Engineering

I have one "stupid" problem... I ordered an embedded fanless computer that doesn't turn on automatically when power is supplied. Instead it waits for someone to press the power-on switch. I found no BIOS option to solve this problem (there is no "power on after power faliure" or similar options in BIOS, or at least I couldn't find it). I only had a brief time to examine the computer (had to ship it to its final destination). I found that: - as I said, no BIOS option can help me - the ATX-like power supply is integrated on a single multi-layer high-density printed circuit board - the power-on switch leads are the only accessible places where I can solder wires. I …

Hey, I'm looking for high critical temperature superconductors (110-130K range) for a project I'm working on. Does anyone know where I can get these? Thanks

plz suggest me a logical + recent trend mechanical project idea .... plzzzzzz. i need one before tmrw 10 .... plz help me ......

what is western blot

What is the strongest metal in the world? Whatever metal it is, is there a way to make it nearly indestructable? If not, would anyone be able to make such an element?

Hey, I know this is a little off topic but I'm having a little trouble finding the information .. everywhere I look the answer is just ''take it to a mechanic'' .. so here's the question, how do I do an oil change for a 1990 toyota celica manual and how much oil will I need to replace the drained oil? also what grade of oil is best for a car this old? before you ask yes I have the ability to jack the entire car up enough to get under it and all the tools I should need. Thanks for your help.

Hi. In need to lift 700Kg to the place an item will be installed, I have been looking for a winch. A couple of salespersons said the winches they sell are rated for 2000Kg; which fits safety margins but are not meant for lifting vertically, just pulling horizontally with such force. I do not get it. What am I missing, what am I not considering as why the winch force cannot be used for lifting ? [The industry uses hoists for the same task, but chain length limitations do not fit my task (35 metres height). That is why am after a (wire rope) winch] Edited: added a random picture borrowed from the net as example of task: ----> http://escocomm.com/wp-conten…

Do you think scrubbers are actually helping the environment? My opinion is that it's really not that useful because it creates more problems than solved. So much of the residue from the reactions in the scrubbers need further processing.

I was just wondering if anybody had anything interesting to say on this subject. A quick Google says that there is a relatively new diamond based form of Aerogel that might find application in optics. I have a number of reasons to be interested in this, but nothing immediately comes to mind with respect to selection of an Aerogel, implementation of the material in optics, or other design considerations. I want a telescope, so my first instinct is to try and visualize a process whereby I can make one myself. I'm also interested in applications in Microscopy.

Many people use ebooks whether as a primary source of (books) reading material or for occasional lighter reading.I myself, being a college student, find them quickly replacing most conventional books that my teachers recommend. It seems highly likely that ebooks will replace most conventional books over the next 5 years (there are already several indicators that this may happen even earlier- ebook sales at Amazon have exceeded their physical book sales). From what I gather the major detriment to the widespread use to ebooks is the difference between ebook readers and physical books.Many people I have talked to have described ebook readers(ipad (not primarily a reder but …

I've a problem here, my boss need me to measure the hardness of a piece of copper strip, but we didn't have any hardness test machine (vickers, durometer, brinell etc) to do that. But we do have a tensile machine. Can i do something with the tensile test to measure hardness? Your help is really appreciated

I've kind of been following this story with a bit of bemusement and surprise, wondering how could this possibly happen? Also wondering if maybe it is another carefully designed ploy to get into their system, perhaps, showing them a form of dummy without any real tech, perhaps, only to unleash another form of trojan on the sly. At first, I read that, without an instruction signal, it was designed to find a suitable landing area to land. Today, I read a report on Fox which stated other likely scenarios instead. It does seem likely that they would have a better contingency plan than to deliver it on a silver platter if only the signal is lost. Which leads me to my next…

I'm wondering if it's possible to make LEDs, displays and semiconductors using a big ion deposition machine. The machine would be like a very slow and doubtless huge 'replicator' that can manufacture a wide variety of things by spray-painting atoms onto a substrate. Ideally the device would also dissociate and purify the silicon, metals and other substances as they are used, like a mass spectrometer; it would not have to be frequently dismantled for cleaning or maintenance (unlike a mass spectrometer); and it would not contain anything extraordinarily rare or costly. If anyone takes an interest, how big would such a machine have to be for a yield of, say, a gram of pr…

This one's neat, if you wait a sec...well, you, actually about 30 of them, if you'd like to kick it ahead... Godzilla meets Japan, also cool, awfully grainy & old now but still worth a quick viewing ... A neat hologram demo, also old but interesting... You'll also want to scroll ahead here, it's a yawner 'til about 2:15 into it.

