Engineering

Has anyone heard about explosive devices that cannot be detected by a magnetometer? What can we do about that? It could become impossible to detect explosives worn (or surgically implanted) in suicide bombers. Or is there a way to detect them? The political implications are enormous, we would finally become a "police state" thanks to some whacko jihadis with undetectible bombs. BTW, on this subject, see the recently aired video called "Terror at the Mall" about the Westgate Mall attack in Nairobi by 4 Al Shabaab dim-witts, ranging in age from 19 to 23. There were many mall cameras following the action. Interesting to see what we may be up against. Here in …

W.A.R --- Wandering Autonomous robot is a socially interactive robot which shows different behaviours under different circumstances. The main behaviour of this robot are: * Obstacle avoidance * Light following * Food seeking (Light source in this case) * Prey & Predator behaviour * S.O.C - State of charge monitoring * Charging - through solar panel 1--- So here it is how its gonna work, initially when u gonna switch on this robot it will scan and mapp the arena with help of SONAR and servo then it starts wandering in the arena randomly while avoiding obstacles and walls of the arena. One good thing about this robot is that its very fast…

I am new to the post. I need help with a experimental problem. I am testing to see if radiation effects the emission from luminophores on sample substrates. I have very limited number of samples to test. My first problem was a measurement accuracy issue. The emission measurement device is notoriously sensitive to the slightest changes. In order to reduce the variation between measures, I take 16 measurements of each sample at each test point. Then I average the 16 measurements. This method has reduced my error by square root of 16 thus much more accurate results (usually ~2% error which is very accurate for my case). After implementing this solution, my next issue is to "…

By using a motorcycle engine of any kind,you will be able to make your own car.first u will need to expertise on how your frame will actually be. this is upto you to decide.you can contact your homeplace mechanics in cars and motorcycles and you will be helped.the main components of this car are the front and behind suspention. after your frame has been made ,make sure you place the motorcycle engine on the behind suspension. connect the gears to your frontwheel suspention so that you can change gears easily. Then you should be able to place the motorcycle tyres(4) and be able to design how they will work hand in hand with both suspensions. GOODLUCK ITS AQUESTION OF CREAT…

This engine with three spark plugs and five cylinders may end up in certain types of machines that need small efficient powerful engines. http://www.gizmag.com/duke-engines-axial/33631/

Hello everyone, I am currently searching for a bachelor degree in mechanical engineering in Europe, taught in english, and I need this uni to have freshman courses first since I am an AP(Advanced Placement) student and am required to take freshman before beginning my Bachelor's. I went to QS world mechanical eng uni ranking, excluding the UK, I found only 3 uni in Europe that teaches in english(top 150). Unfortunately, none of themhas freshman. I am seeking your generous help as I am left with no possibilities that meet my requirements.. Thank you very much.

Is it possible to replace a camera's normal sensor with an infrared one?If yes,what other modifications does it need to make it infrared?The lenses which are normally made of glass which doesn't let IR pass through?Is it necessary to modify the microprocessor to or change it?Can you explain why if this can't be done?

Webinar on SimCafe Portal to Learn Simulation Learn how students and professors can use SimCafe portal created by Cornell for teaching and learning CFD & FEA simulation: http://view.s4.exacttarget.com/?j=fe7d1d74726c02757d&m=fe9815707067037d72&ls=fdfb1772766c057f76147873&l=fef01c757d6101&s=fe2c11737761057b731576&jb=ffce15&ju=

Hey...just a few moments back I heard(*lolz...not for the first time)the sound produced by the fan when its rotating..so anybody who could explain me the reason of the vibration sort of sound....? Thx in advance I wrote the query in a wrong manner....dont reply and sry:(

Hi all. Along my life, I have seen some variety of manufacturing machinery. Never had the luck to see how mechanical wristwatch parts are made. Not even pictures. And they have been built since at least 1700. How were the parts made then ? The tooling is a mystery to me. And beyond this, who makes and how is the machinery to make wristwatch parts ? The entire factory fits in a suitcase, right ? There is a hidden universe there. What do you know about ?

Engineers in academia seem to do very similar research when compared to scientists (albeit a bit more on the application side), and I'm sure they apply the scientific method more that the engineering design process when doing research. So, are engineers who do such type of research considered as scientists?

Hello everybody, I need to decide what is the university that is the most successful and popular in research on the energy field. I will then major in mechanical engineering there and apply for an energy- related job.Every ranking site that I visit provides me with different information. I am not sure which one to actually base my decision on. Thank you very much in advance.

