Externet

Thanks. Do not use soundwaves as the 'data' transmitted by the rod. (Yes, it is mechanical too) A mechanical motion instead. Push 1 cm in at this end, get 1 cm out at the other end of the unobtanium rod. Or, push 1 mm to mean '1', 2mm to mean '2', 3mm to mean '3' ... as a non-binary 'modulation'

Hello all. To maintain a 'fluent' conversation with a Martian colonization, the propagation delay would make it very different from what we are used here. Would the delays be different using lightwaves instead of radiowaves ? If a straight theoretical rod, (unbendable, uncompressible, unstretchable) extending between Mars and Earth is mechanically end-pushed to mean 'one' and pulled to mean 'zero' as method of archaic 'modulation'... What would be theoretically the transmission delay ?

<<The righteous pay for the sinners>> That is our modern way of life since the terrorist attacks, funneling good people into checkpoints and multiple other hurdles because the horrible actions of few. Back to fascist immigration ! And oust them, close borders. If good immigrants pay for the few sinners, well, that is our daily life now. Give them a taste of their own medicine, as killing as a sport is in their genes.

Hello all. Seldom visit other people houses; and in ocassions I have found dwellings filled with a huge excess of belongings. Read that one cause can be growing in needy families with little belongings and posing a 'revenge' later in life. Surprised lately, seeing a place with barely a path to walk around, the dining table and chairs fully unuseable as all was covered with items not belonging there, books, piles of clothing, toys... Piles of things I could not recognize being in use. The kitchen counters used as shelves with no food preparing space left at all, all closets full of items with no apparent use. Is this an education/habits/laziness/disorganized personalities or is there some other 'psycho' causes for the behavior ? A not-poor ex-boss had about sixteen century+ old self-playing-pianos buried among 20 years old piles of newspapers, magazines, invoices, mail... He had to do some circus tricks to move trough rooms to reach his bed. ¿? Am the fully opposite. Barely have a bit of furniture, nothing to stumble on. ¿? Lots of tools and electronics parts, but all confined to the basement.

Hi. Is there known cases of Alzheimer's disease cured ? By unexplained, spontaneous, oscure, unknown or known treatments ?

Perhaps confused from some retention. Seriously, for sure fecal retention causes headaches.

If magnetism did not exist, electrical generation would be confined to only electrostatic-friction generation methods as in several centuries ago experiments. Or perhaps collecting lightning bolts. If magnetism did not exist, would that early method of electrical generation somehow make its way to a useable, marketable, widely distributed and vital to modern life developments ?

I was surprised to see U.S. NPT threads in pipes and fittings several years ago in Europe. Are they still the norm or the market became metricated ?

Interesting ultrasimple modification, hoola. But I would inspect the gas heater for the presence of unused fittings/ports as the same tank (wall) may be used by factory in electrical applications. If there is a way to insert a heating element that will have intimate contact with the water inside, should provide better efficiency instead of wasting some bulbs heating in the flue cavity. And the inserted heater element can be of your wattage choice, or underdriven with half wave rectification, or variac to suit your demand. A drain port can also be a route of insertion of a heating element if no ports are found. Keep informing your progress. https://duckduckgo.com/?q=water+heater+element&t=canonical&iax=1&ia=images

-When using a solar heater to pre-heat the main heater inlet- If the pipes are of some flattened elastic tubing that will expand when freezing allowing 10% extra room; the bursting gets solved. Not a simple find in the building materials stores. Their durability and reliability from fatigue comes also to play. And must be ultraviolet/weather resistant I have no problem dealing with the freeze expansion now; I was just curious of how others would tackle the problem. My unsolved part is the blockage that ice in the solar heater pipes does to flow towards feeding the main heater inlet, and the extra insolation time needed to melt and restore flow. Plus an initial much colder ice-melt water the main heater has to heat up.

The 'best' is not in the market yet. It could some day be a computing tablet with a very slim detachable telephone handset on its side; Bluetooth or wired. Hope they make one soon... A pencil thin handset that recharges when nested in its tablet side 'craddle' I envision something like this that can double as carrying handle :

Thanks, DrP. Yes, it is poorly worded from my part. The pipes going to and coming from a roof solar water heater can be hooked in many configurations to a household piping, to obtain different applications as listed. Can anyone suggest a more convenient one ? Or, how would you hook it ? DrP: on a side note, am just curious of how that firm you dealt with, handled protection against freeze-bursting of copper pipes.

