What is Drawing: Definition and 558 Discussions

Drawing is a form of visual art in which an artist uses instruments to mark paper or other two-dimensional surface. Drawing instruments include graphite pencils, pen and ink, various kinds of paints, inked brushes, colored pencils, crayons, charcoal, chalk, pastels, erasers, markers, styluses, and metals (such as silverpoint). Digital drawing is the act of using a computer to draw. Common methods of digital drawing include a stylus or finger on a touchscreen device, stylus- or finger-to-touchpad, or in some cases, a mouse. There are many digital art programs and devices.
A drawing instrument releases a small amount of material onto a surface, leaving a visible mark. The most common support for drawing is paper, although other materials, such as cardboard, wood, plastic, leather, canvas, and board, have been used. Temporary drawings may be made on a blackboard or whiteboard. Drawing has been a popular and fundamental means of public expression throughout human history. It is one of the simplest and most efficient means of communicating ideas. The wide availability of drawing instruments makes drawing one of the most common artistic activities.
In addition to its more artistic forms, drawing is frequently used in commercial illustration, animation, architecture, engineering, and technical drawing. A quick, freehand drawing, usually not intended as a finished work, is sometimes called a sketch. An artist who practices or works in technical drawing may be called a drafter, draftsman, or draughtsman.

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  1. H

    Engineering Drawing a circuit diagram for a Boolean expression

    Homework Statement Draw the logic diagram for the following Boolean expression. The diagram should correspond exactly to the equation. Assume the complements of the inputs are not available. B(A'C'+AC) + D'(A+B'C) Homework Equations The Attempt at a Solution I can't find any...
  2. EVriderDK

    Drawing schematics on high voltage components, like transformers etc.

    I know of multisim, but that is mostly fo rlow voltage applications. I need a schematics program like multisim, that has models of big transformer stations, current transformers, fuses, circuit breakers etc. Anyone of you who knows of a tool like this?
  3. T

    Drawing the Design of an SRAM Chip

    Hello everyone, I have come across a question that I am having quite a hard time with. I am to draw a design of an SRAM chip with an organization of 2M*128 SRAM that uses 1K*1K arrays of D latches. And then the questions ends with saying, "if this design is not possible then explain why." I...
  4. S

    MHB Drawing Truth Tables etc. Some clarification please?

    1a)Draw a truth table corresponding to f(X,Y,Z) = \summ(0,2,5,7) Apparently since I know that \summ(0,2,5,7), I also intuitively know that\pim(1,3,4,6) NOTE: I HAVE NO IDEA WHAT THIS MEANSso I know that I have 3 inputs. So I know I have 2^3 rows, starting at 0. So this part is easy, I know I...
  5. S

    Need help defining technical drawing tolerance

    Hi there, I have a technical drawing considering a shaft and a bearing bush (to slip on). The dawing says 85mm diameter H7s6 and I was wondering what does it mean and how can i figure out the tolerances regarding to H7s6, any mathemtical explanation or a online table to look after? Thanks...
  6. N

    Find the max and min of trig function without calc or drawing graph

    Homework Statement y = (4/3)cos(x/2 + pi/6) - (2/3) (0 <= x < 2pi) Find the maximum and minimum values for the trigonometry function without calculus or drawing the graph. Basically in the solution they apply the transformations to the domain given in order to find a new domain...
  7. P

    Drawing schematics for solid state physics research

    Hello, I'm working on a poster and senior thesis in materials science research and need to draw schematic diagrams of a few objects including: -a PLD chamber -Thin films -XRD -SEM -energy diagrams -a sin wave I've downloads inkscape and have tried to draw in powerpoint so far. Are...
  8. H

    Engineering Circuit drawing of two floodlights with relays

    Homework Statement I need to draw a simple electric drawing that will in reality present a circuit with two 500W floodlights connected in such a way that if the primary light dies out, the relay will connect the secondary light to the source. Only the primary light is supplied, while the...
  9. O

    Anyone remember magnetic drawing boards?

    ^^^ that's precisely the one that i need. perfect for math... no chalks or markers. no funny smell, no dust. no maintenance. love the precise erasing as well anyone know where i can pick up one of these...but for adults?
  10. B

    Science or technical drawing in hs

    hello i am going to be in highskool next year wat shud i take science or technical drawing and woodwork? science is hard and i don't want to do accounting but woodwork is cool u make stuff like chairs please help
  11. C

    How Do Sound Waves Interfere in Dual Speaker Setups?

