Engineering

Do you think that Engineering is a good career choice.considering outsourcing and the decline of industry?Do you think it is a "good job" Also... I was wondering what skills I need to be an engineer.You see I am very curious and like to know how things work.I am very good at math and also at science.I love all types of science esp physics and math I can grasp concepts quite quickly and am very analytical. However I am not very hands-on or into tinkering.I still like to be practical though. My family doubts my ability to be an engineering student for three main reasons 1.I am not detail -oriented.2 I am not a hands on tinkerer.3 I am theoretical all true.However I ca…

Hello Everyone, I am a student from California State University East Bay (formally known as Cal State Hayward). My group members and I are currently conducting market research on spectroscopy as part of a course requirement in our entrepreneurship course. More specifically, we are studying the demand for infrared technology in institutions, pharmaceutical industries, and other research industries from a marketing point of view. We have created an online questionnaire in regards to the applicable uses of infrared technology. The questionnaire contains 17 short questions plus a comment section at the end for any additional information you may be able to provide. Th…

If Engineering is not the best place for this, OK, but there would be a lot of engineering problems to be solved in a colonization project on the Moon, or Mars. Wanna discuss it? Is there a source of fuel and water on either or both? Are those sources exploitable? Food? Perhaps subterranian greenhouses?

Ok, I'll preface this by saying I know almost nothing about electronics, except the bare minimum I'm picked up fro Physics 2 and working with various things at the user level. Anyhow, a bit of background: I'm going to be doing experiments soon involving electromyography, the detection of electrical impulses in muscles to tell when they're active. Specifically, I'll be working with snakes, on locomotion. Now, our current setup has direct wiring, in that the wires go from the snake to the little screw-down connector thingys (told you I was bad at electronics) to the amps, etc, which means the length of the wires constrains the motion of the animal. What I'm wonder…

I have a couple questions regarding parameter definitions. I would really appreciate the help. 1. In most of the transistor, I've noticed that most of them have the term "Junction to Free-Air Thermal Resistance" and "Junction to Case Thermal Resistance". I am confused about this matter, so I just want to ask, what is the definition of those terminologies. 2. Ripple!!!! All this while, I thought of ripple as a small oscillation due to a filter. Am I right? Thanks in advance.

I have been given the project of making a radar for detecting Narc Aircrafts. Any info words ideas about how to do this (please something usefull) most of these aircrafts are cessna like and dc-x like. Radars based on the doppler effect are not useful, and i need to make it the cheaper that i can. thank you.

I'm building an amplifying circuit on PCB using two 741 op-amps, both inverting, giving an overall gain of 10. My output signal though has spikes...I've tried decoupling the power supply and that doesn't make any improvement, is there anyway to get rid of the spike and get a steady output from the op-amp circuit?

I plan to build a miniature wind tunnel, a lot like the Wright Brothers' used in 1901. I have stabilization (of model and air currents) all set up, I just have one problem- I have no devices to measure lift or drag. The site I went to (don't have a link, but if you just google up "wright brothers wind tunnel" you'll find it) mentioned that they used old hack saw blades and other things lying aroung to make their devices. My assumption was that they used a spring that was calibrated so that each increment would equal a notch on the hack saw blade. I want to look into making instruments that could do this or just find out what modern-day equivalents we have that will wo…

Can anyone recomend a good book or online resource to aid in making a model rocket? And if anyones actually made one is it hard and what sort of things will you need inc. tools etc. Thanks

I am learning how to make a PCB board using OrCad Capture CIS version 10.1. I've created the whole schematics for the circuit. The question is, what are the steps that is needed to make actually come up with PCB board layout? I will be greatful if someone can help me. Thanks in advance.

If you put wings on a car, would the lift make the car lighter and thus use less gas?

My dryer makes a very loud and continuous noise when the timer's up. How do I stop it? I'm no mechanic, but I want to stop the noise somehow.