Hello. A roof mounted solar water heater can be used in several configurations, as -Preheating the electric/gas domestic water heater inlet -Providing direct warm water to use points -Work in parallel to electric/gas water heater -Fill an insulated reservoir with warm water for demand moments -With heat exchanger -Combinations of the above They have their good and their bad; unless a bunch of flow diverters/valves are implemented in the piping circuits. That brings complexity, cost and attention depending on season, time of day, temperature reached... Trouble with colder than utility supply in too cold weather/nights/early morning. What is in your opinion the best piping layout for 'average' latitudes ? No canadian colds, no equatorial tropics.

If the Bosphorus strait broke off -by earthquake or other- and flooded the now Black sea with Mediterranean waters thousands of years ago, the depth of that was-valley would have to be checked -about the current depth of the Black sea, reported at 2210 metres at one point- Localized event, not all the planet but fitting the 1000 feet bill. The ´myth´ part could be ´caused by endless rain´.

Your friend already professes the perfect religion : agnosticism.

Thanks again. Some extra head scratching... Being the distance from the parabola to the directrix equal than from the parabola to the focus, the first post line 'L' (concave side) does not qualify as directrix as I said in post #4. P1-Q1 is not equal to P1-F. But the total paths are the same lenght !.

Thanks. OK, then a directrix can be at the convex side or at the concave side as "L" in the graph; not only as typical tutorials with the directrix shown at the convex side. That was the point. To find in a parabolic antenna if wavefronts would interfere or even cancel with an uneven parabola surface and how 'unsmooth' are the limits for a given wavelenght. I guess that a half wavelength of the intended received signal as 'bump' or 'valley' in the parabola surface would contribute to signal cancellation. Is it right ? Edited: Am receiving 12GHz with an 'ironed' now-unobtanium parabola after tree limbs fall damaged some surfaces. 12GHz ---> ~ 2.5cm ----> half wavelength is 1.25 cm. Keeping surfaces as flat as possible under 1.25cm bumps and valleys is the aim, correct ? ----> http://s588.photobucket.com/user/Innernet/media/HFuWave.jpg.html?sort=3&o=92

Hi. By its definition, the distance from a parabola to its focus and directrix are the same. Well, this is not a directrix as I knew; it is at the opposite side : Question is -- are the lengths of the paths Q1 - P1 - F and Q2 - P2 - F and Q3 - P3 - F The same ?

All that information provided would bring worthless calculations without knowing wheel/tire diameter.

Never had coffee in my life. Do not know how they work. Suspect are very simple, but never played with one nor its guts. Any coffee maker tinkerers here that can suggest which type/model could be used to distill some alcohol, as a kitchen countertop appliance ? A dimmer to bring temperature down ? A mash holding section that can be cleaned ? Eliminating/adding few parts ? A quart per month will suffice. There is tricked water distillers/purifiers on the market that can distill ethanol, but the point is if a coffee maker can. Am not interested in legalese. All in the name of science !

Diagnose, diagnose, diagnose. Get one of these, they are cheap enough, and been around for decades : ----> http://www.ebay.com/sch/items/?_nkw=computer+post+card&_sacat=&_ex_kw=&_mPrRngCbx=1&_udlo=&_udhi=&_sop=12&_fpos=&_fspt=1&_sadis=&LH_CAds=&rmvSB=true Or, remove the hard drive, set aside unmolested and put another proven good hard drive (used, old or new) in the PC. Better if with Linux operative system (free) If failure persists or not, you discern being the hard drive/operative system, or the PC mainsomething/supply

There is no other kind of errors in accidents. Only human errors.

Device arrived to my mailbox. Instructions say to position near ceiling for 'natural' gas and near floor for LPG, whatever that be -liquified petroleum gas or liquified propane gas-. Installed. Done.

Cannot tell for smoke; but gas detectors use the Davy mesh pointed by John : And if the pendant detector is battery powered and kept charged by AC, fine. But if powered by AC alone, is not that 'cool' to need the light on for it to work. studiot : The leak being from an appliance or other seems not determined at the article ----> http://www.dailymail.co.uk/news/article-2142801/Cheltenham-house-gas-explosion-Elderly-woman-Betty-Hodgkiss-miraculously-escapes.html Not much remaining to perform an examination of cause. Perhaps a newer report gives clues.

You were assuming it was radiation powered, now being battery operated. Battery ? Probably not much; that may be why is AC powered... A little less significant as the reason houses have mandatory smoke detectors ? Only one house needed it among hundreds around.