    Homework Statement Two speakers are emitting identical sound waves with a wavelength of 4.0 m. The speakers are 8.0 m apart, directed toward each other. At each of the noted points (a-e) in the above diagram (at 2,3,4,5, and 6 meters, respectively), is the interference constructive...
  12. M

    What is the Purpose of the Arc Function in Python's Turtle Graphics?

    Hi, I'm working through thinkpython and there is an exercise which requires drawing flowers and arcs. I'm having some trouble understanding the arc function. def arc(t, r, angle): """Draws an arc with the given radius and angle. t: Turtle r: radius angle: angle subtended by the...
  13. C

    Statics: Drawing Shear and Moment Diagram

    http://img687.imageshack.us/img687/5889/shear.png I'm having trouble drawing the shear diagram on MAsteringEngineering. I'm pretty sure the values are correct too? I got By = 10.5 and Ay = 9.5 V(x) = -2x+9.5 for the distributed load so when I set V=0, I find the x intercept to be...
  14. C

    The drawing shows a lower leg being exercised. It has a 49 N weight a

    Homework Statement The drawing shows a lower leg being exercised. It has a 49 N weight attached to the foot and is extended at an angle θ with respect to the vertical. Consider a rotational axis at the knee. a. When o θ = 90.0 , find the magnitude of the torque that the weight...
  15. M

    Drawing a contour map for e^(variable)sine(x-t*variable)

    Homework Statement Draw a contour map for T(x,t)=10e^{-\lambda x}\sin(\omega t-\lambda x) 0\leq\lambda x\leq2\Pi and 0\leq\omega t\leq2\Pi Homework Equations The Attempt at a Solution Because those two variables are within that given range I'm not sure how to do this...
  16. K

    Drawing Relative Velocity/Triangle Diagrams?

    Homework Statement A balloon with person A in it has a force of gravity of 3000N acting on it. The balloon has an upward force of 3800N due to the hot air in it. Two people are keeping the balloon hovering just above their heads by holding onto ropes attached to each side of the balloon. If...
  17. M

    Help drawing equivalent resistor diagrams.

    Homework Statement I really just need help understanding how to re-draw a resistor diagram after calculating an equivalent resistor. Now in the picture given in the attachment, you can see that R1 and R6 are in series with each other when I compute their equivalent resistor(R1+R6), on what...
  18. A

    Engineering drawing - projection of lines

    Homework Statement A line Ab inclined at 30• to the Hp has its ends a and b, 25 mm and 60 mm behind the vp respectively. The length of the top view is 65 mm and its vt is 15 mm below the Hp. Draw the projections of the line and locate its ht. also, determine the true length of the line Ab and...
  19. J

    Drawing 3-Phase Voltage Waveforms

    Homework Statement Draw and label the 3-phase voltage waveforms where VAN= 347∠0° Vrms, VAB= 600∠30° Vrms, Frequency: 50Hz, Volts/Division 200, Time/Division: 2 ms 2. The attempt at a solution Im really not sure how to tackle this one. My prof hardly went over this in lecture, but gave this...
  20. B

    Help drawing Mohr's circle with rotated axis

    Homework Statement Plane stress in xy-plane. Use Mohr's Circle to find σx1 σy1 and τx1y1 if the XY axis is rotated counterclockwise θº I want to do my HW problem myself so I'll just put some sample values. If i know how to get this one, i'll know how to do the HW problem(s). (Units won't...
  21. S

    Compt Sci; drawing ball program

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  22. R

    LaTeX The web app that lets you find latex symbols by drawing them

    Does anyone know where I can find this? I'm having a heck of a time finding it on google. It was this little app where you could just draw a symbol and it would give the latex code for the symbol. I remember it saved my a lot of time when I was just learning latex and I would still have a use...
  23. P

    Finding x Values for x + 4 > 2/|x+3|: Algebraic Solution

    find the values of x for which x + 4 > \dfrac{2}{|x+3|} as the | x + 3 | is positive I thought it would be okay to just bring it over so: (x+4)(x+3) > 2 solving this, I get x > -2 and x < - 5 however drawing a sketch of the original question shows that the only value needed is x...
  24. P

