Building Definition and 919 Threads

Suppose we have four games and the probability that a player will win the game are as follows: Game 1: 71% Game 2: 55% Game 3: 58% Game 4: 16% Suppose player b won these games with the following percentages of time: Game 1: 100% Game 2: 96% Game 3: 87% Game 4: 67% In other words, he's a very...

I am attempting to build a calculator that will calculate the tilt of a different shapes of packages traveling along a conveyor. the variables I am most interested in considering are: length, width and height of the package; speed of conveyor; radius and degree of turns. Can anyone provide me...

A client asked me to look into designing a vacuum chamber for drying out lumber. I am a decent fabricator but sadly not so great at the physics side of things. I know the chamber I'm building will need pretty thick material and a lot of reinforcement. He wants it to be roughly 10'x3'x3' inside...

Hiya Hiya. I'm trying to build a solar system simulator for research purposes, and this does not seem to be all that easy. As in, my firsts tests have the moon shooting out of the solar system... I was wondering if you folks could offer some guidance. So, since it's for research, accuracy is...

i tried to build an induction coil. the input voltage is 12.1 volts. the output voltage is 16.5 millivolts maximum. so the voltage in the primary coil is 12.1 volts. the voltage in the secondary coil is 16.5 millivolts maximum. the induction coil consist of a nail. thicker coils form the...

Would there be any fundamental reasoning (i.e. excluding cost, energy, and resources) that we could not build a modern day CPU using Si JFETs rather than Si CMOS? I realize the JFET device size would be huge, and the absences of enhancement mode JFETs may impact power consumption, but would...

Hi I live in the Santa Clara bay area in the Silicon Valley, I want to see anyone here that are living close by that are into high end audiophile stuffs particular designing and building audio electronics. It's hard to find anyone that is into this, it would be nice to find people to share this...

Summary: Is this schematics accurate so far? What type of connectors and antennas should I use for this to work? From following this project (PiTxSDR) and after watching this presentation (the RadioInstigator which builds on the previous project), I was interested in building a...

I am not sure if I am in the right place... I am, I guess for all intent and propose, a "dream" guy. I come up with something and cannot get it out of my head until I have explored all the possibilities. About 7 years ago, I came up with a thought about a "flying vehicle", Prop driven without...

Summary: calculation a projection lens system for a pattern projector Summary: calculation a projection lens system for a pattern projector Hello, I want to build a small pattern projector. This projector should project a pattern on a wall, which is 200mm away from the projector. The size...

Thinking of building a vibrating compactor to compact dirt and gravel for a new driveway section. I already have a horizontal shaft 13 horse honsa engine. I have some scrap steel. My question is concerning the exiter/vibrator. I was thinking of mounting 2 pillow block bearings with a pipe. A...

I built a phase shift oscillator, but it Won't work. I visit the website https://www.google.com/url?sa=t&source=web&rct=j&url=https://en.m.wikipedia.org/wiki/Phase-shift_oscillator&ved=2ahUKEwiV4Y-26OHiAhUClawKHQhACO8QFjANegQIChAG&usg=AOvVaw0YoHKumGz0Xl3fYKtIRdFa and copied the schematic I saw...

I just finish course on electric circuits and soild state Devices I want to start learning to apply what I studied I want to build electrionic circuits by my hand Can you suggest books or courses to teach these things??

I am going to construct a house in coastal Ecuador and will be asking questions related to building infrastructure to support it. It will be a built on a 30% slope and I am seeking information related to construction materials.

Aloha guys, just looking for advice on some of the better pathways, courses etc. to learn how to develop and build my own website for business purposes. Any suggestions or advice would be appreciated. Thanks

Okay I have two questions that I plan to post separately. The first question is simple: what elements will be needed to further space travel in the future? Does anyone care to comment on what base elements would be necessary to build the starship Enterprise? I should explain the reason why I'm...

So, I have no education in this field. I've really been into mutant breeding and crisper plasmid based genetic engineering. I've read that heavy ions create a greater number of mutagens than electron magnetic radiation such as deep uvc. lately particle accelerators have been on my mind. I'm...

