Project Definition and 1000 Threads

I came across an article in American Journal of Physics recently that describes how to build an acoustic radar by transmitting a carrier modulated with pseudo-noise code through a speaker and simultaneously receiving the reflection with a directional microphone. One then does some signal...

I have been interested in the story of halo lately. I have trying to come up with a way to theoretically create a mechanism that kills all life via radiation in a 25,000 ly radius. (The function of a halo ring). This is what I have so far, using millions of lasers focusing on one point...

Hello All, I am working on a project to get a old phone (from the 50's) to ring. The problem that I have is ringer voltage is 80V @ 20-25 Hrtz. I am trying to come up with a really cheap way to achieve this. I was thinking of getting a variac to set the voltage at 80V but I would still need a...

Hi there - this is my first post and I hope one of many to come! My query is a relatively simple one; I'm working with an engineering cleaning application where fluid will be fed into a cylindrical block and spun out into a surrounding container. The block is 3.5m long and ∅0.140m...

Homework Statement We must build a self contained device which can pass through a standard doorway. It will start .5 metres from the egg cup with an egg in it this egg cup is then .5 metres from a cart that the egg has to pass through and continue going to a target on the other side of the...

Hope I got the right section. First time poster! Hello all! I'm pretty much a Noob so forgive any ignorance. I'm running 31 Orange (2.2v) (24 ma) LED's on a parallel circuit. My power supply is 12v from the DVD power supply of a Xbox 360. I bought a 10 watt 15Ω clay type resistor per a...

hey I'm a high school student which majors in science (physics) and to pass my grade i need to make an essay paper including the problem, experiments, and of course conclusion. But I can't make up my mind of what topic should I make. And one thing that gave me an idea is about car safety, does a...

Hi guys. We have recently got a design 'competition' where we build a vehicle that will propel itself 1.0 m forward and then fire a projectile in attempt to hit a target that is 2.0 m away, perpendicular to the direction of travel. The vehicle will be traveling on sand, and can only move by...

Hi I am a final year student at Salford university manchester. I need idea for my final year project. Can anyone help me out n this matter Regards Sal

Hi! I'm interested in building a particle accelerator... maybe a linear accelerator or a cyclotron. What do you suggest as a starting project? The linear accelerator or the cyclotron? About the linear accelerator, is it suitable only for electrons? Is it possible to build a small (and...

Hopefully this question hasn't been asked here before, I did a search and it seems everyone else is asking much more practical questions. Anyway...The Situation: I'm modifying a Nerf gun (this one for anyone who's curious)...

Hi, I'm not sure how you guys are going to respond to this request and i guess it may sound a little mental but here goes... I'm attempting to write some fiction which may sound like a pipe dream to most but i intend to try non the less, while i am confident in my ability to write I'm not...

Homework Statement i need to make sample calculations of momentum using the mass of a standard egg (.05kg) dropped from 1 2 and 3 meter heights. but i have no clue how to do this

Hi guys... be kind as I am a software engineer by trade and this is my first little side-project in EE. So I'm building a custom motorcycle from the ground-up and it is nearly complete. I decided for the brake light and various indicator lights, that I would control them using a pic...

So I'm in the first year of my Physics major, having just finished my first class. I'm looking for projects to do at home. I'm not too picky about whether it's an genuine experiment or just a fun project. I just want to do something with my hands that relates to what we're doing in class. I got...

Hi friends, I'm an outsider with a management science background looking for a solution into a technical matter I can't resolve by scouring the net. I am working on an academic project that will allow me to track multiple pressure or force points and have that information transmitted...

Hello All, I'm working on a project and one of the main parts is this pressure vessel that is sealed air tight that has 2 tubes coming out. One is straight and the other is a U tube. I have a 2.5 KW heater coil in the water to boil the water in order to create steam to raise pressure and move...

Well I don't know if this is the right place to do this question. I want to do a project of my class of electronics, and my circuit must contain at lest one intagreated circuit, can somebody give an easy one? It must contain just a integrated circuit and also something with LEDs. I am just a...

Homework Statement Hi guys. Recently, my physics' teacher told my class to make an experiment from any of the themes which are covered in the period. I need some ideas in which I can make something, somewhat good and not easy looking, but at the same time not very budget consuming...

Hey guys, I got an idea in my head to have a bit of fun with a project idea. I want to make one of those claw games that they use to pick up toys, or chocolate bars etc. However there are so many ways to do it. Ideally i would like to make a small c program and put it on a PIC and use that...

In school we have to make a theoretical circuit using a simulator, in our case its CircuitWizard2. For this project we need to think up a problem and then create a virtual circuit that solves this problem. Throughout we have to show our calculations, testing and development of ideas. We...

So I have a project that I'm contemplating undertaking. What I basically want is: A lot of the times I'm lying down on my bed and watching a show or something. Except I would rather my face be facing the ceiling than one of the walls, if that makes sense. So I'm trying to make a small device...

i don't know if i am in right part of forum. i want to build some sort of wind turbine for a school project. all the diy project are 6 or 9 coils with 8 or 12 magnets. the coils are on non magnetic board and the magnets on steel plate. why on steel, the steel plate increase the total...

So I only recently discovered Nikola Tesla and the unfinished project of Wardenclyffe - It's apparent purpose was not only to transfer electrical signals wirelessly, but also Tesla claimed it had the potential to supply limitless energy everywhere around the world? Is there any truth to...

HELP PLEASE! I have to create an object that will travel a straight, horizontal zipline of 7.4 meters, and then travel back .4 meters to the starting point.. The object has to be all mechanical (no electric power source) and can't weigh more than 2 kg. It also has to be pretty cheap ($50) to...

