Engineering

Kohler the company produce a simplistic perpendicular designed outlet, flush from the wall, which produces a crystal clear jet of water for use in the domestic bathroom environment: https://www.faucet.com/kohler-k-923-polished-chrome-modern-wall-or-ceiling-mount-bath-filler-with-95-inch-2-4-cm-orifice-from/f231619 I would like to know how much control could be had from a static system regarding where the flow would finish? I understand that there are very strict principles to be observed in order to achieve the Laminar effect and it doesn't seem like there would be much room for manoeuvre with this design i.e. only on and off? What if the water were a widened sh…

I apologise in advance for any of my ignorance. my question is could you use gyroscopes in counter acting orientation to either make a space anchor or use it to detect gravitational variation? I understand that it would use a lot of energy input for fairly small output but could it be done? it would have to be done in a very low or almost zero gravity environment As gyroscopes like to stay in place on it axis when spinning, using the end of the axis as a resistance force. Could these be counter balanced in such a way to provide stability of movement in space where nothing can be physically touched. not sure I’m explaining it right, so ple…

There are a number of things for which "bacteria-laden, but not salty" water are still useful (farming, spraying on forest fires, etc...) and in some places, like California, far more of the state's clean, treated tapwater goes to such uses than to direct ingestion of said water. Conversely, I presume there are things for which saltwater could be useful (bathing, spraying oneself with it as an alternative to air conditioning) that bacteria-laden water would not. So what I'm wondering is... would it be practical to have 2 or 3 different sets of water infrastructure, for 2 or 3 distinct purposes, as an alternative to one single one? For i…

I know that solenoids are basically electro magnets with a coil around an iron core. So, what makes a solenoid push or retact harder, higher volts or amps, or both (watts)? and if not both then what do i do to make one push really really hard? Also, how little electricity do piezos produce if i just use ambient noise to generate electricity from it?

Hi. Planning to extend coverage of the back yard with ~40mm high gravel for an area automobiles park. Already did a section using about 25 mm sized gravel; the quarry has finer sizes, like 12 and 8 mm. Which should provide better traction? There is a mild slope, like 5 degrees. Gravel goes on top of polyethilene film placed over the soil (to prevent weeds from poking trough).

Mostly for fun, I would like to try annealing some small steel pieces (say, half inch size or less). Tips? What would be most easily obtainable tools to do it? What kind of torch should be enough - or should I build a wire heater? They say: soak it at correct (red-heat?) temperature for some time (seconds, minutes?) and then slowly (how slowly?) cool it down. I guess such small peaces would cool to quickly in air? Some internet guys also say that you should not heat it too much (orange). I don't understand how can this be a problem?

Hi, I began working at a new firm recently where I am managing the chemical waste. Before I got here it was mentioned to me that a liquid had pooled in a containment bin. The cleaned it up, but formed again later, so I cleaned it up. Its a coated metal cabinet (exposed steels getting fairly rusted) containing HCl, HBr, HF, H2SO4, etc pretty standard stuff. It also contained H2O2, which supposedly vents oxygen, has anyone ever had this problem or can think of a reason? Thanks,

Hi. Can you suggest which jobs of what branches will have less chance to be wiped out by artificial intelligence robots ? Please do not mention politician... 😧

Hii. Today i just saw a videos where it says that, we found a planet where the Translation and Rotation are syncronized so it means that at one side is allways day and the other is allways night (like our moon that is always facing the earth) so i was thinking how a city in the night side would work and i loved it, and after i thought that it would be possible to do something similar at the day side as well artificially created day and / or night environments note: DaN means Day and Night hypothetically speaking I believe that there would be places where it would always be during the day and places where DaN cycles would be created. such as: apar…

The Hydrogen powered jet Hi My names Darren Cronin I live in bristol and want to help with climate change. if you think there might be something in this idea please pass it on. The one problem with a hydrogen powered jet is the fuel (hydrogen) would have to be stored in a large pressurised or cryogenic tank inside the aircraft utilising the space required for passengers where as traditional aircraft store jet fuel in their wings. My proposal is a radical idea that traditionalists might scoff at but hear me out. We have to come up with an alternative to jet fuel, the environmental costs are building! Hydrogen is the obvious choice as it burns even more e…

Anyone know a formula for how big a hole can be yet still keep water suspended in an otherwise sealed vessel, factoring in surface tension and atmospheric pressure?