I got a battery management board. According to the specs the charging Voltage is 12.6 to 13 volts. What if it Is a little more say 13.7 volts. Will it Still recharge the 18650 lithium ion Cells at 13.7 volts.

I’ve got a laser that I want to use to measure a straight line (preferably within about a millimeter) over about 2000 ft. My first thought was to focus my laser better and bring up a card until it cut the beam completely, but focusing down to a millimeter point so far away feels pretty...

I'm not sure I'm posting in the right category or even on the right forum but I need some guidance on building a simple signaling device. I want to make or buy a device that when installed on a piece of rental equipment a person can push a button and it sends a signal back to my office and...

Many cities, such as Rome and Mexico City, have been built over older, preexisting cities. From what I've read however, this tends to happen in stages, especially after disasters like fires or earthquakes. I'm wondering if it would be theoretically possible to build a completely new city over a...

Homework Statement You arrange your climate control system so that as it pumps heat out of the cabaret air and thereby chills and dries that air. Part of the heat your system removes from the cabaret air goes to the outdoor air and part goes back to the cabaret air. It turns out that delivering...

Are there any books or a sequence of books I could study to build up a picture of what I can know for sure and why I can know it? I suppose that's what some people do when they study a subject and move from the basic principles to further stuff. So like, has anybody started with the smallest...

I am in a high school physics class and have been recently assigned a mouse trap. We were given a mouse trap, that is all, and sent out on our own to create one. The requirements for this specific mousetrap car are to go forward 3 meters, then backwards 2 meters, and finally forward three meters...

Homework Statement A ball is dropped from the top of a building and falls vertically downwards. Air resistance can be neglected. After falling a distance d, the speed of the ball is v. Determine the speed of the ball (in terms of v) when it has fallen a distance of 2d. Homework EquationsThe...

The official NIST report on the collapse of building 7 on 9/11 states that the thermal expansion of a floor beam due to the fires disrupted a support column on the thirteenth floor, and that is what ultimately caused the building to collapse. Is this the sole cause or could there have been other...

Homework Statement A ball is thrown off of a building in the +x direction at 10m/s. If the ball takes 2s to land, how tall is the building? Homework Equations Vf=Vi(a)(t) Δd=Vi(t)+1/2(a)(t) Vf^2=Vi^2+2(a)(Δd) Δd=1/2(Vf-Vi)(t) The Attempt at a Solution Vf: 0m/s Vi: 10m/s a: -9.8m/s^2 t: 2s...

Hi, everything oko_O i just want to tell, can somebody, who have time just to read this file, you understand direct, if you know about fm detection, i just don't know how to make a transformer in ltspice, can somebody told how to make it this circuit with transformer and tuned please

Homework Statement [/B] I want to build a power bank capable of holding 10,000 joules of energy, is portable (can fit in a palm and is lighter than 1kg) and safe (does not short circuit, break down or catch fire easily) I cannot use batteries, only super capacitors What are some problems that...

Hello, i build the radio like they say in the book, and i did everything with VOM(testing with only multimeter), everything was like in book , but when i finish, i switch to am or fm, i just hear high noise :doh:

A few years back when I was quite young I stumbled upon this.I'm asking whether this is plausible. I'm guessing it isn't, since the chair hasn't absorbed any of the falling force, and you are still traveling at the same speed of descent, just wanted to discuss.

I've been reading about self teaching physics (mainly because the college curriculum is too slow to get me to any meaningful level of understanding at the end of four years), and an issue was brought up about lack of intuition in quantum mechanics/GR, and depending too much on the math. I was...

Howdy folks, I took a course way back in undergrad on the fundamentals of energy sustainability, so I have a good preconception how how hydropower works in general, but not in detail. So when my little sister (grade 7) came to me asking for help on a hydroelectric dam project, then I thought it...

