4...
  9. Arman777

    Can I Run My Code Online from a Distant Server Using Azure?

    I am trying to run a code from my computer but its qualities are kind of low. I am trying to run a heavy program and its taking about 40-50 min to solve it. Is there a some sort of a general program where I can upload some files and run the code online from a distant server ? Is there a such thing ?
  10. J

    Find the power of a man running (work and potential energy)

    I started of by trying to find the work for I got stuck because I did not know how to solve for the Force. I solved for the distance by doing 3=d/5s which gave me 15m. but then I couldn't figure out where to go next in the problem because I don't know how to solve for (f) so an explanation would...
  11. G

    Question about Plasma Ball (can I leave it running all night?)

    Hi there! I wanted to know if i can leave the Plasm Ball turned on all night in my room without any problem. Thanks in advance!
  12. Arman777

    Python Running a Github File on VS code for windows 10- File system problem (

    I am doing a cosmological work and I need to run a code form this github page https://github.com/ja-vazquez/SimpleMC I download the whole repository as .zip file and I inserted into my desktop. Then I opened it through vs code and this is how it looks like The problem is that, when I run...
  13. C

    C/C++ Running a C++ project in Xcode Mac Os

    I am trying to run an Xcode project in c++ on a Mac Os. I started by creating new project, selecting command line tool options so that I may use c++ option and proceeded with completing the product name fields and the directory where to save the project on my Mac. The default project that is...
  14. Mark44

    Auto/Motor Get a 1945 Harley running again

    My current DIY project is the 1945 Harley-Davidson UL. The engine is a "side valve" AKA flathead, similar to the ones in older lawnmowers. Pretty low-tech, with manual advance points ignition. Not shown in the pictures are the engine, which is missing a lot of parts, but does include a bunch of...
  15. jack action

    Python Running Electrum in Python from the CLI on Ubuntu 20

    I'm trying to run electrum (written in python) from the command line on Ubuntu 20. I have 2 similar computers. The first one has version 4.0.4 and once in the electrum folder, I type electrum (the name of the executable file) and it executes whatever command I ask for. My problem is with my...
  16. F

    Danger of spending time inside a running, not moving car

    Hello Forum, I am not sure this question really belongs here but I was not sure where else to post...it is about science and health after all. I started thinking about this question seeing so many people have sadly become homeless and living in their cars because of the pandemic and job crisis...
  17. A

    Why is my CPU not running at max published speed?

    I have a Intel(R) Xeon(R) E-2274G CPU @ 4.00GHz 4.01 GHz machine which has a published max speed of 5.0 GHz. However, when I run it under load on all 4 cores, it only gets up to about 4.5 GHz: Could someone explain to me why it's not ramping up to the full 5.0 GHz or what I could do to...
  18. J

    I Born rule: time running forwards and backwards?

    Can the Born rule be understood as time running both forwards and backwards simultaneously? The probability ##P_{i \rightarrow f}## that an initial quantum state ##\psi_i## is measured to be in final quantum state ##\psi_f##, after evolving according to the unitary time-evolution operator...
  19. J

    MHB How to Choose the Right Running Shoes for You

  20. F

    Programs running inside a browser....

    Hello, I noticed that there are some programs that use the browser to run. For example, when launched, the program runs inside the browser as it it was our computer was a local server. I am familiar with the client/server model where a computer (client) communicates with a remote machine...
  21. tomdodd4598

    I QED - running of coupling (beta function)

    Hey there, I am a little confused about the way most textbooks and notes I've read find the beta function for QED. They find it by looking at how the photon propagator varies with momentum ##q##, in particular in the context of a ##2\rightarrow2## scattering process which is proportional to...
  22. tomdodd4598

    I Renormalisation scale and running of the φ^3 coupling constant

    I am still rather new to renormalising QFT, still using the cut-off scheme with counterterms, and have only looked at the ##\varphi^4## model to one loop order (in 4D). In that case, I can renormalise with a counterterm to the one-loop four-point 1PI diagram at a certain energy scale. I can...
  23. M

