Recent content by Syed F. Karim

That fella Arsonade really keeps me in grins. So he's trying to build a PMM--good for him. I don't see anything wrong with trying to do something that has never been done--how else would the really huge discoveries and leaps in progress be realized? Didn't everyone laugh at the Wrights? And...

Yes it has positive lift of one pound, but No it does not rise just like a small balloon. It still has very large mass, so that one pound lift results in very small acceleration. If a small balloon with a positive lift of one pound has an ascent rate of 1000ft/min, would a 1000lb-truck with...

Let's say that I rig up a truck to a giant helium balloon, but I load up the back of the truck with enough stones so that the truck has reached a state of neutral buoyancy--its just floating in mid-air, not rising not falling, just there. Now let's say I take away a one-pound rock from the...

Yes, sir, you may. Although I did pose a hypothetical situation at the beginning of this thread, the situation itself is not really what I was interested in. I am an inventor, and being an individual of limited means and education, I have no choice but to pose parallel problems as threads in...

Hello Mr. Enigma, What is a pulse-width modulator and would it really bring down the power consumption (a lot)? And I'm not all that concerned with damaging the pump, it's only got to do its job a few times or so (move the helium, I mean).

quote russ_watters I like the piston idea - and no, the mass of the piston can be as small as you want. Just off the top of your head, would it be possible to drive a piston--let's say vertically to get it to a position where it will have potential energy--with just 5-10 Joules of energy...

*Must clarify* So if the the volume of the box is 5 liters, that's all the helium I am going to have to work with. What I meant is that I will only have 5 liters of helium at 1 atmosphere. Am I making any sense?

specifics of the air pump situation This is what I am trying to do. I would like to extinguish a flame by replacing the oxygen that the flame consumes with an inert gas, in this case helium. Imagine a bucket turned over and placed on a stand. Now place a flame--a candle will be fine--in side...

I am looking for a manufacturer who will be able to custom design an unusually efficient air pump. The most efficient ones on the market right now (or at least the ones I have come across) require about 60 Joules to move just one liter of air. I need something that can do the same amount of...

In order to induce a voltage in a coil, is a magnet reqired to pass through the middle of the windings? So the real question is, if I have a tube-like or sleeve-like magnet, can I pass the windings through the inside of the magnet and still induce a current? Are both ways essentially the same...

What is the most efficient way to build a permanent magnet linear generator--AC or DC, it makes no difference. I'm working on a personal project but don't know where to start. I'm assuming that a generator similar to the one inside of a ForeverFlashlight is probably the best way to go, but I'm...

At what depth (roughly speaking) will gaseous oxygen dissolve (because of the surrounding pressure) into the water? Again, not asking for a precise figure. Thanks