Homework Statement I've got the following Circuit: And I have to make it in Spice. 2. The attempt at a solution So far I've got: Circuit Of Ex1 *Circuit Topology V1 1 0 dc 10 R1 1 2 4.7k R2 2 0 4.7k V2 2 0 ac 5 *Types Of Analysis .dc lin 500 100 10k *Output Statements .probe *Termination...

Hi everyone, I am new and I hope I'm putting this in the right section. I am currently a Sophomore in High school and I am building a wind tunnel. It's not for a class but rather its is like an independent study. I have been into planes pretty much all my life and I am hoping to get a pilots...

Homework Statement 1.[/B] two balls are thrown vertically from two points on a building. at the bottom of the building ball 1 is thrown and from the roof ball 2 is thrown. ball one reaches its maximum height after three seconds and ball two after one second. after two seconds the balls cross...

Hello everyone, I was wondering what degree/s do the people that build all the robotic exploration vehicles have. I have a bachelor's in physics and a bachelor's in material engineering from a university outside the US. I have now moved to the US and I would like to continue my education, I was...

Would it be possible to build a small 20' X 20' or 30' X 30' building using car tires using maybe one layer tires then black plastic to keep rain out then another layer of tires? If you just stack them vertical for the wall how would you build roof? Stacking them like great pyramids would look...

Hi everyone, I'm currently trying to build a solar cooker which can also be used during the night / the next day so I was wondering if I can get some advice about how it can be done, especially the material that I can use to store the heat. I saw an article that said a professor from MIT had...

... In this 19 sec. video, a guy climbs up a building by jumping against two opposing walls. I don't see how that could be possible. Some shoe-soles materials stick very well on smooth-shiny surfaces, true!, and the guy's mass has a side-to-side motion and less time to fall down... But I still...

Lucien Hardy's Quantum Theory From Five Reasonable Axioms has deepened my understanding of QP foundations, and motivated me to write a paper. The essence of my paper is that "connectedness" of state space (or the acting Lie group), need not be assumed, but can be deduced. Before linking to the...

Hello. I have been interested in radios lately and wanted to make one by myself. I know that it requires a lot of knowledge in physics and electronics, but what basics do I need to know? Frequency, antennas, voltages... Could there be any legal issues? I live in Australia. I am only a high...

The code below is the the main thesis style, know as muthesis.sty; It is a style to allow Title, Signatures, Dedication, Table of Contents, Main Matter (Chapter and Sections), Biblio., and approval letter. Edit it to your liking; just make sure all the files are containted within the same...

To anyone who has experience with the building material "staff" ( https://en.wikipedia.org/wiki/Staff_%28building_material%29 ): Can it actually be bent? How would staff differ from a modern fiber reinforced plaster?

Hi everybody, new to the forums :) I have a personal dream to build a drone/quadcopter from scratch. I'm aware it's not an easy task, and I've also searched this forum (and Google) for similar threads before posting: Drone Building Building a Quadcopter (links to what seems like a useful PDF)...

I'm building a model wind turbine. I'm using thttps://www.vernier.com/products/kidwind/wind-energy/kw-wth3/ as the hub/the base. That's the only kit I'm allowed to use. I'm supposed to decide on the blade size, etc. THE RULES: . Students will will sign up for a time slot and test their own...

Is there a cheap and easy way to calculate horsepower and/or torque for an engine out of a car? I am restoring a 68 mustang and would like to run an engine on a break in stand I will build. It would be nice to be able to use it to tune the engine. I read somewhere something about placing a...

Say you were building a full-wave rectifier. How many simple ways (if any) are there to reduce the THD on the source caused by using a full-bridge rectifier load? Also, If you used a low pass filter and then an isolation TX (or the other way around?), how much would that help to this end (if at...

I am probably not as smart as most of you. However, I like to think what I lack in skill I make up for in will... I would like to be able to balance my own wheels at home. My family has 4 cars plus 1 additional "project car". I also live in the middle of nowhere near an amish community. I would...

Lately, I've wanted to build a compact source of synchrotron radiation that is accessible to researchers with size and budget constraints. So far, I've managed to outline designs of the superconducting dipole magnets that will be used to keep electrons moving in a ring path within the booster...