Hi all, Basically I need help working out how much energy we can potentially produce. We have a waterfall 50m high that has a constant year round flow. We would take off water into a 6" vertical steel pipe at the top and run it to the bottom into a turbine. I don't know the friction of the...

Hey. I will be in approx. 1 year from now do a big mathematics project, that is going to be coupled with physics. I have already covered all the obvious choices for this project, such as harmonic motion and dampened harmonic motion with the derivation of the general solutions to the differential...

Hi, I am trying to think of a really interesting physics topic to do a research & report project (basically an essay) on for my a level physics course work. I have got to come up with a title in the form of a question to write approx 2000 words on. I am finding it really difficult to think of...

My class has been assigned the egg drop project, and I need some help/info on how to go about it. Objective: to design a container which will protect a raw egg, when dropped. Apparatus: 1. Each container must meet the following specifications: a. Maximum mass- 20g...

Physics project, Grade 11, Help :) Hello everyone, I am new to this site so forgive me if anything I say is wrong or faulty. In my grade 11 physics class, we have been assingned a project, one that we choose what our focus will be. I have chosen to dive into the field of robotics and the first...

Hey guys thanks in advance for any help, I have a 3 phase 208 volt power source and I have something (heat wheel) that runs on 208 single phase. The heat wheel has ports labeled H (hot) N(neutral) G (gnd). I believe that if i take two legs of the 208 v 3ph, It should now be a single...

So I have this guy whom I asked help from for my science fair Project , he showed me something like this he had one meter like thing which he called micrometer(Sorry if I am acting dumb ). And there were two wires coming out of it one of which was attached to a Copper plate and other to...

My son is wanting to build a gravity fed water fountain that shoots 20 feet up in the air for his science fair project only problem is neither one of us knows where to start or what to use to build this. Was hoping someone would help...

I have an egg drop project, in which we make a container on the ground that can cushion the fall of the egg. The limits are: 8 cm height max, and 45 x 45 cm box max area and the egg must not break even if it bounces out after hitting the container. It'll be dropped first from a height of 2...

Hi all, I'm a student studying transportation design at university and I've been given a project where i need to design a lightweight family vehicle. We've been told to especially look deep into new materials that are lighter than the materials currently in use that don't compromise the safety...

So, I've been thinking about this for years as I've began studying Mechanical Engineering, but I never felt like I had the time or expertise to undertake the project: to make my own temperature controller at the heart of a fully functional and high quality espresso machine. It wasn't until this...

Alright, so I am building a hand crank generator, and my goal is to replicate the K-tor pocket socket. http://www.k-tor.com/ The goal is to power a universal powermat with the generator. I need to produce 10watts at 120volts, and my group is completely lost. If anyone could provide...

I am beginning a new project in which I plan on using the distance between my hands as a measurement. Being new to electrical engineering, I am not quite sure of what type of sensor to use to accomplish this. I would the sensor in one hand to only pick up the receiver in the other hand, not just...

Hello All, A friend and I took on a senior project design that is certainly proving to be more difficult than anticipated. Here are the details: Design Challenge: Self Balancing Motorcycle Description: A picture of our prototype is attached. The motorcycle is remote controlled with...

I have to design an egg drop experiment for a teaching project. I'll describe the project and how everything works, then the students have about half an hour to create a container to shelter the egg so that it doesn't break from a fall of about 20 feet. The sticking point is the time limit. I...

Homework Statement Determine the set of positive values of x that satisfy the following inequality: (1/x) - (1/(x-1)) > (1/(x-2)) a) (0, 1) union (2^1/2, 2) b) (0, 1/2) union (1, 2) c) (1/2, 1) union (2^1/2, 2(2^1/2)) d) (0, 2^1/2) union (3/2, 2) e) (1, 2^1/2) union (2, 2(2^1/2))...

Hello everybody I have a mass production project for a new product . The thing is to be made in foam , sheets...it is some material involved . To visualize the idea think about the Yoga mat sort of material but much thick.. Natural or Synthetic ?..provided there is to be found a natural...

I was referd to this forum from a friend and I have been reading some of them and I think you guys can help me and I would be very happy if you could. I was taking a electormagnitism physics class in school, calc based, and I had this idea for a project. I know that to calculate the magnetic...

Hey guys I am new to PF...m searching for new innovative ideas basically in production or renewable energy but m not able to get any...any suggestions??..

Hey everyone, I want to make a a simplified "segway" project. I plan on using a servo motor with a wheel attached and attaching a breadboard to act as a inverted pendulum. My idea is to use LabVIEW to generate the PWM for the servo and (instead of using LabVIEW PID) use active filters to act...

Hi, I am making up a Velocity Counter using a photo diode. I have planned it to be in the following way: I will be having two ends, on both of those ends I will be having photo diodes on one side and laser lights falling on the diodes from exactly opposite sides. Now I will make a toy car...

ok I am doing a project where i shoot a baseball from an air cannon. i am trying to solve for the muzzle velocity of what i should get at certain pressures. also i used the cross sectional area of the baseball, is that what i should use? when i solved for the force i used the force acting on the...

Hi everyone, I am new to this forum. I am a high school student but I am extremely interested in science and I like to call myself a "junior physicist". even though I am not nearly as smart as a real one. But I suppose I am working my way up there. I am hoping to go to college and get a degree...

Hello all...I have a led project I have been doing in my vehicle...I have a Bose/Clarion radio that has blown incandescent bulbs. I have already done the instrument cluster & climate control with drop-in led's so I decided to try & fix the radio. My problem is that the radio has soldered in...

Homework Statement Hi all, So I am in an intro to design and ethics class and we are creating a theoretical design project. Basically just going through the 10 steps, but actually coming up with ideas, doing research, and conceptually creating some alternative solutions (the project...