    Mathematica Running a matrix of integrals in parallel

    Hi PF! I am trying to computer a matrix of integrals. Think of it something like this: Table[Integrate[x^(i*j), {x, 0, 1}], {i, 0, 5}, {j, 0, 5}] I have 16 cores, and would like to have each core handle a specified amount of integrals. Anyone know how to do this? Thanks so much!
  24. M

    Python Running CFD with python and bash: not in agreement

    Hi PF! I'm running a CFD (computational fluid dynamics) program OpenFOAM. Liquid is sucked from a tank, where the velocity at the tank outlet (suction point) is controlled by a python script. The boundary condition for velocity at the outlet is below, line 4 being the velocity prescribed at...
  25. Z

    Running time of FirstFit(FF): Original and Improved version

    Hi, I am trying to understand the running time of FF both the original and improved version. For the original version book says: What I understand from this that before placing the items, FF traverses all the bins from beginning to end i.e. n bins. Now each bin can have n items, because of...
  26. M

    Python Running multiple bash scripts simultaneously

    Hi PF! How can I run two bash scripts run1.sh run2.sh simultaneously (having two separate terminals, one for each run.sh, is fine but I'd like to execute the python script from a single terminal)? Won't the below execute run1.sh and then when it's finished execute run2.sh...
  27. F

    I Running on the Space Station compared with running on Earth

    The ISS includes a very fancy running machine which astronauts use to maintain fitness. Several astronauts have run Marathons at the same time as the earthly race (London, Boston etc) and, while there have been many press reports of these runs, none has given any indication as to how hard it is...
  28. T

    B Who will win this running race?

    Who will win this running race? How many seconds are their scores?
  29. Tone L

    Running a Raspberry Pi with a Solar Panel

    The objective: Determine the daily power draw of a Raspberry Pi (Watts per Day) and determine the average daily power generation of a solar panel. Will energy generated be greater than energy drawn? Lets begin, I have a 9 Watt, 18 Volt solar panel. This solar panel is charging a sealed lead...
  30. IamVector

    Combine swimming and running to get to the final point the quickest

  31. Z

    Prime Number Detection: Running Time of Algorithm

    Hi, I want to know if the algorithm to find prime number has running time O(sqrt(N)) or O(log^2N). log^2N is better than sqrt(N). Also for large values can it become a pseudo polynomial algorithm? Zulfi.
  32. tomdodd4598

    I Renormalisation and running of the φ^3 and other coupling constants

    Hey there! I am still rather new to renormalising QFT, still using the cut-off scheme with counterterms, and have only looked at the φ^4 model to one loop order. In that model, we renormalise with a counterterm to the one-loop four-point 1PI diagram at a certain energy scale. Do I simply, in...
  33. HAgdn

    Total Current running through a wire due to the drawn currents

    I made this scenario where I am looking for the total current running through a wire (I_0). I am also trying to model the current running through the wire (I_0) considering the harmonics contributed by the four loads. But since Fourier stated that a complex waveform is the discrete sum of some...
  34. M

    C/C++ Running a C++ code from oomph-lib (a CFD software)

    Hi PF! I recently installed the computational fluid dynamics software oomph-lib, which is similar to OpenFOAM. After installing, I'm trying to run a tutorial provided with the program, described here. I think all I need to do it run the .cc file here, so I type into the terminal >> gcc...
  35. I

    Running a microwave oven empty

    So I know it's generally not a good idea, but I wondered what actually is the limiting factor. Does the magnetron heat up much more quickly? - and if so what's the physics going on that's causing it to heat up - is it increased current in the resonant cavities ? Also is it bad for the cathode...
  36. Bellahhhh

    How can rounding errors affect calculations in stopping distance?

