Scale Definition and 743 Threads

The Southern California Linux Expo (SCALE) is an annual Linux, open source and free software conference held in Los Angeles, California, since 2002. Despite having Linux in its name, SCALE covers all open source operating systems and software. It is a volunteer-run event.
The event features an expo floor with both commercial and non-profit exhibitors, as well as 4 days of seminars on the topic of Linux and Open Source software. Sessions and presentations cover a broad spectrum of topics and technical levels.
SCALE grew out of a series of LUGFests put on by the Simi Conejo Linux Users Group in the late 90s. There were four of them, held every 6 months at the Nortel development facility in Simi Valley, California. They ended when Nortel closed that facility in 2001. Subsequently, members from SCLUG, USCLUG and UCLALUG organized to create a more regional event, which they named the Southern California Linux Expo.
Companies, organizations and projects represented at SCALE include Linux-based projects such as Debian, Gentoo Linux, the Fedora Project, KDE and GNOME, other open-source operating systems including NetBSD and FreeBSD, software projects such as Django, open-source database systems such as MySQL and PostgreSQL, other open-source applications such as Drupal, Inkscape, MythTV and The Document Foundation, activist organizations such as Software Freedom Law Center and the Electronic Frontier Foundation, major technology companies such as IBM, HP and Sharp, web companies including Google, Facebook and eHarmony, and internet projects including OpenStreetMap.

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

    World within Planck Scale & QM/GR Unification

    After reading more about Loop Quantum Gravity. I realized they tried to solve quantum gravity by literally sweeping Planck scale under the rug. That is. The smallest volume and area of the spin networks in LQG is Planck size. In String Theory, they make the string Planck size too. They are just...
  2. R

    Is Quantum Gravity only related to Planck Scale?

    Is the need for Quantum Gravity only related to understand what goes on in the Planck Scale between quantum fields and curvature of spacetime where they collide. Or is it a more general solution to how quantum object is connected to spacetime (or quantum spacetime)? Let's take the example of a...
  3. C

    What is the Correct Order of Weights on a Balanced Scale?

    Homework Statement The arms of a scale are of equal length so that when weighing objects, one side will hang lower if the load is heavier on that side. Homework Equations List the weights P1 through P4 in order starting from the heaviest and ending in the lightest based upon the...
  4. M

    How do I calculate scale weight for testing a scale glider?

    Hello all - I'm new to the forum - I hope some kind person can help with a question of calculating scale weight in a scale model of a glider. I want to test the glide ratio of a glider design by making a 1:4 scale model and thowing it from a certain height at a certain speed and measuring...
  5. A

    Do Vessels with the Same Base Area Have Different Weighing Scale Readings?

    Reading on a weighing scale... Homework Statement Two vessels have the same base area but different shapes.The first vessel takes twice the volume of water that the second vessel requires to fill up to a particular common height. IS the force excerted by water on the base of the vessel same...
  6. D

    Atomic & Subatomic Particle Scale | Standard Model Info

    Hello All, Does anyone have a picture/chart in their possession depicting the scale of atomic and subatomic particles? I'm basically looking for a diagram that shows the relationship of atomic matter according to size (IE: Atom Nucleus>Proton>Quarks). Also a description of each particle in the...
  7. R

    Exploring the Connection between Planck Scale Mass and Gravity

    Lisa Randall's states in the book "Warped Passages" dealing with the Hierarchy Problem: "The Plank scale energy determines the strength of gravitational interactions...the strength is inversely proportional to the second power of that energy...A huge Plank scale mass is equivalent to...
  8. M

    Designing a Scale for Bakery Ingredient Measurement

    I need to design a scale. It is a simple 2-D problem. All you need to know is that it's a plate on a vertical spring. Each end of the plate slides a little ways into an indent. It is a scale for weighing ingredients in a bakery. A weight of 22lbs (+or- .25 lbs) is acceptable. If there isn't...
  9. N

    How to scale an input number range ?

