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. P

    Help With Drawing a Free Body Diagram

    Homework Statement A large box containing your new computer sits on the bed of your pickup truck. You are stopped at a red light. The light turns green and you stomp on the gas and the truck accelerates. To your horror, the box starts to slide toward the back of the truck. (Assume that the...
  2. cherylt

    Help Needed! Drawing a Half-Wave Sinusoid in Simulink

    Dear all, I am pretty bad at Simulink and I want to draw out a half wave sinusoid with the equation: I(t)=360sin(pi*t/0.4), 0<=t<=0.4 I(t)= 0 , 0.4<t<=1 Any help or suggestions? I've tried using the Sine block with amp=360 and freq=7.85 but the graph looks weird. I want to...
  3. C

    What animals have been drawn by this scientist?

    I like animals,my hobbie is drown animals. I used to draw portraits of dogs, cats, parrots ... here are some pictures of me. I draw and print up some http://marioboyshop.blogspot.com/search/label/T-shirt%20For%20Women looks very cute. Here are some pictures that I drew.
  4. I

    MHB Drawing Contour Maps: Level Curves of $f(x,y)=(y-2x)^2$

    draw a contour map of the function showing several level curves $f(x,y)=(y-2x)^2$ how do i do this. i know i have $k=(y-2x)^2$ but how do i use it?
  5. R

    Help With Drawing Triangles: Regular & Isosceles Triangles

    Hello, I would need some help with drawing these 3 triangles for my homework. Would be nice if you could just help me to start drawing (what to do first) the right way. Thanks. Homework Statement a) Regular triangle: b - a = 3cm c = 6cm γ = 120° b) Regular triangle: a + b + c = 16cm α = 75°...
  6. R

    MHB Drawing Triangles:Get Step-by-step Help Now!

    Hello, I would need some help with drawing these 3 triangles which are part of my homework. Would be nice if you could just help me to at least start drawing (what to do first) the right way. Thanks. 1) Regular triangle: b - a = 3cm c = 6cm γ = 120° 2) Regular triangle: a + b + c = 16cm...
  7. berkeman

    New free schematic drawing tool at Digikey

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  8. R

    Drawing a Lewis Dot Structure for Octathiocane (S8)

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  9. B

    Drawing Feynman Graphs for D→KK Meson - Need Help!

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  10. S

    Drawing a Triangle with Side a=4 cm, Altitude 3 cm, and Angle α=60°

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  11. ranju

    Drawing the DC Load Line: Exploring Saturation and Cutoff Points

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  12. I

    MHB Drawing Geometry Questions: Can You Help?

    can someone tell me if i drew these right. and also I am stuck on part (f). how do i draw that? i attached the original questions and my drawings. for part (a) and (e) i used the parallelogram law
  13. A

    MHB Drawing vectors according to the phase

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  14. kq6up

    LaTeX Free Drawing Program for Math & Physics Books

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  15. M

    Engineering Drawing Circuits: Correctly Drawing NAND and NOR Gates with 2 Inputs

    Hello. Can someone check if I drew the circuit for (a) correctly? By the way, I translated the question wrong, it doesn't actually mean 2 NAND gates or 2 NOR gates, it just means NAND gates with 2 inputs and NOR gates with 2 inputs. And how to do the second one?
  16. R

    MHB Probability of Drawing Same-Colored Balls from a Box

    A box contains 2 red, 4 white, and 4 green two balls are drawn in succession without replacement. What is the probability that both balls are the same color?
  17. X

    Drawing a labelled transition system (LTS)

    Homework Statement I want to draw an LTS with as few transitions as possible. The basis for this are Hennessy-Milner equationsHomework Equations https://www.dropbox.com/s/ym3ygjdnhldz09r/HML%20Equations.jpg Those are the equations and how p1 is defined. The Attempt at a Solution...
  18. vanceEE

    Drawing Surfaces & Space Curves

    Homework Statement Drawing surface ##f(x,y) = ...## or ##r(t) = <f(t),g(t)>## etc. The Attempt at a Solution I've been working on drawing space curves lately, by breaking into separate planes and by level curves. I'm struggling w/ this topic. (1) If I'm not mistaken, this is fundamental in...
  19. H

    Electric Field Direction & Drawing Electric Field Lines

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  20. vanceEE

    Strategies for drawing space curves?

