Build Definition and 472 Threads

how do you build & design a bridge with these materials? 4 drinking straws 10 pieces dressmaker's oin 5 pieces of 5-peso coins (the bridge should be able to withstand the weight of these coins) 1 short bond paper and a 1 meter sticky tape Anyone who has performed this project...

has anyone here ever built a crystal radio? what parts would i need and where can i get them? in the physics forum they said one could be constructed to run off the radio waves themselves, which is the kind i would like to build. thanks

Homework--- Build Atomic Bomb What is the general output of enriched uranium from an electrolysis and fractional distillation process? I have already researched the outputs for gas diffusion, thermal diffusion, gas cenrifuge, laster isotope separation, and mass spectroscopy. If you could give...

Anyone have some ideas about how to build a scale model of a trebuchet?

hi i am going to build a pc from scratch, i have chosen a Asus a7n8x motherboard and an anthon xp2500 processor, but I am stuck choosing memory, can anyone tell me what memory will work best with this combo?

Ok, so how does DNA build things? Say, even something as simple as a virus. The virus inserts its DNA or RNA or whatever, and it's coded into proteins. So how does the protein make a shape? Like in that T4 virus that looks like the lunar lander thing, how do the proteins assemble into the...

can someone advise me please, i want to build a PIC controled robot that can be programed via my pc,i have a maximum of $200 to spend, i have looked at loads of adds on the web but get confused, I am no stranger to printed circuits so self assembly would be no problem, the robot maybe a...

First off; get the fuel tank, get the fuel supply lines and attach to ionisation chamber. Ionisation chamber- get a small metal semicircular dish, and weld in americium isotops (to make it ionise the gas) Put in some small holes for the fuel supply lines. Heating chamber- This is a larger...

build two electromagnets, stack one on top of the other so that when they receive current they will repel each other. how far can you separate them? how much current will it take for maximum separation ? what difference does it make if they each way one gram or ten tons?

Alright for my physics class we need to do a mousetrap car... A car that is only powered by the force given out by the spring on a victor mousetrap... You can't use rubber bands or anything like that... Does anyone have any ideas? The idea of having an arm attached to the spring and pulling...

Does anyone know how to build a device to detect subatomic particles (electrons, muons, neutrinos,, and the like...?) Please, if you do, send me some instructions. Thanks.

[?] I'm thinking of building a simple cloud chamber in order to detect small particles such as muons, neutrinos, and the like. I have read some handbooks but I would be grateful if someone could lend me a hand by providing some instructions. I only have three months to prepare this so I need the...

I was thinking about making a cell phone on my own, but I don't know where I can find sufficient information and the requied knowledge to start. Can anyone please give me any useful advices and information? All helps are appreciated.

i'm really into electronic but right now i have a limited knowledge of electronic circuit. Is there a place that has basic electronic projects that I can built and learn at the same time? I like the projects at http://www.aaroncake.net/circuits/index.asp but they're too advance for me. Do u...

I really need help! I along with 4 other people have to build a car out of ONLY wood and wood glue. The car must be powered by a person sitting in the "cab" of the car. It must travel 30 meters. For every extra person we fit in the car we earn more points. The only rule is that we can only use...

would it be to expensive to build a laser capable of cuting intricate designs out of thin metal or wood about 0.5mm? for a hobby project.

Hey guys, I am new here. A firend and I have decided to build our own rocket. adn we were wondering if any of you knew what the brun temp. in celcius was for a model rocket engin. We are looking at the G2's. any help would be great here. thanks a lot!

Here's an interresting poll for you all. The government has decided to build a power plant nextdoor. You have no way to convince them to put it elsewhere (just assume you drew the short straw). You also don't have the means to move away for at least 10 years. They do give you the choice...

Build Your Own Cruise Missile For Less Than $5,000! You've just got to check out the above link. The thing is : Why would someone want a "Cruise Missile" ? Iraq comes popping into my head !

"It's the smallest synthetic motor that's ever been made," said Alex Zettl, professor of physics at UC Berkeley and faculty scientist at Lawrence Berkeley National Laboratory. "Nature is still a little bit ahead of us - there are biological motors that are equal or slightly smaller in size - but...

What would you build, if you were given godly powers and could defy the laws of everything! Id build a device which fitted on my wrist, could telport me anywhere through time and through space and could get any file off the internet within 5 seconds, no matter hwat sixze it is, and store it...

I have wanted to build one quite a few times and one ofmy friends showed me a good website and it is a $50.00 one if you buy used components and it looks pretty good but we would have to set up our own propelling system because it moves pretty slow can't remember the exact speed... So all in all...