Hi everybody! Last time I saw an instrument needing excellent mechanical stability (a tunnel effect microscope) it was built of metal. But microscope mirrors, which have similar needs, are made of a special ceramic. One known example is zerodur by Schott. So could such instruments be made of zerodur or similar? Besides the much better expansion coefficient, I ignore the properties and fabrication abilities. Mirrors are ground but make big efforts to cast the near-net shape, so deep grinding is unclear. The cost is an interrogation as mirrors take several months to cool down. Chemical etching woud be nice. Assembly is unclear, electric sealing would be …

I always noticed that deodorant sticks become uneven after being used for a while. It doesn't bother me, but has always made me curious as to what exactly is the scientific process that does something so bizarre yet so interesting. I've always found nature's effects on modern technology as well as humanity itself to be an interesting study.

Consider a system with fluid 'A' of sp.gravity 's1' is having certain leakage 'Q1' into the surrounding through geometrical imperfections(pores). Now if the fluid is replaced with another fluid 'B' of sp.gravity 's2' ,considering all the other system parameters like pressure,temperature etc remain the same,how will the new leakage change through the same geometrical imperfections(pores)

Hello you all! Magnetorquers serve to control the orientation of smaller satellites in low-Earth orbit. A set of big air coils, or small coils on soft magnetic rods, create a torque in the geomagnetic field. I propose instead to use an aggregate of magnetic materials and tilt it versus the geomagnetic field when wanting a torque. One aggegate serves for all directions, gaining mass over fixed rods with varied orientations. Creating a field but stronger than Earth's one suffices to orient the permanent magnet, and this takes far less power than usual magnetorquers. A big Leo satellite can be 6m*3m*3m and 15t with 56*103kg*m2 inertia. If willing to supp…

Hi. Has any manufacturer come up with some 3D copier yet ?

Greetings. Seen a couple of machines that melt shredded plastics in used hot oil for the process of recycling. Seems there is not much mixing as plastics being heavier, stay submerged by the bottom of the vessel in a nearly liquified state layer. Seems the oil is just the media to convey the heat source thoroughly. What would differ choosing used motor oil, used vegetable oil, used transmission fluid, used hydraulic oil ? Would any be more convenient than other ?

scientist make a AI that can draw and paint... Well it looks like we have AI system that can draw and paint. https://www.christies.com/features/A-collaboration-between-two-artists-one-human-one-a-machine-9332-1.aspx Well it looks like AI that can draw and paint is coming out faster than we thought.

What could be done in order to store liquid methane at room temperature? Possibly some "super-additives" which are capable increase boiling point dramatically?

Hi. Do these F1 racing engines use a coolant thermostat ? In the liquid path; not louvers at the air flow path.

I have come to accept that when an induction motor receives lower voltage than it was designed for it will pull higher current. This doesn't make any sense to me, but I have seen it stated enough times that I'm willing to believe it. Everywhere I look provides total nonsense explanations. They say things like "the motor will draw more current in an attempt to maintain its torque" as though the motor has agency and chooses how much current it draws, or "in order to provide the same power" as though the motor cares how much power it provides. The version that would make sense to me is you have a resistance, both in the actual windings, and in magnetic impedance(?), and…

I'm not here to knock Boeing. They have achieved fabulous stuff in the past. Great planes, breaking new ground, setting records. But there is no way I'm ever going to take off in a 737 Max. From what I can glean from the two crashes that grounded the fleet, the design is cobble up, and needs everything to be right, in order to keep flying. I want a plane that nearly flies itself, not one that needs special software, and top quality piloting just to keep it from crashing. I believe that the whole problem is due to moving the engines forward, and enlarging the intakes, in an effort to compete with the equivalent Airbus A320. This apparently affects th…

1. How much of an effect does a magnetic field do to electricity, i mean bare electricity, as in, its not in a wire or something. 2. Do the poles of a magnet affect the movement of electrons eg: attracting electrons and repelling. (I know very well how motors and generators work, no need to lecture me about how e- flows through a wire coz thats not what Im trying to point out.) 3. Will it be possible to make a magnet attract electrons from one of it's pole, throught the magnet, and releasing/repelling through the other end? 4. Does north and south poles affect negative and positive? 5. Please discuss this: https://arstechnica-com.cdn.ampproject.org/v/s/ar…

Does anyone have a good design for a paramotor? And are there any good alternatives to a flying vehicle that can also carry other humans other than planes and helicopters (That is also as cheap to build)?

Hello everybody! Frequency filters lets signals within the passband through and attenuate everything in the stopband, for instance noise or an adjacent communication channel. Much theory exists for them, works nicely. The stopband attenuation can be big, and the "selectivity", the ratio of the nearest frequencies of the stopband to the passband surprisingly small. But as the frequency response gets sharper, the time response gets slower and bumpier. No wonder, since a Fourier transform links them, like the diffraction rings of a lens, or the noise created by jpeg compression, or Delta(t) and Delta(E) for a particle. I'll consider only lowpass filters here. …