Scientists are trying to figure out ways to save earth and to move to other planets if earth or earths atmosphere/orbit is ruined. If the magnetic field is created by our core we need to core to survive, we also are effected by the sun and the moon. The moon effects the currents and the sun gives us heat that we need. Our atmosphere is what protects us from debree and getting too much heat from the sun. Beneath the atmosphere is weather. Weather is effected by a number of things including what lays under our crust. We cant remove the sun, we cant remove the magnetic field, you can always stop things like earthquakes. So why would we want to move to a planet that probably …

Hi. I would like to ask about applications of 70 GHz radio in different fields, except cellular comm that already known. Maybe someone can help me P.S. 70 GHz (E-band) communication system able to work with speed up to 3 Gbit/s on distance about 5 miles (8 km).

Many low income African and Asian countries don't have any Fossil Fuel reserves and they import Coal and petroleum for electricity generation and it's really affect their economy.but many of these countries have huge marginal land it's suitable for bioenergy crops. Growing some fast growing drought tolerant Grass species and built some biomass burning power plant will give them some relief.many tropical grass species can give high dry matter harvest and can grown on dry lands ( Napier grass can give up to 75 MT dry matter per hectare per year but can obviously we can get at least 15-20 Mt DM on dry land ) some fast growing tree species also can used for biomass bu…

Hear me out here, because I feel like this shouldn't work but I don't know why. Here are the two pieces of knowledge I base this off of: -The concept of acoustic levitation is that a standing wave of sound produces enough force to lift an object in midair and hold it. -If one takes a sufficiently thick piece of paper or thin sheet metal, folds it in half, places an object between the two parts of the fold and attempts to make the angle of the fold more acute, the object is drawn back toward them until it pops out of the wedge. Therefore, if one was to make a cone of sound sufficiently powerful (whether that entails higher frequency, volume, or both), point it at…

http://www.technologyreview.com/news/519421/the-first-carbon-nanotube-computer/ If it's possible to build microscopic computer processors, is it also possible to build a microscopic camera/bug/video camera which records in good quality? Also, could you somehow make it airborne and control it like an RC drone?

And you believed the tale of nanotube processor? I regret that the MIT technology review prints such titles.

wasn't too sure where to post this, I thought engineering complimented it best. If we were to sustain life on a vessel in space, what would be the most practical method to feed ourselves? I would assume livestock be out of the picture. With resources at much less availability than on a celestial body and ventilation not as free as a biosphere, what would be the most practical method? Corn, roots, moss, maybe even chemically synthetic minerals? What would be the most efficient way to feed ourselves in space? Growing crops and harvesting them? Livestock?

hello all, I'm new to the forum world. I wanted to start off with this topic of implantable CONSUMER electronics (not medical). i feel like there would be lots of controversy similar to the whole RFID scare of obama care. 1) what are the ethical implications? (i have a very practical and technical sense of perception so i cannot think to deep when it comes to ethics of the technology. i would really appreciate outside opinions haha) 2)From an objective point of view, how would the "assimilated" human with enhanced capabilities (ex: seamless access to data, fully integrated health system-implanted medical diagnostics., enhanced perceptions, etc.) change society…

Hi. This could be on some other forum, but, here it goes. If any electronics guru is around, I would like to know how to measure the (antenna) input impedance of a television. From ~50MHz to ~800MHz. in whatever steps. 1 MHz, 5MHz, 10 MHz... Would you have the proper instrument ? What is it ?

Article removed Is it possible to build a microscopic camera/video camera/bug which records in good quality?

Simply put, Solar panels don't work when the clouds are overcast and at night, sunny areas of roofs are too small to accommodate all electrical needs, Battery storage is useless because there is no place to put the DC to AC inverters. Circuit breaker panels are not accessible to parallel wire hookups, and buying a new one is a huge extra expense. If there is no basement or a place to install the inverters, a small outside building will be needed to house them.

Hi. Would partial vacuum desalination or distilling produce also cooling as for 'air conditioning' ? The vessel containing the liquid being distilled will get cold, right ?

Hey All, I have a camera sensor node that is periodically sampling the camera to detect activity. Then theses samples are first stored in the memory and then processed. My question is: do these sampled follow a certain probability distribution (Poisson, exponential, etc..) and what kind? Any help is appreciated.