How would you build one? What type of material you would use. How would you be able to slow time down with it?
212872
is the phenomenon where the observed time rate of an observer's reference frame is different from that of a different reference frame. In Albert Einstein's theories of relativity the effect is manifested in two ways:\n\n    * In special relativity, clocks that are moving with speed v with respect to an inertial system of observation are found to be running slow. This effect is embodied in the Lorentz transformation.\n\n    * In general relativity, clocks at lower potentials in a gravitational field are found to be running slower. This gravitational time dilation is only briefly mentioned in this article but is described elsewhere (see also gravitational red shift).\n\nThe formula for determining time dilation in special relativity is:\n\n    &#92;Delta T = &#92;gamma &#92;Delta T_0 &#92;!\n\n        where\n\n            ΔT is the time period as measured by a stationary observer,\n            ΔT0 is the time period of the moving object as seen by the stationary observer,\n            &#92;gamma &#92;equiv &#92;frac{1}{&#92;sqrt{1 - &#92;frac{u^2}{c^2}}} is the Lorentz factor,\n            u is the relative velocity between the observer and the object, and\n            c is the speed of light.\n\n\nNote that this formula assumes that both object and observer are in the same spot, and that their +x direction is the same. The lorentz transforms can be used for more general cases.\n\n\nThis effect is extremely small at ordinary speeds, and can then be safely ignored. It is only when an object approaches speeds on the order of 30,000 km/s (1/10 of the speed of light) that it becomes important.\n\nTime dilation by the Lorentz factor was predicted by Joseph Larmor (1897), at least for electrons orbiting a nucleus. Thus "... individual electrons describe corresponding parts of their orbits in times shorter for the [rest] system in the ratio :&#92;sqrt{1 - v^2/c^2}" (Larmor 1897). Time dilation of magnitude corresponding to this (Lorentz) factor has been experimentally confirmed.
248065
You need to coordinate this with the rest of your group. Your materials that you'll use will depend on the materials of the rest of the device. Is it going to be a realistic version, or a modern version? Is this going to be only for display purposes or is this going to be an actual working trebuchet?\n\nI think you need to talk with your group a bit more first.
28198
There is a perpetual motion machine in the Smithsonian Institute. I creates more energy than it uses. The key is to reduce friction to a level that keeps the spinning weights spinning while producing more energy. the one in the Smithsonian Institute does this but not on a scale that would be of use in todays world of high energy consumption.
554346
Ive seen them used before too but the efficiency and force they produce falls way short of compressed air.  Making an air canon would be your best bet and its probably safer.  It would definitely be easier to construct.
558090
tips about building your own RC helicopter?\nREFER\n       http://www.angelfire.com/blues/heli_project/\nhere in this site all have been explaned well and models have been shown
546175
I certainly hope you have visited the link below for visual and mathematical insights into this problem.\n\nHowever, the only materials that come to mind which lend themselves to a physical model of this transformation are:\n\n o thin-but-rigid springs or "lead" wire(s) as supports/frames\n o plastic wrap as a surface substrate\n o flexible, rubberized, quick-drying paint as a protective layer\n\nI regret that my imagination is limited with respect to this problem, but good luck with your project!
30263
You might be able to make a PM machine based on a vaporizing and recondensing fluid, which is what I'm guessing you're getting at. PM, that is, as long as the necessary temperature differences continue to exist. You would need to vaporize at a low point and condense at a high point, with wheel motion bringing the heavier containers of condensed fluid down to a warmer location for vaporization. It doesn't violate any thermodynamic laws since it takes heat input and exhausts cooler output, just like the water-bobbing woodpecker does. Do it!
143480
Make one yourself, you'll have to do it yourself eventually, why not start now?
362802
You could try lots of things, like:\nbeads\nfoam balls with pieces of wood to hold the sides together\npaper mache \nclay \n\nReally anything that you can mold or put together would work.
521559
Maybe you should try one of those little beanie hats with the propellor on top...If you get it spinning pretty fast, I'd bet you could get a few more inches  on your vertical and a hell of lot more hang time
632458
Do a thing about a high tech ship that can travel at the speed of light.  This would allow you to go out on a trip for two years and come back to Earth where in Earth time you have only been gone two years but the Earth has aged 200 years.  Take a look at this website and you should be able to whip up a pretty neat experiment.\n\nThen you could top it off with you would travel to the future to see all the cool technology of the future world by using your future technology.
203810
get like a lever, those moving stuff that you can place stuff on then just roll it. Or get more than 1 person
295691
You're going to need containers to move stuff around in which fit closely to the tubes, the tubes themselves, and then an air compressor or vacuum pump to blow them around.\n\nThe link below is for a company which will build it for you. I suspect that not many people build these themselves.\n\nGood luck!
338258
Well see as though you dont really have much time for a project that involves a control... But here is an awesome listing that has loads of ideas with explicit instructions not to mention material list for a wider variety of projects. Since I have no clue what realm of science you were intrested in... This has a little bit of them all! Good Luck!\n\nhttp://school.discovery.com/sciencefaircentral/scifairstudio/ideas.html
184277
If i were you i would try to make one... think potatoe gun, and grappling hook... if you want something quiter i would think about a crossbow+grappling hook...
523551
i want to make a system that gets mounter to the passenger front bumber of my car, so when im stuck in traffic and some _hole feel he deserves to drive in the emergency lane, the laser will burst a hole in his tire, and give him a reason to be in the emergency lane.  Some issues with this system is the timing of when to fire the laser, how much power the laser would be.  You dont want to accidentally fire at the wrong thing, so these issues must be addressed first.  I think thats pretty innovative.\n\nwhilst working on my M.E. senior design project, my sponsor (an artist) wanted to make a dynamic hologram depicting a full COLOR rainbow..  Yeah, I know...  It made for great jokes the entire year.
609880
Time compression.....sounds cool.  I think your question (what approach to take) is too general to get much good feedback here.  Where are you in the process?  The proposal stage?  Concept paper?  Have you picked a topic yet?  The other answer was correct in terms of finding and reading your university's thesis guide, it will have a lot of good information.  Feel free to email me with questions.