    Graphing y = arcsec(e^x) and Finding Derivative: Step-by-Step Guide

    how can I draw y = arcsec(e^x) where x > 0 and 0 < y < pi/2 I've found the derivative which I got to be \frac{1}{\sqrt{e^{2x} -1 }} however, the graph doesn't seem to have any minimum or maximum points. I don't really know how to test this about, as I don't know what arcsec(e^x) is...
  25. tsuwal

    Find the point where the eletrostatic force is maximum. (With drawing)

    Homework Statement https://www.physicsforums.com/attachments/56019 Homework Equations The Attempt at a Solution The net force will be: F=\frac{2*Sin(\alpha)*q1*q}{(d/cos(\alpha))^{2}}=cos(\alpha)^{2}*Sin(\alpha)*qq1/d^{2} Taking the rerivative to find the maximum we...
  26. Petrus

    MHB Drawing the derivative of a graph

    Hello, I have been having problems drawing the derivative of a function. What I mean is that just given the graph of some function $f$ and not its definition, you are supposed to draw $f'$. I understand that when the tangent line of the graph is horizontal, this will correspond to $f'(x)=0$...
  27. C

    Engineering Drawing Circuits: Arduino UNO I/O & Power Setup

    Homework Statement Arudino (UNO) is a Microprocessor. As 13 I/O pins and 8 digital pins and 6 PWMs. Homework Equations The Attempt at a Solution the problem is I don't know how I can power it. I don't think the digital I/O plug can be used as a power source. So I don't know where the I/O...
  28. D

    Drawing Isomers of cyclopentane?

    Homework Statement Draw the products of the mono-chlorination reaction of methylcyclopentane. Indicate the minor and major products. Homework Equations The Attempt at a Solution I've tried looking up examples of how to do this problem but can't seem to find any. From what I...
  29. D

    Drawing a shear force diagram with loads working at an angle

    I was wondering how you incorporate an angled load into a shear force diagram? So far I've only been working with vertical loads and I've looked through my entire book without finding an example with loads at an angle, so I'm not sure what to do here. I know I have to end up at 0 so I see I...
  30. B

    Software for drawing graphs

    Can anyone recommend me software for efficiently drawing graphs? By graphs, I mean graphs from graph theory, i.e. pictoral representation of a network with edges and vertices. I need to minimize the wire crossings in a certain Boolean circuit network I have developed. If the software can...
  31. karush

    MHB -aux11.outcomes in card drawing

    We draw cards from a deck of 52 cards a) list the sample space if we draw two cards at a time my ans to this is ((H2,S2)...(C2,D2)) b) How many outcomes do you have in this experiment but I don't know how they got the answer of 1326 thanks ahead...
  32. Femme_physics

    Drawing Bode Plot

    Homework Statement Given this function in an open loop control system http://img255.imageshack.us/img255/3686/700qa.jpg Draw a bode plot of the transfer function: The upper graph will present the lines for each of the amplification factors for each of the system components, the lower...
  33. C

    Master the FBD Technique: Superhero & Sidekick Hanging on a Rope

    Homework Statement A superhero and his sidekick are hanging motionless from a rope. The superhero’s mass is 90.0kg, while the sidekick’s mass is Homework Equations The Attempt at a Solution i tried drawing it out, but not sure so I divided the rope into two points, one on...
  34. D

    Is There a Problem with My Graph Drawing Homework?

    Homework Statement I need to draw the running coupling constant graph like this one: And I have a formula: \frac{1}{\alpha(\mu)} = \frac{1}{\alpha(M_Z)} + \frac{b}{2\pi}\ln\frac{\mu}{M_{Z}} And I have the necessary data to draw \frac{1}{\alpha_i(\mu)}-\log(\mu) graph (I have...
  35. D

    Circuit drawing mostly constant current

    Hello. I have an integrated circuit that draws current in pulses. The pulses have a duration of about 0.5 ms and a period of 2 ms. I need to make a circuit to put in front of this IC that will smoothen out these current pulses. One option is just to use a resistor and a capacitor. When the IC...
  36. Biosyn

    Probability of drawing a full house

    Homework Statement What is the probability of drawing a full house from a standard deck (52). Homework Equations The Attempt at a Solution These are the two answers I came up with: (52/52) * (3/51) * (2/50)* (48/49) * (3/48) * 5C3 * 5C2 = 0.0144~ or (52/52) *...
  37. R