    I did the first three questions and found that the ignition distance without breaking would be 75 m, it would take 8.3 seconds to stop the car with a maximum acceleration of -3.0 m/s^2 and you would go 103,75 m if so.
  37. Edwina Lee

    Running an AC Mains powered fan at different speeds

    My mother has an alternating current extractor fan plugged into the mains. I want to run it at different speeds. I am thinking of using a light dimmer switch to deliver variable voltage to control the fan speed. (An electrical engineer friend told me that it is possible only if the fan is...
  38. M

    A Verifications of running charge / running mass

    Hi everyone, I understand that the phenomenon of running charge predicted by QFT has been experimentally verified: the physical charge on an electron really does vary with the energy at which it is measured. I have two questions: (1) Does anyone know what the canonical experiments confirming...
  39. B

    Fan motor stalling on running winding

    Hi Guys, Single phase capacitor start induction run motor keeps running even after start capacitor is disconnected by centrifugal switch. But in practice, table fan motor stalls and hums when I disconnect starting capacitor when fan motor reaches full speed. Why one phenomenon works in certain...
  40. S

    I Running through a complex math derivation of plasma frequency

    Background of problem comes from Drude model of a metal (not necessary to answer my problem but for the curious): Consider a uniform, time-dependent electric field acting on a metal. It can be shown that the conductivity is $$\sigma = \frac{\sigma_0}{1-i\omega t}$$ where $$\sigma_0 =...
  41. F

    Running multiple studies in COMSOL

    Hi. Can anyone help me to figure out how to run multiple studies in COMSOL? I want to first compute the displacement of a membrane using temperature load and then find the capacitance between two electrodes using electrostatics. The idea is that as the membrane moves upwards the capacitance will...
  42. N

    How can the time dilation equation explain faster moving clocks running slower?

    Since for the two events of Samir starting the stopwatch, and the stopwatch reaching 10.0s, Samir and his stopwatch are stationary from his own frame of reference, I said it was the proper time and that delta t0 = 10s. Then the speed of the moving frame of reference was 0.6c. I thought placing...
  43. W

    Self-Testing on a PC running Win 10

    Hi All, I am having what seems to be power-related problems on my Win10 PC. I have looked into Device Manager, I ran DxDiag, checked into Msinfo32 and diagnostics say everything is fine. Problem is light on f12 key turns off and computer powers off despite receiving power ( you can see the...
  44. C

    Service drop wire running to my house and EM fields?

    Hi, I have a case of elevated AC Magnetic field in the house, strongest nearest the electric meter and along the service drop line connecting the house to the street power lines. Should that service drop line measure no current or fields when I shut off my main circuit breaker? it seems shutting...
  45. R

    Unexpected error while running hello world code on vs studio

    Homework Statement : [/B]Write a C program to print hello world 2. The attempt at a solution: I am completely new to programming. I am learning C at present. In my college, we use linux. Since my pc has windows installed so I am using cygwin terminal to use linux commands from windows. I am...
  46. ohwilleke

    I Is there new LHC data on coupling constant running?

    Question Has the LHC released any papers or reports on the observed running of any of the three Standard Model coupling constants with energy scale from either Run-1 or Run-2 data (or both data sets)? Last time I looked I couldn't find any data As of January 2014, I had not locate any papers...
  47. S

    Running / walking for half distance

    Homework Statement Arthur and Robin both can run at speed v_r and walk at speed v_w, with v_r > v_w. They set off together on a journey of distance D. Robin walks half of the distance and runs the other half. Arthur walks half of the time and runs the other half. How long does it take Robin to...
  48. J

    Water sometimes drips from the exhaust of a running car....

    Homework Statement You may have noticed that water sometimes drips from the exhaust of a car as it is running. Is this evidence that there is at least a small amount of water originally present in the gasoline? Homework Equations not sure if there is one. The Attempt at a Solution I'm not...
  49. M

    Car reading 17V+ in the battery when running, how to fix?

    Hi, I have a 2004 Toyota Matrix with 270 000km. It's working great but today when i started my car the battery was going up to 17.2V (i have a battery voltage reader in the car at all time). It's the first time it went up there, it usually stays in the 13-14V. I know something is wrong and I...
  50. M

    Running openFOAM on a Mac: issues with paraFOAM

    Hi PF! I'm using a mac and am running the CFD program openFOAM. As I'm going through a tutorial on openFOAM, I am instructed to type paraFoam & into the terminal. When I do so, I receive this error: This application failed to start because it could not find or load the Qt platform plugin...
Back
Top