Engineering

The black box is the housing. The green bar will be wrapped with nichrome wire. I need help calculating how much voltage i need to run. The battery supply must be button cells. Im sorry for the bad explanation plz ask questions so i can further explain. The wire must be hot enough to burn

So maybe I'm just a wild dreamer but I have a theory that has been rolling around in my head and I thought I would throw it out there for someone to critic. My theory is on carbon nanotubes and the production methods to date. I have read many articles online and have come up with what I believe would be an interesting experiment. When I think of carbon nanotubes I think of cotton candy. Its light flexible and comes apart in almost lighter than air strings. So if this thinking is correct why are the carbon nanotubes not being produced with a similar method? Inert hydrocarbon gases pumped into a super heated spinning perforated centrifuge with a collecting sub straight arou…

See this video and how wave power is generating electricity at costs well below that of nuclear power!

There are many places in the world where some fixed connection is being considered between two land sides divided by an ocean or sea. Projects under consideration are for example: * bering street (alaska-russia) * gibraltar (marocco-spain) Engineering faces challenges there. But in all those cases they opt either for a fixed standing bridge (on pillars) or a tunnel, or combination of them. Why could (in theory) a bridge not be built on floating structures attached to the sea floor with on top of it a kind of bridge design. The railways or roads then would go through a tube which would have some flexibility and attached to the top structure using dampers, …

Hi. Does anyone know what is a distance the compressive stress propagate in a horizontal isotropic plate whilst a plate is loaded horizontally. The compressive load is applied to the right edge of a plate by a cylindrical indenter. The left plate's edge is fixed. Laws, formulas, principles .. Thanks in advance.

Could someone elaborate me the definition of reduced stiffness (how it differs from the stiffness) of a body? When and how the reduced stiffness is measured? Regards

Am posting this in 'Engineering' as at the 'Lounge' would not make it to its level... Very worth for all ! BIBS ON ! -----> Enjoy...

I have been able to find small heart beat sensors (in the size of wrist watches). I would like to know what kind of sensors are employed in this watch? Regards

Does anyone know whether the common claim that, had the Titanic have simply put the engines in full reverse and then hit the iceberg head on, that it either wouldn't have sank at all or else would have taken much longer to sink? At first glance, this seems like a fairly likely conclusion, considering that the iceberg essentially sliced open the entire side of the ship's hull, and I can't help but wonder whether it could have simply plowed right through that iceberg if it was going fast enough. But on the other hand, the kinetic energy behind the ship when it struck head on would likely have been gargantuan, so might this have in fact made the situation even worse rather t…

I am researching about Agriculture Patents . Could anyone help me out? Thanks

When and how will we be able to achieve the technology to travel at the speed of light? It would make exploring foreign planets much easier.

There are a lot of articles and doccuments talking about the "Free Energy" machines, but there is any real demonstration of its operation? There is any physical explanation to accept or to refute it?

Is there a 'resonant/optimal' frequency to be selected for heating a particular metal/alloy, or the dimensions of the part to be worked on has a factor on selecting the frequency ?

Dear Forum, I need a simulation program that could be used to optimize the free air flux distribution of a pulse coil (capacitive discharge). I would like to change parameters and see a plot of flux lines around the coil, and be able to determine Gauss levels at different points. Does anyone know of anything that will do this? Thank you very much! Sincerely, Mike B)

ok so i have somewhat had an idea of making a laser that can melt metals or potentally be used as weapons of war

For some reason I've been pondering the idea of building a real life iron man suit. Obviously to build such a suit would require a lot of power. The mega powered lasers weapons and ion thrusters would require anti matter for power which is entirely impractical so we will have to drop those. I was thinking a 1kW hydrogen fuel cell with tanks of hydrogen compressed to 700 bar(Not sure if those tanks will work) should be enough power. To animate the exoskeleton I was thinking air muscles with 3 times the lifting power of a human's muscles would be a reasonably achievable feat but I'm not sure how much psi would be required or what materials to use for the air muscles. Th…

Hi all, I'm trying to figure out of its possible to draw something on Paint, save as JPEG. rastor, and convert to a vector, DXF, format? My goal is to draw something and CNC machine it. HAs anyone tried something similar?

This is neeeat... look at the streamers There is many more related videos, just picked one. Filled with controversy, many arguments, they built this one to prove/disprove. I like the "It may work in practice, but won't work in theory"

hey guys have you heard/seen about intergalactic space craft propelled by light hitting umbrella like structure of space craft, giving very little push to space craft. And idea is over a long distance it will have speed equal to some % speed of light. cause I have seen this in discovery channel. How can we explain this?

I'm using a current transformer (LEM APR 50 BIO) to measure current at inlet of machine. The transformer outputs voltage. I'm using a MYDAQ with LABview to read in and record data. I was just looking for advice on the setup? I've never used a MyDAQ or LABview before. Do I need a resistor, or how do I find the current? Thanks

Does anyone work with or understand PAM fluorometry for the purposes of assessing ETR rate in microalgae? We have a Phyto-PAM, but not sure how to operate - everything is set up, but how to use the software to get the correct results is a bit shaky. I think if I understood what results I am supposed to be getting, then I will be able to play around with the settings - but I am completely new to this. And no one else at work seems to be able to help me either... I've attached the manual of the PAM we use. Thank you! phyto_4e.pdf

Recently, I came the topic Thermoelectric Modules, Coolers. I have a basic doubt. Assuming, I am supplying 100w of electric power to a thermocouple and heat starts generating on one side and cooling occurs on the other side. I would like to know what percentage of the electric power is converted into heat? Does heating : cooling ratio equals 50 : 50? Regards

Does anyone know why the traditional 'gangsta' shooting position, namely holding your pistol sideways, would make aiming the weapon more difficult? I just watched an episode of MythBusters where they were testing various shooting stances, and they found that holding the gun sideways actually rivaled shooting from the hip in its difficulty shoot accurately. This makes absolutely no sense to me, because the way I see it, whether the gun is upright or sideways, you can still use the sights just as well. Is there some kind of engineering reason behind this?

Hi, I have to start a campaign in a pen and paper role-playing game soon and I came up with what I think might be an interesting setting. I just need some information to iron out the details. Skip to the bold part if you don't care about the premises. Basically, the world where the campaign is set is experiencing an ice age: smilodons, mammoths and stuff like that. There is a southern state which is somewhat like Mongolia before the great Khans: fragmented in warring tribes, each led by a Warlord, fighting against each other for food and survival. Ancestor worship, great warriors, supreme hunters, only the strong survive, etc. One Warlord rebels and s…

I am designing my own Charpy impact testing machine and I am unsure what would be the best as well as relatively simple and affordable method I can use to accurately measure the angle the pendulum travels after it has broke the sample. I would also appreciate any complex and more expensive ideas too that I can consider, accuracy and reliability are the most important things. I have thought of some methods but a lot of them will cause friction against the pendulum which could over complicate the final calculations. For anyone that is not familiar with the Charpy method here is a link to a brief description: http://www.twi.co.uk/services/technical-information/fa…