Engineering

Hi, I am trying to estimate the flow rate of a closed loop hydraulic system. I know the pump speed, static pressure and pump pressure/flow curve in set rpm. I assume that the liquid is water. Is this valid method to estimate the flow rate? If i can measure the pressure in the pipe with pressure gauge i would convert that to head and compare it to the pump head/flow curve? For example: Pressure in pipe(measured with pressure gauge):3 bar converts to 30,6 m of head. total head would be 30,6m ? Now if i read the flow rate from pump curve i should get some kind of estimate of the flow rate?

Hi , The Journals which were mentioned in the past occasions are implied I am adding a sample of my hand drawing(s) ,but this is not professional ,this is a version of low quality and simple. Regards blue

in pure mathematics we commonly use >3D spaces. there will be many many types which are formulated. but I do not know whether we use any of them as an actual usage in life of science. I see at this document https://en.wikipedia.org/wiki/Hilbert_space hilbert spaces are being used at physics discipline and/or electric electronic engineering. I request anyone to provide any sample of direct usage of >3D space(s) as evidence if there exists or how its usage is. (note only formulizations are not acceptable, usage is required.)

I have been pondering the idea of trying to create a hydrogen gas combustion engine for a while. Using electrolysis to split hydrogen and oxygen to use water to fuel the engine. However, I do not have the automotive back ground or lots of experience as I am still a undergraduate. Creating stacked water and purification, the pressure and seals needed to inject the gas into the engine as well as other process I have looked into but have no way to test. If anyone has any details to add so I can add to my notes or help test. It would be amazing. Thank you for reading

So the last 3 years I've had this really intricate design of a "waste-to-energy" generator set up that hasn't been done before. It's still a theoretical idea, so it's not a "proven" and "efficient" machine. I'm lost on where to go with my next step: 1.) Should I try and build a small model, and see if it works? If it does work, then what? 2.) Should I pitch it to "someone" in the energy business? A guy with alot of capital? An old professor friend? 3.) Should I write a whole thesis on it? Then present it? Would I be taken seriously? I'm very lost on the whole process, especially on a project as big as a WTE generator. If you really believe its far too big …

What permits the max power generation of a dc motor? Is it the max rpm's it can have? The length of copper wire in the motor? The strength of the magnet? ~EE

Dear all, I have an amusing experiment with my smart phone charger. That is, after charging it fully, I connect its input and output toghether, and get surprise result. Could you see in my youtube clip and give your explanation here url deleted Thanks Thinh Nghiem

How can i hack light bulbs so i can make the lights flicker? I want someone i have under surveillance to know how closely i'm watching them, e.g, when they're reading a book and they come to a sentence that could allude to some episode of their life, icould flicker the lights so they know i'm reading the book along with them. Or those elctric heaters that click as they change temperature, how do ihack the electricity supply to one of those? i would i have to rig the room specially?

Hi I would apply for a conference to present my project (but I will be presenter). and request from someones who have experiences for presentation of conference. 1) may I apply by Journals ? (I saw nature and Science AAAS have conferences ,but I did not survey information yet.) 2) if so, What options do journals provide? (for instance ,do journals provide us waiving costs such as tickets of journey , accomodation, visa expenses and process . 3) will that association who I would give conference by its suopport ,want me to provide a determined TOEFL score? if so ,how amount of score is being asked generally? or what other options about this? 4) this will be present…

I'm looking for a lubricant for my bike chain that will dry out but can resist rain for longer than the ones usually available for bikes. Wet bike chain lubes that do resist rain attract dust in dry weather and soon get clogged up and dirty to handle. Normal chain oils are just a nightmare for attracting dirt in any conditions; specialist bike chain wet lubes aren't quite as wet as normal oils. I'm just wondering if anyone knows of a lube, maybe used in some other discipline, that may meet my requirements. For clarity: A 'wet' lube is for wet weather because it resists rain. It is slightly sticky, but not wet itself. A 'dry' lube is for dry weather and is not sti…

So, I dunno, I just want a device where I can broadcast my own signal all day, from my laptop, like data signal, what device am I looking for?

I am trying to etch silicon on HF based electrolyte, I am using Gamry reference 3000, The script I am running is PWR-800 Galvanostatic-Stack cell. My connection seems fine, I am connecting greem-blue lead on one side and red-orange lead on the other side, black and white are connected to each other. It is showing CA overload , what should be done to make it run normal. Earlier I was using Chronopotentiometry script and was connecting blue-green lead on one side and red-black on the other side. It was showing voltage and CA overload, to get rid of voltage overload I started using stack cell type in PWR 800 script.

hi dear scientists ; I would take patent(s) from this country's institute(s) if(/how) it is possible (/is). I request from the scientists whoes had (already) taken patent or who have been trying this to tell us steps ,requirements (not general requitrements implied ,general requirements have already been explained on their websites ) I can simply mean ; people who live the real events know more clearly everything related incident that he/she lived. therefore ,although the basic requirements have alredy been explained ,there would be probably existed else and different/(containinin some particular) information relevant to those researchers e-mails' contacting…

Perhaps I'm not understanding the correct concept of geothermal energy, so this suggestion may be a bit ignorant..but: Geothermal energy is essentially using heat from the earth (i.e. hot magma) to heat water, which spins a turbine.. blah blah..you know. Is this strictly done only at existing geysers? Because I was thinking, though it is expensive, wouldn't it still be cost effective in the long run just to dig say 500-1000ft into the earth where it's hot e enough to massive pipes to heat water? Once you dig the hole, and it's paid off, that's basically a never ending heat source, compared to nuclear energy or fossil fuels. We'vemanaged to build a ton of …

I forget how are they named... optical something... Is there vendors that you know of, for 'benchtop' size? They work by shining a laser onto some fluid that solidifies when hit by its ultraviolet light. Sort of a loca glue curing layer by layer to form a solid.

