Engineering

Who can help me how i can measure acidity in soft drinks, juice via equipment? I do it by using alkali. But i need to know is there any equipment for it?

I am building a robot with multiple types of sensors, 2 motors for locomotion, 2 motors to control a robotic arm. I want to know how do i factor in all these components to determine a length of how long my battery will last. Lets say I was using a 7.2 V/1600 mAh, now how could I determine its length of life using the voltage and current of each component. I am using a variety of color,IR, tilt sensors and such. So could someone give me a good solution.

What would yield best efficiency in collecting moisture from fog ? The typical fabric used for such is the raschel, that one used for bagging potatoes, onions... How can the dimensions be optimized/engineered ? Larger holes allow more fog passing trough; smaller holes impede the fog flow but present more moisture capturing surface. There has to be an optimal ratio from thread/ opening. Probably depends on wind speed, humidity content. How would you chose the ratio ? Now, about material... Is a multifilament wick 'better' at capturing/transporting the collected moisture than a polyethilene thread ? Better could mean faster channeling, less evaporation, asep…

I've always had an idea at the back of my mind, for harvesting an untapped resource; Kinetic energy. Lately, I have had ideas on how to do it. Not ACTUAL ideas, since I'm in middle school, but more like an idea of the location of this resource, the Freeway. So, I searched up on devices that could harvest Kinetic energy, and I found this; http://www.perpetuum.com/tech.asp If possible, do you think this could be placed under roads and freeways? Please post opinions below.

anyway, a nuclear-powered pusher-plate craft would, by assumption, have a pusher-plate capable of absorbing high energy particle radiation. So, a pusher-plate craft could accelerate, then coast in an "end over" (stern first) orientation, using its pusher plate to "snow plow" the ISM. However, even to drive an aircraft-carrier-sized ship (100Ktons) to Mars and back ([math]\Delta v \approx 10 km/s[/math]) would require circa 100Gtons of nuclear warheads for fuel. i think that's about the entire global stockpile of nukes. So, all earth could spend trillions of dollars, to load a huge stockpile of fuel pellets aboard a craft, for one trip. (Moreover, 100Gtons probably ma…

I always wanted to build simple drawers and tiny supply elevators that could open and close, (rise and decend) at the push of a button. Now I have several practical uses for a circuit like that, but I'm still stumped on how to wire one. What I'd like to replicate is the drawer of a cd drive. Push a button, and the drawer extends and stops. Push THE SAME button, and it recedes back into its box. What is the name for this kind of circuit, and can someone post or direct me to a schematic. There's no need to cover the mechanics of the belts and pulleys, and I'm working with D.C. motors. Many, many thanks, Ernie

Hello guys, I've recently started learning about supercapacitors and their principles for an internship im doing right now and I had trouble understanding the seperator which is a porous membrane and its main function is to stop electronic conduction between the capacitor electrodes and prevent a short circuit but allow ionic conduction. So if it is ion permeable why does it stop electrons from passing through as they comparatively smaller than the electrolyte ions. Most of the commercial seperator membranes right now are made from cellulose derivatives or porous polypropylene. Does it have to do anything with the material properties of the membrane? or is it som…

Hi, another thing I need your help with about the hoverbikes in my show concept. I sometimes think I should make the bikes faster, but then it brings safety to issue because of the increased g-forces (assuming that's a possibility). The fastest I wanted to make them at one time was no more than 800 km/h. What should I do, design-wise, to make sure the riders are safer at such high speeds? Is there some other technology that would need to be acquired for this objective?

Hi! I'm starting robotics next year (sophomore year of high school) and I have no idea what to expect. I've never been good at assembling things and hands on activities so I'm very nervous. Can someone please tell me what I should expect or know? Thank you!

How does the industry drills a hole 0.1mm diameter on iron, brass, stainless ? Are drill bits the norm, or is there another way ? Say you want a hole as fine as a human hair...

Is it possible to install solar panels on rocket ships? so they can move through space without using gas but instead using the sun rays for charging.

Just kidding. My stepson got an electric scooter and I am trying to design a ramp to go up and down the stairs to the basement to store it overnight. I tried using just a 250cm long board but it slips on the stairs and I end up having to go and carry it up or down anyway. Any ideas on how to get it to stay the ramp/board to stay put while moving this thing up and down the stairs. I suck at Engineering obviously and any ideas would be greatly appreciated. Note: Because it is too heavy for the kid I had made it fairly long because It is easier to push it up the gradual slope then the actual height of the stairs (about 5 steps) without having to use the motor of the sco…