    Hello all, I'm a 3D graphist trying to deal with particles motions and attributes for visual FX I have a surface mapped with a black and white picture. Those different grey values gives me a x value inbetween 0(min) and 255(max). Particles are shot from this plane and from random positions and...
  10. M

    Large scale Roberval Balance/Beam design help, please

    [b]1. Design and engineer a scale capable of weighing human beings. I've elected to use Roberval's basic design because of its stability. Consideration: The structure must be erectable by two persons using only human powered hoisting devices. I will use water in the counterweight and man-bucket...
  11. marcus

    New Limits on Planck Scale Lorentz Violation (Floyd Stecker)

    http://arxiv.org/abs/1102.2784 New Limits on Planck Scale Lorentz Violation from Gamma-ray Burst Polarization Floyd W. Stecker 3 pages, submitted to Phys. Rev. Letters (Submitted on 14 Feb 2011) "Constraints on possible Lorentz invariance violation to first order in E/M_{Planck} for photons...
  12. R

    Can Fractals Predict Prime Positions Through Partition Numbers?

    The guiding premise of this thread is the following proposition: If fractals play a role in the behavior of partitions, then maybe, just maybe, they play a role also in the positioning of the primes; and if they do, then who is to say that the two, prime numbers and partition numbers, cannot at...
  13. T

    Find the actual length of a wall on a map with scale 1:25000

    Homework Statement The scale on a map is 1:25000. The length of a wall on the map is 3.2 mm. Find the actual length in metres.Homework Equations The Attempt at a Solution
  14. D

    How could spacetime become discretised at the Planck scale?

    In early 2010 I attended this inaugural lecture by string theorist- Prof. Mavromatos entitled 'MAGIC strings'. In it he proposes that some string theory models may violate Lorentz symmetry at the Planck scale resulting in a kind-of foamy spacetime that could be observed by differing arrival...
  15. D

    My Puzzle: Does Light Travel Instantly in a Smaller Scale?

    Hi every one. Im new on this forum,and my question is my reason for joining. iv seeked this question for a long time now,and it confuses me.The answer may be very simple to a peron that already knows the answer,me on the other hand... ! hasnt got a clue...
  16. 1

    Can a 1/60th Scale Model Locomotive Truly Mimic the Original's Performance?

    Just a fun question.. If one were to build a 1/60th scale model (example) of a locomotive, say of this one: exactly, meaning the same materials in the same manner, exactly the same in 1/60th scale, I would presume it weighs 1/60th of the original train. But would it.. Have 1/60th...
  17. R

    Integrating an equation with scale factor

    Homework Statement Ok, the problem is simple enough, I think. I just think I'm missing something obvious. I have an equation involving the scale factor R(t) and need to integrate it. I am at the first equation and need to get to the second by integrating (with respect of R, I suppose)...
  18. M

    Is the Stack Effect Effective for Small Electronic Enclosures?

    Does it make sense to try to use the chimney effect/stack effect to increase heat dissipation for a smallish electronic enclosure? I'm thinking that if I hollow out the two vertical ends of the enclosure, I can get a 100mm high 5x5mm "chimney" on each side. On paper I get about 0.09 Pa...
  19. D

    Mass of chair on weighing scale and wall

    For what it's worth, I came up with this problem, so perhaps it cannot be solved, or there could be a way to solve it without using all of the information given. Homework Statement A chair rests on a weighing scale and a wall. The relevant surfaces of the scale and the wall are...
  20. A

    What is meant by a certain theory has a scale ?

    What is meant by "a certain theory has a scale"? In the context of high energy physics (and in other branches too) I sometimes hear that a certain theory has "an intrinsic scale in it (the theory)". What is implied by that? How do I find out if a given theory has a scale in it? Can there be...
  21. MTd2

    What is the Planck Scale for AS gravity?

    The coupling constant runs so the Planck scale changes. What is it at the AS point?
  22. M

    Maximum redshift - can it move light off the scale?

    Light is redshifted and the greater the z, the further the spectral shift is to the left. Is there a point at which low-frequency EM (radio/micro waves) shifts below the spectra and disappear? The real question - Is there a z, and thus an implied distance, at which the highest energy...
  23. F

    Very Large Scale Wind Generator

    Renewable Energy (RE) Sources are a hot topic, but careful study of the solutions thus far offered make realizing RE as more than a tiny percentage of demand unrealistic. I have been thinking on an idea for a very large scale wind generator that I think is a potential solution for many of the...
  24. J

    Is entropy 'S' measured on some fixed scale?