IMHO, the Maglev train using computers to guide a train by the principles of repulsion and attraction is a superb example of modern engineering overcoming a problem. The problem is to move populations around as quickly safely, and without hassle to different conurbations, either within a country or internationally. The priciples are demonstrated below: and How Maglev trains work However, it strikes me, as a member of the energy consuming public, that this seems to use a lot of electricity and raw materials. Of more concern to me is how much energy the trains will drain from the National Grid, and how this compares to the amount of fossil fuels u…

agree or disagree

Ok so here is my understanding of an EMP: A surge of electrons (I know it's much more complicated, but this is the part I want to focus on) in an electromagnetic field. So, I have a few questions. First off, am I right about the EMP being (at the most basic level) a huge surge of electrons through the air? Also, if this is true, could this electron surge be used to power a dievice wirelessly? Also, how can I calculate the power of an electromagnetic surge(EMS) in Amps/Volts/anything than can be converted into amps/volts? One last question (slightly less relevant): How can I use a magnet to increase the power of my EMF/EMP/EMS?

Hey guys. I've been asked to design a steam power plant for a college assignment. I understand most of what I'm doing, but I was wondering what are general values for the minimum and maximum pressures and temperatures which can be handled by a typical boiler, condenser and turbine? Would be useful when choosing values. Thanks.

Ok, so I've finished all of my calculations, written most of my lab report and am finally at the discussion stage...but I can't find any typical efficiency values for concentric heat exchangers to compare my results with. HELP! If anyone knows where I can find these let me know, my report is due on Tuesday (29/11/11). Cheers!

I'm thinking of making a low powered coil gun, but I don't have a lot of experience with electricity and electromagnets, and I have a few concerns about the following setup. For the thing that turns the coil on and off, I was wondering if using the projectile as a bridge between two contacts in the barrel would work. The idea is that when the projectile reaches the two contacts, it would complete a circuit that turns on the power supply for the next coil, and also turns off the previous coil if there is one. So for a single stage gun there would be two sets of contacts, the ones that turn the coil on, and the ones that turn it off. Do you think this would work, or…

The most energy efficient bulb.... is there anything more energy efficient than an LED light bulb...aka... more lumens per watt http://www.designrecycleinc.com/led%20comp%20chart.html or a better type of LED that creates more than 118 lumens per watt?

"In depression, glucorticoids are elevated, life seems hopeless, and rats think their bar opens shock circuits. If one is using effort on bad behavior, its often best to remove its substrate from what enthralls ones focus. Freud posited that depression is aggression turned inward, suggesting persons adopt annoying habits of characters no longer available to them; but it seems more like the rat who thinks it can control its suffering. Persistent delusion begins to harm more than help - although its feeling of control at first damps its stress response, it eventually gets more stressed than rats who never had control. Sapolsky, Robert. <i>Why Zebras Do…

How the inner wheel angle is more than outer wheel angle? is it natural ie if i design a steering linkages then it will operate like this or we have to do something to make inner wheel angle more??? how to find the inner wheel angle ???

Greetings all, Research, and development stages. The idea of using solar power has been determined to be a viable resource. There is a lack of information of engineering based concepts on the subject. What I am suggesting is, engineering, and development. Is there any information you can provide, listing the best solar reflector designs ? I have not seen enough research leading to development, or concepts that increase the output of reflectors.. Is there any one working in the field who has engineered a solar reflector? "The smaller the mirrors the greater the reflective power." Sincerely, super-ball.

The kind of thingy that stimulates inventiveness, curiosity, and more... http://www.sciencema...nt/334/6058/962 Science Magazine is pay-for-view, alas, and reports elsewhere are very incomplete: http://latimesblogs....?track=lat-pick From what I read elsewhere: - This is a lattice of very small metallic tubes, made as a single part - Newspapers call it a material, which it's not in a strict sense - A frame of rods is first obtained, I understand by many crossed light rays that polymerize liquid MMA into solid PMMA - Catalytic nickel is deposited on the solid frame after liquid MMA is flown away - And the solid MMA frame is "somehow" removed from within the nic…