can you vacuum seal water without the water being sucked through also?
207992
Freeze it first, then vac seal with "Food Saver" machine
533462
strange situation.. anyway why you dont use thermal tape ,, its strong enough to prevent any leak
291100
I like your question.  Nobody has ever considered this!  Well, if you submerge the green pepper  into the water long enough, you will see air bubbles forming on the outside of it.  Now, how did the air get into the pepper in the first place?  Same idea of respiration.  The pepper itself is not air tight.  Only to our eyes it is tight.  The green pepper actually still breathes letting air pass in and out at such a slow rate.  If the pepper could only absorb air, then when you cut open it, it would pop like a balloon.  So, I guess the air is constantly travelling in and out at a slow rate!
287763
I thing you are referring to surface tension pulling the water up the tube. The water can't be pulled past the end of the tube since there is no tube after that to pull on. In other words the water doesn't know the tube is too short until it gets to the end.
135659
Poppet valve would be your likely answer.\n\nCheck valve is also acceptable.
619373
You know how when you suck on a straw you get your drink to move up through the straw? This happens because by sucking, you are creating a partial vacuum on one side of the straw, and the atmospheric pressure on the liquid on the other side, now having nothing to counter it, pushes the liquid up through the straw. But no matter how much you suck, you cannot reduce the pressure on your side of the straw to less than zero (i.e. a complete vacuum), and as such there is a maximum height to which you can raise a column of water - that height depends solely on the atmospheric pressure on the other side of the straw. This means that you can construct a barometer simply by having a glass tube immersed vertically in some liquid, and pumping out all the air on one side of the tube, and then sealing the tube - the height of the liquid then gives you the ambient air pressure. Water, however, is not very dense, and so your barometer would have to be very large if it used water. To get around this problem, scientists use Mercury, which is a much denser liquid, to measure the pressure. A pressure of 1 mm Hg is simply a pressure that can support a column of Mercury 1 mm high under this arrangement.
151152
The diffusion of gas across a membrane requires that the membrane be wet.  If the wet membrane were on the surface the animal would quickly dry out.  Since the exchange is located deep in a lung there is opportunity for the water to be recovered before exhaling.
406655
I sent an email regarding this to you earlier.\nNo, do not drain the pool completely. Drain only to just below the level of the returns as they are typically the lowest part of the plumbing system. \n There's a lot more to closing a pool than just draining it down a bit. If you want a pool closing guide I have typed up, mail me back.\n\nEdit: As requested, princess, here's the generic guide.\nIdeally, your closing starts a week before you actually get down to putting the cover on. Get your water balanced chemically first. That week allows you to do this.\nOn closing day: Vac the pool and drain it to just below the pool returns. They are typically the lowest point in the system. When drained to that point, add in a winterizing chemical kit (most pool shops sell them), they typically contain an algaecide, shock and sequestering agent . Remove ladders and rails. You may remove the diving board if you wish, or cover it in opaque plastic sheet and secure it. If you totally remove it,  place something over the diving board jig bolts and lube those bolts or tape with duct tape that jut up through the deck. This can prevent stubbed toes and saves the jig bolts from corrosion.You're done at the pool for the moment. Head over to your pool equipment. If this is a sand filtered pool, you ought to have done a backwash, during the draining process, to clean out the filter. If a D.E. pool, then the same applies to clean off the elements. You can remove them later for a thorough cleaning. If a cartridge filter, just remove the cartridge and clean at your leisure.\nFor all filter types, there will be a drain plug, remove it and keep it out.