After talking to some people about Superconductivity...and how much of a pain it is to have to cool certain materials using Liquid this and that to extremely cold temps. just to get Superconductivity...I started to talk about a Holographic Circuit Board as well as using a method of EM broadcast to send such energy directly to where it was needed without needing such materials. Now there are a few things on the net about such types of Virtual Circuits. My question to the engineering crew here is...not if it possible but how long will it be before it is widely used? Split Infinity

This is a small experiment I would like to conduct. I was told if you can give a scientist a problem, they will always have an answer. No matter how unrealistic. I am here to ask all of you to ponder a practical and realistic way to get people off of the power grid. The ideas expressed should not have any selfish or greedy intent. I would like to think that as a community of knowledgeable people a solution can be found to help all of humanity. Anyways, I am not 100% sure how this experiment should work. All that I know is that it is an experiment that could have a historical impact on our world. Collective thought is an amazing thing. I assume a good starting pla…

Hello!! I am angineer in developing motor assemblies,now I had task in developing some new products to meets the needs of manufacturers. But I have never work in such a producer,so I had no Ideas for what they really need now. In the attachment are some of the product that want to combine together as a package.Will this package meet producer's need? éœçˆ¾IC.pdf

For my next project in physics, I would like to build a Levitron, similar to those spinning toys. I've seen many instructables on how to build these, but they almost always came out with next-to-no levitation, whereas a demonstration I saw recently had at least a full inch or two going, and was stable (the guy mentioned something about stabilizers on the edge of the device to knock the object back to center). Before I start this project, I need to know if the intended use is feasible, and thus have a few questions: -Is it possible to extend the reach of the magnetic field (i.e. to 5 inches or greater) without a significant loss of strength? -Is it possible to r…

In science fiction, we often see characters using lasers in place of bullets for their guns. However, even though "science fiction" generally shows us technology that doesn't exist yet, but may exist in the future, this is one type of technology that will always be in the realm of science fiction. Lasers do not have physical mass, so the closest they can come to doing any real damage in a military environment is either causing eye damage or skin burn... maybe even skin cancer. Even if you could get a laser up to such powerful levelst that it actually can blow something up, the mind-boggling amount of energy necessary would render it pointless; you could do the same dama…

Mechanical or Industrial Engineering

This is something I dreamed up and was wondering about the feasability of it, so assuming no one steals the idea (if it is even possible) then it could mean cheap & clean energy. I'm no chemist/bioligist/mathematical genious, however I think this could work although from research I have done into this system there are some problems to overcome. The premise is this: Trees can use capillary action to transport water (in the case of old red-woods they are known to transport up to 4 tonnes or 8,000 lbs from ground level PER DAY! sometimes hundreds of feet up.) (source) http://www.davidlnelson.md/Cazadero/Trees&CapillaryAction.htm So with this in mind,…

I read once how a device that produced mircowave radiation that was pulsed at elf . It was used to stop a dog from having siezures . The author of the article was an academic from a university in the US. He stated that his dog suffered from numerous siezures daily and after using the device the siezures ceased entirely . Could someone tell me how to make a similar device or point me in the right direction. Thank you

Hi, I need an advice with magnetic wheels. I'm very new to this discipline and a I don't know where to ask else. So, I have four magnetic wheels on moving platform. This platform will move in vertical direction. The surface will be metal and that's reason why I have magnetic wheels. When I want to move with the platform up I have to get over a gravity force and magnetic force that produce my wheels. I don't know how to count these magnetic force. It shouldn't have to be precisely calculation, because I will add some overdesign. It's enought to calculate it approximately. Could you please tell me how to do it or where to start (some webpages, books, etc.)? If I didn't…

I live in the UK in which their is much controversy surrounding wind turbines. They are often built in areas on natural beauty our out at sea where many people believe they damage the sealife environment. However why cant Bhaskara wheel be used to provide the turning motion instead of using wind. A bhaskara wheel can be used indoors or large units can be built in industrial areas inkeeping with the local surrounding area. Can anyone please advise why a Bhaskara Wheel cannot be used to generate electricty?

Hi guys, I am currently studying fluid mechanics. This is my first time doing the subject. I've been reading some books. Then I realised something: 1. Do we always have to use an annulus as a fluid element? What's so special about the ring? Was it because it's easier to analyse? 2. Regarding "head" (dimension L), is it easier to understand by expressing it in L? Thank you.

Hello, I am having difficulty in calculating F and was wondering if anyone could help. F is the heat flux in W/m2 between the Heat Pump-House system from the Atmosphere. Now I have the Energy 'lost' from the house walls into the atmosphere. If we don't consider any other parameters, this energy would be the same exact amount of energy that I need to add into the House to maintain a constant temperature. By looking at some of the Heat Pump specs and by knowing that the Coefficient of performance is 2.5 I should be able to calculate the energy heat has to transfer from the outside into the inside. The difference between the heat flux lost from the House into the atm…