    Engineering Drawing: Pin/Bore Tolerances

    Homework Statement Homework Equations None The Attempt at a Solution a = 4.99mm b = 10.01mm So for 'a', to find the minimum possible nominal diameter for line-to-line interference, I assumed the diameter of the smaller bore to be 4.98mm. Also, there's a concentricity...
  38. P

    Drawing Bifurcation diagrams for a dynamical system

    1. Homework Statement [/b] Consider the dynamical system \frac{dx}{dt}=rx-\frac{x}{1+x} where r>0 Draw the bifurcation diagram for this system. Homework Equations The Attempt at a Solution Well fixed points occur at x=0,\frac{1}{r}-1 and x=0 is stable for 0<r<1 and unstable for...
  39. A

    Engineering Need explanation about the steps to drawing a NAND circuit

    Please, I need you to teach me how to write the equations from the Karnaugh map and then how to draw the NAND circuits. Here's the sample that I have but I don't understand :( I know the basic of writing SOP and POS from the Karnaugh map but that's all. I don't get how it is converted to get the...
  40. O

    Drawing the step response of a second order system

    Homework Statement I have to draw the step response of the following two systems. G1 = (4+3s)/(s^2+4s+4) G2 = 3/(s^2+4s+4) So I started to draw the step response of the second system first. It has to be in the funky standard form: \frac{ω2}{s2 + 2ζωs + ω2} EDIT: Seems like the above doesn't...
  41. S

    Conditional Probability and Drawing Cards

    Homework Statement A standard deck of 52 cards of 4 suits, each with 13 denominations, is well shuffled and dealt out to four players, N, S, E and W, who each receive 13 cards. If N and S have exactly ten cards of a specified suit between them, show that the probability that three remaining...
  42. W

    MHB Probability of Drawing 3 Hearts and 3 Diamonds from a 52-Card Deck

    1: 1 (26/52)* 2: 11 (12/51)** 12 (13/51)*** 3: 111 112 121 122 4: 1112 1121 1122 1211 1212 1221 1222 5: 11122...
  43. B

    MHB Probability of drawing mutiple marbles.

    Hi, first post here... Wasn't sure to put this in Basic Probability and Statistics or Advanced Probability and Statistics, figured I'd put it here in Advanced so it can get better help, if this belongs in Basic, mods feel free to move it.There are 60 Marbles in a bag. There are X red marbles, Y...
  44. P

    Help Drawing Psi - Get Assistance Now!

    I was doing my homework just now, writing a lot of \kappa's and all of a sudden I can't draw them anymore :frown:.
  45. K

    Basic tensors. Drawing and orienting.

    What is the rule for orienting tensors? In the above image we have the components of the Cauchy Stress Tensor in 2 dimensions. In the bottom left you see the cartesian co-ordinates are oriented as normal. How do I know \sigma_{xy} is oriented upwards on the right face and downwards on the...
  46. P

    What is the probability of drawing cards from a deck?

    It's been some time since I studied probability. So, forgive me if this seems like a very simple question to answer, but after trying to wrap my head around it for two days without any success, I'm confident that once I understand it, the rest will become very clear. Let me start with what I...
  47. D

    MHB Drawing tanx=1/x Graph with Tikz from 0 to 10pi

    How can I get Tikz to produce this, tanx = 1/x, graph from [0,10\pi]?
  48. W

    MHB Calculating Probability of Drawing a Blue Ball from an Urn

    An urn contaions 1 red ball, 1 green ball and 2 blue balls. An expriment consists of drawing 2 balls in succession from the urn subject to the following rules i) if the first ball drawn is green, then is is put into the urn before the second ball is drawn ii) if the first ball drawn is not...
  49. B

    Help drawing free body diagrams

    Homework Statement The picture attached is the problem. Also given is the constant acceleration of 2m/s^2, a frictional force of 75N, and the mass of block A is 25kg. Homework Equations The Attempt at a Solution I just need help with drawing the free diagram part involving the normal force...
  50. E

    Drawing 4, 5, 6, and 7 dimensional objects

    Hello everyone. I just created a YouTube video on how to draw 4, 5, 6, and 7 dimensional objects. Yes, contrary to popular opinion, this is possible. The four minute video is available at http://youtu.be/Q_B5GpsbSQw Please let me know what you think. I hope you like it. Thanks...
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