how to build your sprayer or atomizer powerful enough to throw dust up to 25 feet in short streams?
598566
Atomized fluids tend to have problems with air resistance which can slow the particles down rather quickly. Getting enough velocity to go with the very small mass is a real problem. \n\nOf course I'm now sure how you define atomized. A fire nozzle in the spray setting can go about 25 feet plus on a still day but that stream really isn't what I would call atomized.
710374
I work for a company called Furmanite. They are a large egineering company for power plants oil refineries etc.. We may have a solution for you.
869876
.  Such a gun would be difficult or impossible to make.  Friction with the other air would cause your project stream flow to become turbulent very quickly.  Special nozzle design could improve the length over which the high pressure flow held together, but getting the flow to hold together for 20 nozzle diameters would be something which has never yet been accomplished.  That would mean that a 1 inch diameter nozzle would produce a flow which was no longer tightly focused 20 inches from the gun.  And, to produce such a high pressure with any useful amount of air, the gun would have to have a very heavy walled pressure tank.  \n.  Where air charge guns are used to some effect, the inoculation of large groups of people, like in the Army, pressurized air is supplied by a hose from an air compressor or a pressurized air tank.  This is not a very portable system.
701662
Throw some live coals on 'em, and a pint or so of unleaded.  Stand nearby with a hose.  Make sure you do this away from things you care about.
611585
Get a clean 1 or 2 gallon metal container with a screw top cap. Put an ounce or two of hot water in it and place in hot sun without cap!\n\nPut the cap on tight and immediately place in a very cool area. Soon the metal container will be crushed because the hot water vapor created by the container being in the hot sun will condense back into liquid  leaving a partial vacuum in the sealed metal container. \n\nThe weight of the air outside the sealed container will crush it inwards.\n\nIf you do this please be careful!
227408
stick of dynamite.\n\nOk, I was just being silly, the other two ideas are good.\nA third way might be to create a whirlpool in the water.  I guess you could consider that a hole as well.
533071
www.sensorex.com/support/education/ORP_education.html\n\nwww.zentox.com/CleanStreams/ Ozone_Cooling_Tower_Systems_KSC.pdf\n\nNote the limitations !  It only works for clean waters.\n\nanrcatalog.ucdavis.edu/pdf/8149.pdf
757800
I'd just buy solid rocket fuel at hobby store. Blackpowder is just going to explode and really not burn.
217378
how about a golf outing or a car wash with a power sprayer that you can rent,
316237
light line or use a flyrodand throw with the wind
319479
all you want, just a little at a time. Try a concrete boom pump if you want any kind of volumne. A Putzmister, 52 meter can pump 200+ cu yards an hour.
548154
Use a water level:  \nTake a long piece of hosepipe, put a short length of clear tube in each end.  \nFill with water and with a friend lay the pipe along the ground with the open ends (with the clear tube pointing upwards).\nThe water in the clear tubes at each end will be at the same height.
438403
You can use air compression if you can't find fireworks.  Rig something to blow its top and throw some top cover into the air.  Sound effects will add to it.  The container could contain smoke that you've trapped in it to release.
701653
get 2 ) 2 liter soda bottles\nfill on with water.\ntape the empiy one to the full one ( opening to opening)\nturn them upside down and you have instant tornado in a bottle\nif that doesnt work shoot the bottles out at 200 mph that would be fun too
645770
What environment are you in?\n\nWind or hydro might be better options depending on local conditions. also depending on local skills and suppliers. see appropriate technology site
687874
This is really cool, but is a bit involved.  Get ahold of something that roates, a record player would be best, but you could probably rig something up.  Then you need some metal screen, like the kind on your windows.  Saturate a piece of cotton (a few cotton balls) with a solution of barium chloride, or some other metal halide salt and isopropyl alcohol.  Light it on fire and put the screen over it and start the rotation.  First of all, the flame will be a cool color depending on what metal you chose and it will create a really cool cyclone effect as the air coming in through the screen is swirled.  Really nice effect!
99103
throw it into space as high as you can, or just use that nitro