Drawing Definition and 559 Threads

Hey could anyone please explain how you go about drawing a reciprocal lattice? For example a 2d rectangular lattice to it's reciprocal form? Also... I don't know if this is correct but if you have a 2d rectangular lattice with lattice vectors L=n1a1 + n2a2 would the reciprocal lattice vectors...

The motivation for this thread comes from physics, but I'm posting it in the maths section as the question is more of a mathematical one and less concerned with the underlying physics. In cosmology, they often talk about closed universes with positive curvature, or non-Euclidean elliptic...

I need to rearrange this equation to solve for b but I can not get it worked out to where my units end up being correct. (a-b)=(F*b)/(A*E)

I am doing my thesis now and I will write it in Latex. But I need some kind of program to draw figures on communication symbols such as antennas, ADC converters, block diagrams with addition/subtraction/multiplication. Probably this can be done in Latex, if so i would need some guidance on...

Homework Statement I am trying to make a model of the attached drawing but am having trouble visualising the middle part of the drawings. I was wondering if someone could describe it to me Homework Equations - The Attempt at a Solution I think it involves two of something like this...

How to draw the graph from the picture. I solved 50% my self like grade Xcut-off point but I do not understand the graph below

Hi, is there any software that I can use for drawing a crystal structure from atoms coordinates ?

I'm drawing various fancy cubes. I'm using Octave, which is fine for generating the data but not so great on drawing cubes. (In case you're curious, I'm drawing projections of hypercubes.) Any help?

Hi all I'm looking for gasoline engine drawing with a displacement of 3.5-4 liters. Any suggestions where I could find one? Oleg

Hey, all. I'm wanting to type up a few ways to solve a neat Kleppner & Kolenkow problem, and I'd like to put a diagram I've drawn in. Here is what I'd like to insert...

One question is, I need a rod that both has grooved bearing tightly fit and a linear bearing on the same rod with no slop. Is this possible? What is a "press fit" tolerance? If I have a 0.5 hole, what size rod will be press fit? What size will locate without pressing? Boy I wish I had an...

I'm trying to draw Feynman diagrams with the feynarts.sty package for LaTex. The problem is that if I write the following code \begin{feynartspicture}(150,150)(1,1) \FADiagram{} \FAProp(0.,10.)(6.,10.)(0.,){/Straight}{0} \FALabel(3.,9.18)[t]{$1$}...

I'm suppose to draw a v-t and a-t graph from a given x-t graph. Here is the x-t graph and my attemps on the other two graphs from the x-t one. Howeverr 1. My teacher said that these graphs are discontinuous? Because I often see in littetaure that they drag "a vertical line" whenever...

I'm confused about "R34 2 PL" means. I'm guessing the radius of the round is 2mm and the curve is a quarter of an ellipse like so: Am I right?

I have an electrical drawing which specifies a wired connection as 3# 10+ 3# 12v- Teck symmetrical. What do all these numbers mean?

Homework Statement A box contains three cards. One card is red on both sides, one card is green on both sides, and one card is red on one side and green on the other. One card is selected from the box at random, and the color on one side is observed. If this side is green, what is the...

Homework Statement In a 52 card deck, if you draw 5 cards find the probability of drawing exactly one ace. Homework Equations (n k) = n!/k!(n-k)! P(A) = |A|/|S| The Attempt at a Solution So I took the logic of a different example we had that stated it like this - If we have 5 options but...

Hi, I was wondering if there is code already available to draw group lattice diagrams if I already know what the subgroup structure of the group and its subgroups are. For example, it's easy to determine the subgroup lattice for cyclic groups simply using divisors via Lagrange's Theorem...

Hi, I'm working on a project to illustrate the isometries of a tetrahedron and would like to be able to add a curved arrow around the black axis of rotation in the Manipulate display to indicate which way the solid is rotating depending if the angle is negative or positive. Here's a display of...

I'd like of draw any curve using combination of line circle, elipse, parabola, hyperbola and straight. Of course several curves can't be designed with 100% of precision using just conic curves, but, can to be approximated. Acttualy, I don't want to reproduce a curve already designed but yes...

Hi all It's a well known fact that the moon is drawing away from Earth by 3.82 ± 0.07 cm/year. I was googling a lot to find the exact distance between Earth - moon that this data was measured. A plain number or a link will be much appreciated. Thanks in advance Elistein

OK, ever since I was young I was well aware of my inability to draw. I had a friend who really could draw, and he did it so effortlessly. When I tried to draw, I had to erase erase and erase! I am asking this because I am a math major, and I would like to know if drawing is a talent that...

Homework Statement When a force of 2 lb is applied to the handles of the brad squeezer, it pulls in the smooth rod AB. Determine the force P exerted on each of the smooth brads at C and D Homework Equations ##\sum F_x=0## ##\sum M=0## ##\sum F_y=0## The Attempt at a Solution I drew a free...

Could you help me please With which function can we draw elliptic abacus in Statistic? I want to draw this function with pgfplots, tikz thank you

Hi, I'm looking for a great software for drawing illustrations in physics (Graphs, geometry, box drawings, integral and area 2d Graphs) and perhaps some trigonometry (triangles, Graphs, unit circles with angles/degree). I'm on a windows computer and the purpose is for making textbooks and ebooks?

Homework Statement A zeeman experience is made in the transition 3s4s ## ^3S_1## -> 3s3p ##^3P_2## in Magnesium with a magnetic field of 2Teslas (20 000 Gauss). With no magnetic field the emission occurs in 518.360nm. a) Draw the spectrum of what you hoped you observe when you're watching the...