You cannot tell me the pyramids were built with ropes and logs, nope not buying it! As impressive as the great pyramid is, there are other ancient structures just as unexplainable: https://en.wikipedia.org/wiki/Pumapunku https://en.wikipedia.org/wiki/Unfinished_obelisk https://en.wikipedia.org/wiki/Baalbek https://en.wikipedia.org/wiki/Karnak Honestly the list goes on endlessly, our best guesses being unbelievably primitive techniques that are woefully insufficient in explaining how or why these sites/structures were built. LET ME GET OUT OF THE WAY I AM NOT A ANCIENT ALIEN NUT. I simply believe that there is far more to our history than what the record books show, an…

I have calibrated and determined the various volume parameters like Manifold volume, Sample cell volume and void volume. I have also interfaced a pressure transducer and the various valve controls. I'm using nitrogen gas as my adsorbate and BCR 171 Alumina sample as my adsorbent. I'm finding it difficult to incorporate the real gas coefficient in my calculations to analyze the behavior of the adsorbate in the region where the sample cell is immersed in the liquid nitrogen bath. As a result I'm not able to obtain the desired isotherm curve for my sample. An example consisting of step-wise calculations would be really helpful. I am willing to share the various volume and pr…

I think they are called 'glands' when on a flat surface. What is a proper tool to machine the 'nesting' for o-rings on bronze ? Would hole saws like these work : ? ----> http://g02.a.alicdn.com/kf/HTB1GC9kIVXXXXX5aXXXq6xXFXXX1/6MM-8MM-10MM-12MM-15MM-16MM-18MM-20MM-22MM-30MM-Diamond-Coated-Tool-Drill-Bits-Hole.jpg ----> http://img0.ph.126.net/YOwISOkx75ndkvzu3D3Dnw==/6619241418630639771.jpg Or something else ?

I was thinking and got the following ideia. Imagine 2 planets and an asteroid. Both A and B have the same speeds and orbit around their suns. To make things more interesting there are 2 ways B can spin clockwise or counterclockwise. I hope u guys understanded everthing so far. So my question is, is this prepetual motion? In my opinion the asteroide will be "stuck" while moving in this kind of loop.

I want to simulate like a circuit inside computer, 2D or 3D, but at the resistor place I want an actual voltage to come out KAPAW, so I can have the image of a simulated current and wire inside the computer, pretty much I'd like to simulate voltage at any spot I want inside a 3D graphical space (multiple places) inside a computer. Any idea how I can do that?

I have another question, i would like to raise. Lets imagine that i have an projecter and when i put it in the direction of the wall, the image appear on the wall. So may question is. It is possible to make an "invisible wall"(a thing will block the ligth), in order to appear the image is floating in the air. obs:google glass or glasses dont coun't. My hypothesis is some kind of waves, maybe using nanotechnology(i doubt) or using the sound(an option that seems explorable).

Intro I was walking today on the street and remenber of the past. I think i saw an UFO when i was 8 years. If i was sleeping or not, i have no ideia, but lets continue. Problem It was something like this(sometimes it would appear an red ligth other times blue)(maybe an airplane u would say): Part1(is the cirlce on the top) Part2(is the circle on the buttom) Middle(is where the blue/red circles are placed) Now my questions starts. In order to put this to fly i belive the the parts 1 and 2 have to move. We will not question the way this parts are connected to the Middle for now. Question 1: If only the part1 would spin which way should it be? a)rigth to le…

I run a small R&D consultancy in the UK. I research and build mainly proof-of-concept devices for inventors and small businesses (but I'm not myself an electronics or electrical engineer). Many of my clients have no technical background so sometimes I get enquiries about perpetual motion type ideas. I presently have an enquiry from a person who I'm in dispute with regarding the purpose and function of alternator generators. My prospective client believes that 'self excitation' means that the alternator can create energy. I have been trying my best to convince him that the electricity is generated by converting mechanical rotation into electrical energy. But nothng …

Dear All, First, please apologise my bad English (I'm not from the UK...). If my wording is not clear enough, please don't hesitate to ask me. I'm interested in dc current distribution into the ground for modelling purposes. I could read on a technical paper that the voltage between two points in a homogeneous ground (constant resistivity) could be calculated by V=Rho/(2xPixd) where: - Rho is the ground resistivity (in Ohm.m) - V is the voltage between the two considered points (in V) - d is the distance separating the two points. The formula is extracted from the resistance of half a sphere and whose center is point A, whilst point B is on the surface…