    What are some helpful strategies for drawing and conceptualizing space curves? I'm having trouble drawing them and I'm not very artistic! Also, please provide helpful videos on this topic if you can. Thanks.
  21. N

    Drawing lines through spacetime warped by the mass of the earth

    Been reading laymen's books on general relativity and I'm in need some clarification! ... Line 1: The shortest path from a point 9.8 meters above the surface of the Earth to another point at the same location in space but 1 second later in time. Line 2: The shortest path from a point 9.8...
  22. Y

    MHB Drawing and finding the value of postfix expression

    I am ending with no operator in the end. So 1000 160 would be the answer or what. I do not know what to do from here. Please help!
  23. E

    What makes the GPU so much faster at drawing lines?

    First year learning programming here. I am trying to write a line drawing algorithm that would be, perhaps, faster than algorithms used today (that would be nice, if I would turn out to be smart and accomplish something nice) so I wrote this piece of code (currently it only draws lines where...
  24. S

    How to Draw a Force Diagram for an Object Suspended by Strings?

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  25. P

    Problem with drawing velocity vectors

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  26. L

    MHB Drawing Arrow Diagrams & Explaining Domain, Codomain & Range

    Hi Folks, Have a task , but no idea how to resolve. Will appreciate any help. Consider the function f: {5,6,7} →{A,B,C} given by f(5)=A, f(6)=C, and f(7)=B Draw its arrow diagram and state its domain, codomain and range. Is it (i) onto and (ii) one-to-one ? Explain. Does it have...
  27. I

    Advise on Drawing: Get Expert Opinion

    Please See the drawing and Advise...
  28. B

    Orthographic to isometric drawing

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  29. B

    Orthographic to isometric drawing

    Hi, So I've just recently transitioned from converting isometric drawings --> orthographic to orthographic --> isometric and I am having quite a bit of difficulty with the latter I have attached the question and my attempt at it (hardly anything because I am having trouble visualising how...
  30. S

    Free-Body Diagram for a Block Pushed Against a Wall

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  31. N

    Drawing a trajectory with multiple gravitational soures.

    Hi there guys. As the title implies I'm trying to draw a trajectory on the screen (yes, this is indeed about programing :P) involving multiple sources of gravity. Here is my dilemma: Since I'm working with an update loop there would be no problem to just simulate an object and having it...
  32. S

    Probability: What is the probability of drawing items from containers?

    Homework Statement There are 3 boxes containing some products of same type. Box 1 contains 10 products and 3 of them are flawed. Box 2 contains 15 products and 7 of them are flawed. Box 3 contains 25 products and 5 of them are flawed. Randomly choose one box from the 3 then draw...
  33. B

    Drawing v-s graph from a-s one

    Homework Statement The a-s graph given below belongs to a bus traveling along a straight road.Given that the velocity of the bus is 10 m/s when s=0, plot the v-s graph of the bus. Homework Equations ∫vdv=∫ads or 1/2(v2^2-v1^1)=(area under a-s curve. The Attempt at a Solution...
  34. A

    MHB What software can I use for 3D drawing and measurement?

    I want to know software to draw 3d figures with the ability to determine the angles and the lengths of the lines and to move them. I want to draw two triangles sharing a side and an ability to measure the distance between two vertices on them and to rotate them in the 3d space. thanks
  35. D

    LaTeX Drawing Circuits for LaTeX - Tool Recommendations

    I need to draw some circuits and importing them into latex. Any recommendations for a good tool?
  36. G

    How can I draw a basic differential equation in Simulink?