The equation. Q(x, y,z) = -5/2:X2 - y2 + 4z2 + 7xy - 2xz - 2yz. Find its axis and draw its intersection with the plane x + y + z = 0 .

How can draw stream line?

Hi, can anyone please guide me how to draw the distribution curves for radial wave function of an orbital? Please explain stepwise and in easy way. Thanks.

What is the difference between the drawing of the Eccentric Anomaly and the Mean Anomaly. http://www.philosophaie.com/EA.png One has a circle radius "a" inscribed an ellipse with a focus "F". The True Anomaly makes "f" makes an angle to point "P" then a perpendicular is drawn to a point on...

Homework Statement . Can anybody help me to draw a T-s diagram Homework EquationsThe Attempt at a Solution Ive found out all the temperatures and entropy's but the videos I have watched don't help [/B] [/B]

Homework Statement We are in a planet where the gravitational acceleration is 1 ms-2. Tankers fly over the surface of a liquid ammonia lake (at 239K) at a height of 40m. A special, insulated, frictionless tube is lowered into the ammonia 1m below the surface. We want to draw up ammonia through...

Homework Statement [Picture of Problem](http://i.imgur.com/7q4yj8O.png) Homework Equations [/B] * It is dealing with drawing the DC model of a circuit * Now i know when drawing a DC Model, all capacitors are open (or ground) and AC sources are grounded as well. * In this specific problem, i...

Hello, I urgently need to be able to draw a set of bevel gears for 3d printing. The gears I am currently drawing intersect that is their teeth are penetrating each other when the gear turns. Currently using http://www.daycounter.com/Calculators/Bevel-Gear-Calculator.phtml to find the numbers...

In a game of Open Face Chinese poker, I encounter this problem quite often. One draws three cards at a time and one of these cards must be discarded, so two of three drawn cards can be used. A typical problem and question in this game would be: What is the probability of drawing one spade AND...

Homework Statement The problem involves drawing a particular set of lines and analysing anything of interest. The steps are as follows: : Begin with a hexagon with standard notation. : Draw a line (T) that passes through point B and which is parallel to AC. : Produce the lines AD and EC...

< Mentor Note -- thread moved to HH from the technical physics forums, so no HH Template is shown. Also, thread title edited to make it more descriptive. > The question is asking me to draw a diagram to show how, in the laboratory you would use two rectangular blocks of wood and a metre rule...

Since LaTeX is very powerful, I'm curious whether its possible to do things like the below samples in it. Is it? Thanks

I am absolutely clueless when it comes to drawing free body diagrams. I think I understand the concepts but as soon as I see an unfamiliar system I have no idea what goes where. Are there any resourcess that provide a large number of practice problems (with solutions) for drawing free body...

Hello! (Wave) Assume that at the nodes of a 2-3 tree, the following keys are saved (in an increasing order): $3,6,9,15,18,21,24, 27, 30, 33, 36$. It is also given that the root is a 2-node that contains the number $12$.Draw the tree. PS: It is not required to make so many insertions as the...

Homework Statement At a construction site, a small crane is raising two boxes of nails on a plank to the roof. One box has already been opened and is half full, while the other box is new. The boxes, including the nails, weigh 10kg and 20kg, respectively, and are both the same size. If the...

Homework Statement The attached graph shows the relationship between time and voltage for three resistors. A capacitor is discharging current through three "separate" resistors. How resistors might be positioned in a circuit to give rise to the graphs.Homework Equations V = IR CR = $$\uptau$$...

0. Introduction This is not actually homework. This is from real-life work in life science. I have tried to break it down into basic maths, though it will require an extension once I figure out the basics. The following part here will serve as an introduction to the subject. Feel free to skip...

Hi all, I'm currently working on a 3D game and am in the city development phase (its done procedurally). The issue is is that once I get to 22 000 buildings (80 000-100 000 models roughly) it causes a drop to 5fps(frames per second) (even with collision detection off). I'm using instancing to...

Hello, Trying to set up some production checks and encountered a symbol I have never seen before. I googled machine stock symbols and found something along the lines of what I need to know but could not figure out what the 3.0 besides the squiggly line means. I have attached a PDF with the...

Homework Statement Ok guys, its been a while since I have done this one so I don't even know where to begin. Here is the problem I have to complete: The power (in watts) from an engine is represented by the equation below, where t is the time in seconds. P = 30t^2.2 + 3t 1) Draw a table...

Hi! (Smile) I am looking at the following exercise: It is given a binary tree with 8 nodes and keys 2,4,6,8,10,12,14,16.The in-order tree traversal gives this order: 2,4,6,8,10,12,14,16. The pre-order traversal gives the order: 10,8,2,6,4,16,14,12. Draw the tree. Explain how you drawed it...

Hello! (Wave) I want to draw trees, that traverse "MATHHELPBOARDS" in: pre-order in-order post-order That's what I have tried: pre-order in-order post-order Could you tell me if it is right or if I have done something wrong? (Thinking)

Hi all, Are there any good softwares for drawings schematics like this? I need to make and insert such images in my thesis report.

Homework Statement This was a lab. I started with Maleic Acid. We performed a temporary corbonication to see whether or not the single bond would rotate to create fumeric acid, maleic acid or both. The question that I have to answer that I cannot answer is: Explain the mechanism of the...