    I'm not a science student. Therefore, please keep your replies as simple and straightforward as possible so that your help can be fully appreciated. Thanks. Is entropy 'S' measured on some fixed scale? If yes, then what's the maximum value? When oxygen and hydrogen react to form water, the...
  25. J

    Can a Bluetooth Module's Range be Configured and What are the Options?

    Hi guys. I am new here. Is there a bluetooth module which you can configure the range of the the module? For example from a 5 meter range to about 1 ft or less... Currently planning on using BTSerial1 Bluetooth module. Any idea of a less expensive and better bluetooth module? Im new to this...
  26. G

    What Is the Age of the Universe According to Different Models of Cosmology?

    Homework Statement From CMB measurements, we know the total density of the Universe matches the critical density to 2 percent. From observations of Supernova it seems that 70 percent of that is in the form of dark energy. But the supernova observations are not as solid as the CMB result...
  27. Q

    Why Does Gravity Affect Weight?

    Hi. I'm an absolute noob at physics, so I went to the library and checked out a couple beginner books. Basic Physics: A self-teaching guide and Science 101 Physics. I'm just getting started reading physics 101 and read the following statement: "...all you have to do to determine your...
  28. A

    Elementary level question on Accelerometer scale factor

    Hi, I've received a new accelerometer with a scale factor declared in datasheet as: 800 mV/g @ 1.5g. I googled and searched the forum but still can't fully be sure I understand the accelerometer and its functioning, so please correct me where I'm wrong: One thing that very helped me to get...
  29. W

    Understanding Multiple Scale Setup: M1 Hanging from Two Identical Scales

    Howdy! I saw this question posted on someones blog the other day and just could not for the life of me reason out an answer that i could 100% agree with. Say a block of mass, M1, hangs from a hypothetical hanging scale of 0 mass, which in turn hangs from a second identical scale, which in turn...
  30. L

    C/C++ Why isn't my code producing a graph with a log scale in C++?

    can someone tell me what is wrong with my code. i get the graph that i want but not with the log scale... i have tried multiple methods. this is the last one i tried (its part of a canvas which is split into quadrants) TH1F* h3 = (TH1F*) inputfile3 -> Get("pdg"); c->cd(3)...
  31. P

    Reading a scale as a function of time (need formula)

    Homework Statement A scale is adjusted so that when a large, shallow pan is placed on it, it reads zero. A water faucet at height h = 3.1 m above is turned on at t=0 and water falls into the pan at a rate R = 0.16 kg/s. Determine a formula for the scale reading as a function of time t for t...
  32. S

    How Do You Calculate the Mass of a Car Using Force and Acceleration?

    Homework Statement To determine the mass of a car, a student (with a friend at the wheel) pushes the car holding a bathroom scale between himself and the car. The scale maintains a constant reading of 433 N while the car accelerates on level ground. At the conclusion of the experiement, his...
  33. P

    Understanding Buoyant Force Measurement with a Regular Scale | Explained

    Hi everyone this is my first post so forgive me if i leave out details A friend of mine tried to measure buoyant force by the following means Using a regular scale where the setup is sitting on top of it 1) Using a scale, he measured the object and found the scale to give x[grams] 2) Then...
  34. T

    Another large scale structure of the universe idea

    Has the following explanation for the large scale structure of the universe been considered and discounted?Consider a universe many billions of times the size of the observable universe, so big that the homogeneous nature of the universe could even be an illusion. At a very large distance...
  35. Z

    Does Temperature Affect the Accuracy of a Steel Metre Scale?