    Homework Statement Hi, I was wondering if someone could help me create a basic differential equation in Simulink. I'm trying to create the following equations http://imageshack.com/a/img197/1379/cic.PNG I tried using this as an example...
  37. L

    Drawing circles with different distance functions

    Homework Statement In ##\mathbb{R}^2##, draw a unit circle for taxicab distance ##(d_t)##, euclidean distance ##(d_e)##, and max distance ##(d_s)##. Homework Equations ##d_e = \sqrt{(x -x_1)-(y-y_1)}## ##d_s = \text{max}\{|x-x_1|,|y-y_1|\}## ##d_t=|x-x_1|+|y-y_1|## The Attempt at a...
  38. N

    Drawing cards in poker - why is my answer wrong?

    Homework Statement When drawing a poker hand (5 cards), what is the probability to get a single pair?The Attempt at a Solution This is my (wrong) line of thought: The first draw can be any card, so you have 52 options. For each of these cards you have 3 options to get a pair, so 52*3 in total...
  39. C

    Technical Drawing of Crank Mechanism

    Homework Statement Hey, I have to do my homework in Technical Drawing where we have to describe the function and the assembly of any part. I have got a crank mechanism and I just want to know if I name all the parts correctly. I am not quite sure if everything is correct. The Attempt at a...
  40. U

    Drawing constant property lines on p-v/T-s/u-s diagrams

    Hi All, I'm really curious to know how we can predict the shapes of constant property lines (isenthalpic/constant internal energy/isotherms/isentropes/isobars) on any given plot, such as T-s and P-v or even u-s diagrams. Is there a rule to do so? Usually in practice we deal with p-v and T-s...
  41. MalachiK

    Drawing a gravitational field inside a planet

    For a point mass acting as a source of a g field we draw lines that point inwards from infinity. Where we have an extended body like a planet, I've always drawn the field lines terminating on the surface. However, I've seen a question in an exam paper that implies that it's okay to continue...
  42. D

    Why Does the Order of Drawing Marbles Affect the Probability Calculation?

    Homework Statement Consider a jar with 3 black marbles and 1 red, for the experiment of drawing two with replacement. What is the probability of drawing a black then a red in that order? Assume all marbles are equally likely to be drawn. Homework Equations The Attempt at a...
  43. S

    How do i practise drawing this diagram.its very difficult

  44. J

    Second order differential equation - Drawing circuit

    Homework Statement "Solve differential equation y''+y=2*cos x. Draw circuit of the equation and think about the strange behavior of the current." The attempt at a solution I was able to solve the equation, but I have no idea how to draw circuit about it, we haven't gone through this...
  45. M

    Is there an algorithmic way of drawing phase portraits by hand?

    I have trouble understanding how to draw phase portraits. Is there a good pedagogical overview of their basics (such as elliptical vs hyperbolic orbits, separatrices etc.), along with an algorithmic way of how to draw them when it is not easy/possible to find v(x)? Basically something explaining...
  46. C

    Kmh. Vector Drawing Help: Homework Equations & Solutions

    Homework Statement A puppy runs 4km west, 2km south, and then 5km 30 degrees south of east. Determine the total distance he walked and his net displacement. If it took him 1.2 hours to complete the run, find his average speed and his average velocity. a) Draw all vectors with correct...
  47. W

    MHB Drawing the Venn Diagram for A ∩ Bc

    Draw the venn diagram for A∩Bc (A Intersection B Completement) Is my solution correct?
  48. T

    Spacetime diagram drawing problem

    I was drawing a spacetime diagram to relate Doppler shift effect but i stuck at a point which i can't understand This is what I'm trying to draw An object with mirror is moving away from me with a velocity of 50% speed of light When each second passes in my clock i send light pulses at that...
  49. U

    Engine Drawing: Orthographic views to Pictorial View

    We are currently working on normal surfaces in my Engineering drawing class. The book that is assigned to the students has very minimal instructions on how to understand or do the material. I have a problem sketching orthographic views into a pictorial view. I don't any problem looking at a...
  50. S

    MHB Drawing circuits with NAND gates

    A cheap way to implement this circuit is to use only NAND gates. Draw the circuit diagram for the lowest cost implementation using these gates. (reminder: you can wire a NAND gate such that it acts like an inverter). $f$(w,x,y,z) = x*y + w*x + \bar{y}*\bar{z} My solution: Will this work?
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