I thank you for your time. I am new and I have been working on this problem for a while. Hopefully, I can explain it clearly. Motor I am using is a 12Vdc 1.7amp geared motor. Summery--I am trying to hook the motor up to a thermostat so that a window will be opened when tempature is above 80deg. And the window will be closed when the tempature is below 80 degrees. What I think I need to do: The thermostat can switch a relay on or off. So, use a relay and two limit switch on either side of the window, I should be able to have the window move one direction when the relay is on until it hit the limit switch. Then when the relay close it will move the wind…

Are there any glasses right now that can ignore the effects of mirages? Meaning if you wear these glasses, you won't see the mirage.

We are using 35% H2O2 for oxidizing spent caustic (strength between 1-10%, rich in sodium sulfide and sodium mercaptides, ranging between 200-20000ppmw). My concern is about using carbon steel vessel for mixing streams of caustic and H2O2 solutions, with recirculation pump ensuring 100% oxidation. How does the presence of H2O2 affect carbon steel equipment? Dillution rate of caustic is very big (max. allowable concentrations of sulfides and mercaptides before injecting H2O2 are 4500ppmw; vessel volume is 25m3), so unreacted H2O2 would be in very small concentrations. Oxidation is controled by H2O2 dozing and reaction temperature (<80C). If you have any suggestions,…

Does anyone know how artillery shells (Not fireworks) are made, The part i am most interested is the ignition cap. How do they make it.

Hello everyone, I am using LM331 Precision Voltage-to-Frequency Converters. In the data sheet, there's an application for the purpose of Frequency-to-Voltage Converters. Below is the link to the data sheet: LM331 Data Sheet Using a frequency modulated laser to send information, on the receiving end, there will be a photo-electronic sensor, a photo-transistor, LF14F1. I've tested the modulation scheme on both sending and receiving ends of transmission. They works perfectly. The square waves that is sent through the laser gets received as the original signal with all its properties (Vpeak-to-peak, frequency). However, I would like to convert the frequency on the …

How does an electric camera shutter work? I'd like some serious detail here - I want to reconstruct the electric open/shut action that makes the shutter work. Also, how are the shutters so fast? Thanks in advance.

I read about a school doing that. How does it work? How can I make my own tracking device? Is it related to the GPS system in cars?

I saw mention in a thread (Maybe the plutonium one? Or one about railguns? I've lost track...) about a TOKOMAK reactor. I'm pretty sure it was YT that mentioned it. What is a TOKOMAK reactor? [EDIT: When I searched, that's the only thread that I got, and it only references them, and says nothing about them.]

Well I have a circuit that takes sound input. It runs it through a 741 op amp and then turns on bit on or off if there was a high sound. I don't have the values of the resistors and whatnot figured out and hoped you guys could check my work and maybe route me to some pages on how to calculate the values. Or hey if your really bored you can do it for me! Edit forgot the link hehe... http://img.photobucket.com/albums/v358/lookatmytool/Schematic2.png

Will I fry this integrated circuit. Just made up a custom circuit and the integrated circuit (some sort of amplifier) is running at 40 deg Cel. can they run that hot? I can cool it with a fan, but do I need to?

Speakers and back-pressure ratio. RUMBLE I am making a speaker box and want to maximise the rumble as it is for a special effects type application. I have practically tried all variations of speaker size and back chamber size and shape. anyone got any good ideas how to calculate and maximise this effect.

I am interested in making a telescope like this one, Homebuilt scopes Has anyone looked at the moon at 600X?

You may have heard of an emerging nanotechnology called quantum-dot cellular automata or QCA. There is a free open source tool available for you to download and explore the design of nano-scale computing circuits with this technology. You can download the tool at: http://www.qcadesigner.ca There is also a basic tutorial on QCA and how circuits work using this technology available at: http://www.qcadesigner.ca/tutorials/QCATutorial.html Let me know what you think.