    Homework Statement A metre scale made of steel is calibrated at 20 degrees Celsius to give correct reading. Find the distance between 50cm mark and 51cm mark if the scale is used at 10 degrees Celsius. Coefficient of linear expansion of steel is 1.1 x 10-5 C-1 Homework Equations...
  36. S

    Small Scale Yielding: Meaning Explained

    Homework Statement Can someone please explain to me the meaning of the term 'small scale yielding'? Homework Equations The Attempt at a Solution I know it's in the field of fracture mechnics and has something to do with the stress at the crack tip but i don't have any idea what...
  37. R

    What is the Fuzzball Hypothesis?

    hi, how can we be sure that quantum gravity effects appear only at the Planck scale? when i look at the quantum mechanics effects, there seem to be a relationship with general relativity so both could be the same phenomena . i thought that the aim of quantum gravity is to find out the...
  38. W

    Spring Scale Tension Force Problem

    Homework Statement You place a 8.10-kg television on a spring scale. If the scale reads 77.95 N, what is the acceleration due to gravity at that location? Homework Equations f=ma fg=mg fnet=mAnet Ff=μῦF The Attempt at a Solution Fnet = T - Fg mAnet = T - Fg 8.1(Anet) = T -...
  39. M

    What Does the Scale Show When an Elevator Accelerates Upward?

    A woman stands on a scale in a moving elevator. Her mass is 60.0 kg, and the combined mass of the elevator and scale is an additional 815 kg. Starting from rest, the elevator accelerates upward. During the acceleration, the hoisting cable applies a force of 9410 N. What does the scale read...
  40. N

    Elevator and spring scale question

    Homework Statement A 72.0 kg man is standing on a spring scale in an elevator at rest. The elevator ascends, attaining it's max velocity of 1.20 m/s in .800s. It travels with this constant velocity for 5.00s. The elevator then undergoes a uniform acceleration in the negative y direction for...
  41. R

    Scale of uncertainty principle

    in what scale can we consider the uncertainty principle?can it be considered in the non atomic scale?
  42. F

    Finding Scale Reading with New Resistor in Circuit

    The meter in the circuit shown in the image has an uncalibrated linear scale. With the circuit as shown, the scale reading is 20. Find the scale reading when another 2000Ω resistor is connected across XY.
  43. M

    General relativity breaks down at Planck scale

    Why? Some measurements confirm this statement? Or this is a theoretical conclusion?
  44. E

    Does string/M-theory make falsifiable predictions at planck scale?

    Stephen Hawking's recent book The Grand Design uses M-theory to predict a multiverse, which then does away God via the anthropic principle. A common criticism that string theory makes no experimentally falsifiable predictions which is countered that experiments do not have enough energy to...
  45. D

    Rotational–vibrational coupling scale model

    I feel like playing with a scale model of this: http://en.wikipedia.org/wiki/Rotational%E2%80%93vibrational_coupling Do chemistry supply stores sell any? For educationnal purposes? Or do I have to build one?
  46. K

    Scale Transformation of Density Function

    Homework Statement Two random variables, x and y. Density functions are m(x) and f(y), respectively. x is defined on [0,1] and y on [0,1-\rho]. I also know that \int_{0}^{1} m(x) \,dx = 0.5 \int_{0}^{1-\rho} f(y) \,dy = 0.5 Knowing that f(y) is essentially a transformation of m(x)...
  47. F

    Why do domains expand in a way that makes each point equivalent?

    I didn't make this, but I think it's one of the coolest things ever. http://www.newgrounds.com/portal/view/525347 enjoy
  48. H

    Glide Ratio & Scale: Designing Gliders for Maximum Air Time/Distance

    Hi I am looking into the design of gliders with good L/D / Glide Ratio. It seems hard to find what is the most efficient full size glider, and the same goes to a scale r/c type one too. So any ideas? If i was to start from scratch, what should i be looking at to get the best l/d...
  49. J

    Economies of Scale and Diminishing Marginal Return

    Much recent economic efficiencies have come from economies of scale and specialization of labour. http://en.wikipedia.org/wiki/Thomas_Robert_Malthus but at what point is there diminishing marginal return. The more people we have the more tasks can be broken down into smaller and smaller...
  50. M

    Estimating area under a curve in log scale

    Homework Statement Hi guys, I'm stuck on this question in exam revision: I need to estimate the area under the following curves (I don't have the equations of the curves) http://img819.imageshack.us/img819/3249/question.jpg The curves are magnitude diagrams in the log-log scale...
Back
Top