\nOver to the pump. All inground pumps will have 2 plugs, one midway back on one side and one directly in front.All above ground pumps have a single one, located at the front, under the impellor housing. Remove them and place them in the pump basket along with your filter drain plug. It's a nice , safe place, that you won't lose them in, as you'll leave the pump basket right where it is. This next part all depends on your pool plumbing, you'll have to decide the best route as they are all plumbed differently and the many different ways to blow out lines would be a book unto itself. You'll need to tap into both the return and the suction lines. Typically for the returns, you disconnect a line between your filter and heater (if equipped) and for the suction, you can go directly in from the front of the pump, without disconnecting anything. Doing it this way, will allow you to blow all the water out of the heater, pool returns, any waterfall or fountain(if equipped) or attached spa. Same goes for the suction line for skimmer, in wall suction for a pool cleaner and attached spa suctions (if equipped). You can rent a line blower from a rent all or your local pool shop, or you can use a medium sized shop vac that has a blow feature. The shop vac hose is actually the same diameter as the inside diameter of most pool plumbing (1 1/2 inch) so it makes a good fit. Blow out the lines, until you only see a tiny dribble at the pool, both suction and return. Charge the line with plumber's antifreeze (not automotive) and blow that through to the pool, for all lines. When you see the dye colour of the antifreeze at the pool, it means that the antifreeze protection is sufficient. Plug with your telflon taped winter plugs, all lines ending at the pool. Put something squishable (empty chemical containers or an old partially filled inner tube) into the skimmer to protect it from freeze damage. Remove the pressure guages from the filter and put them in the pump basket with your equipment plugs.\nThere are 3 basic types of pool heater, electric, gas and solar. You don't mention which you have, so I'll assume if you do have one, it's gas. Open the drain cocks on both sides of the heater header (you blew out all the water , when doing the lines, should just be a little anti freeze tha
147523
it is possible, depends on how heavy ur leakage is and how far the sharks are from you, but thats just the thing.. you never kno until they BITE...
86533
No you can not. THe air particles would desolve it way faster. THere is no way to preserve it.
424554
The problem is not the weight of the water, it's the drag of the fluid. Unless you can find some magic way to eliminate the drag in a fluid like water which is so much more than that of a gas, you will be stuck with lower speeds. Even if you had some "magic" bubble around the sub, you would still need to displace the liquid to move the bubble.
300085
isn't liquid suppose to get in the thing?\n\nit sounds like an air dry outside will help if anything will
50361
The moisture is a conduit to an electrical charge....The machine the Visa card was used on had the electicity...the normal moisture in an exhaled breath produced the small amount of fluid to be a conduit providing a connection .....NORMAL!  Getting rid of the dust as stated above is also...very true and very normal.  Not bizzare at all.
381424
search the university of Hawaii aquaculture studies grant.plastic liners for grow-out ponds,padelwheel oxygenation and propeller oxygenation are good,but using air bubbles to raise ground water will reduce or eliminate nutrients in water column but is the most economic way to move volume well water to surface ditch line.just use a compressor to draw off well surface head water,add a little compressed air at botom of cistern,and,vuala..,volume irrigation water plastic lining also has good potential in agricultural lots.and negative atmosphere fruit tree grow out produces an accelerated yield.
23941
Yes you could. Free hydrogen (H2) is rare in the atmosphere though, so you would have to buy industrially obtained hydrogen (which mostly comes from natural gas) which is expensive so its always cheaper to drill a water well or something. But yes, if you want to combine oxygen and hydrogen, and light it with a match, you will get water. Good luck trying to contain it after it goes from gas to the combustion product of hydrogen and oxygen, which will be water vapor (steam).
282597
compressures dryer then tanks is the best way but you can put the tanks before the dryer you will just have to drain your tanks daily to let the water out of them
483049
You might want to consider using a double wall, with air in between the inner and outer wall. If I remember correctly, air is a very poor heat conductor. Of course, like someone suggested, vacuum would be better, but that's a bit of a stretch. Air would probably work almost as good. The walls should be made out of thermo-insulants (ebonite, I believe)  and/or high heat capacity materials. Covering the outside of the box in aluminium foil would help, if the heat was generated by a source of light (like the sun), but would useless if the heat came from somehwere else. Likewise, painting the box in black would help the water inside stay warm. Covering the inside of the box  with aluminium is as useless as having knees on a fish. Unless you decide you want a lightbulb in the box, for whatever purpose, I'd say it's a waste of time and materials.