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Hello. Application of electrical current for just a second from an electrode in a metal pot should destroy most if not all life in its water instantaneously. Why is such procedure not exploited ? At least I do not know of it being used to disinfect water Or is it ? The typical action is to boil the water; with huge amount of power used.

All of them !

Since day one I can remember as kid, Venus has been at about the same location by 8pm; by west and at the ~same elevation I have seen it along the years. Am I wrong? Isn't Venus a planet and by orbiting the sun it should gradually change its location ?

Hi. A program I have displays the elevation and azimuth of the sun in real time for a chosen location, updated every second. How can I tap into that data to perform other basic calculations, send to parallel port and display the results in another window simultaneously ? Am not good at all with compfusers...

Yes. That was it. ...And how can I obtain the azimuth and elevation vectors of the sun from the observer (sidereal?) time, date and coordinates ? Do I have to use some tables or there is a formula ?

Thanks - Should I have said 'algebraic sums' ? On your example of 0° and 358° 0°+ (-2°) = -2° ----> -2° ÷ 2 = -1° ----> ≠ 179°

Been a long time since the university years, no books on hand, and with terminology in another language, this may be hard to explain/ask... From a fixed point of view, say the tip of your tv antenna at the roof; -The street hydrant is at a fixed direction; elevation and azimuth. Do not care about the distance. -The sun is at another direction; elevation and azimuth. How is the (bisectriz) bisecting vector elevation and azimuth calculated ? Simply sums divided by 2 ?

Check if any of the Rolamite variants applies to your needs. Miguel

100. You may also click on "next" here : http://www.cybercom.net/~copters/mech/R22_panel.html Good one ,skeptic ! :D:D

The original post is perhaps related to this -whatever it is- : There is many tinkerers spending a lot of time building contraptions fed by obsession:

The New Element - Governmentium (Gv) Recent hurricanes and gasoline issues are proof of the existence of a new chemical element. Research has led to the discovery of the heaviest element yet known to science. The new element, Governmentium (Gv), has one neutron, 25 assistant neutrons, 88 deputy neutrons and 198 assistant deputy neutrons, giving it an atomic mass of 312. These 312 particles are held together by forces called morons, which are surrounded by vast quantities of lepton-like particles called peons. Since Governmentium has no electrons, it is inert; however, it can be detected, because it impedes every reaction with which it comes into contact. A minute amount of Governmentium can cause a reaction that would normally take less than a second to anytime from four days to four years to complete. Governmentium has a normal half-life of two-four years; It does not decay, but instead undergoes a reorganization in which a portion of the assistant neutrons and deputy neutrons exchange places. In fact, Governmentium's mass will actually increase over time, since each reorganization will cause more morons to become neutrons, forming isodopes. This characteristic of moron promotion leads some scientists to believe that Governmentium is formed whenever morons reach a critical concentration. This hypothetical quantity is referred to as critical morass. When catalyzed with money, Governmentium becomes Administratium (Ad), an element that radiates just as much energy as Governmentium, since it has half as many peons but twice as many morons.

Hi. What would be the vertical motion amplitude at 5 metres below surface for a seawave of 0,5m amplitude (1 metre peak to trough) at surface? There is some formulas at wiki but unsure how to translate them into what I want to know

Is all this stuff the same ? Washing soda = laundry soda = sal soda = scotch soda = soda crystals = sodium carbonate = Na2CO3 So many chemicals with multiple 'common' names If yes; here in synonyms, sodium compounds are named, but the formula does not contain sodium ???? http://www.hmdb.ca/metabolites/HMDB03538

Rust on the elements should not impair reception. Rust in the connections between elements and wiring will cause trouble.

Here: http://en.wikipedia.org/wiki/Piano_key_frequencies And should be the same for all instruments. Japanese and some oriental instruments are tuned at different frequencies; this site may be of particular interest for your signature: http://www.math.nus.edu.sg/aslaksen/gem-projects/maa/Early_Mathematics_in_Chinese_Musical_Scale/index.htm

No, and thanks for the links. Occurred to me that those fogger gadgets on novelty stores could make a carbureted / intaking fuel much more efficient, but have not tried/experimented with. To apply the concept to modern injected engines, some 'injector' device would have to be developed to repeatedly feed batches of fog fuel instead of the current spray. It may be simple when injecting into the intake valve area, but much harder to deliver directly into the pressurized combustion chamber. In some electronics forums, there is an ocassional request on how to home make water foggers for whatever use; and I forget now where there is data about frequency, type of convenient transducers and other details. Edited- added -> http://www.mainlandmart.com/foggers.html ( some kits to play with ) Miguel Merged post follows: Consecutive posts mergedA nice find : Miguel

Some devices used for delivering insecticides into open areas operate on "thermal" principle... How is that in detail ? I do not think it is just matter of heating-up the fluid under an air blower flow. Any light please? Example : http://www.dynafog.com/international/foggers/ Miguel

Ultrasonic 'fogger' devices would increase efficiency by 'atomizing' fuel better than any electric/magnetic field

µwave ovens do not vary their magnetron power; their duty cycle (time on and time off) can be step-selected in the medium/low/defrost setting.

Yes.- Is it Na6 P6 O18 ? and another type, mixing 42% Sodium carbonate 28% Sodium sulfate 23% Sodium citrate Do these make sense ? Any others ?

Hi. There is household products in liquid and in powder forms intended to be added to water, like in a laundry machine; but NOT to be used into water softening equipment. They are referred as 'salts' . What are these compounds ?

Not in powder, but a discarded electric water heater can have a lot left in its galvanic rod. Unscrew it and a Mg bar will come out. A Volkswagen air cooled engine block + transmission housing from the sixties is 97% Mg. Miguel

A water pump, probably piston driven, that left floating at the side of an anchored boat, would use small 10 cm crest-to-valley waves to pump water 5 metres high to a reservoir in the boat with a 3mm hose ? -Nothing attached to the boat hull, that would be easy- A submerged 'umbrella' and a float, connected by piston/cylinder assembly ? A hinged float ? The flow can be small, but could it be made to rise 5m ?

It would need a lot of force to push the router through material at 0 Watts or 0 rpm; so it has to be very important.

Hi. Am missing too many things with the growth of these crystals; can someone clarify details please ? As the molten bismuth is slowly cooling, do the crystals form embedded in the liquid, under the surface, as 'a diamond in a glass of water' ; Is that right ? Pouring out the molten metal leaves the solidified crystals in the pot, attached to portions of solidified metal ? How come the 'being poured out' molten metal does not leave particles and 'dew' attached to the crystals crevices ? They look soooo shiny and clean and smooth ! Do crystals grow only while submerged in their slightly hotter surrounding metal ? After the molten metal is drained, the crystals do not continue to grow, do they ? Does it make sense to say the longer the time waiting to pour out the molten metal, the larger the crystals would be ? But it is mandatory to drain before all becomes a solid piece, right ? ... Like 'the diamond being now captive in ice' If the melting pot had a cover, (with little air gap) there would be less/no formation of the grey layer on the surface because of less oxygen to produce it, is that right ? Is cooling preferred to start in the bottom of the core (if it was possible), and keep the pot walls hotter to achieve a better ideal draining? Edited: a nice site ----> http://www.amazingrust.com/Experiments/how_to/Bismuth_Crystals.html Thanks.