Externet

Yes, sunny in both cases. The hat use in the discussion link above is understood to provide shade, but wrapping the head in a black rag has to fry the brains. http://picasaweb.google.com/TusharPhotos/Ca_stanford/photo#5100235315459422610 Is it about insulating above 37 Celsius ambient to avoid the intake of more heat; is it about ventilating(evaporation) with minimal dressing under 37 Celsius ambient to release heat ? Something does not click... Is there some customary factor -not fashion- involved ? Central american natives wear nearly nothing on similar climate... Could it be that humidity plays a major role ? Miguel

As shown on the picture, it is a goofy audio analyzer that analyzes nothing as shows no vertical nor horizontal scales. It is supposed to tell the frequencies and the signal level on each, plus peaks reached.

Seen desert dwellers in Sahara heat to wear heavy clothing. Seen other tribes nearly naked because of hot climate. What is the rationale on each that makes the choice? How does each case work ?

The rate of beer consumption to balance the amount of exercise to keep the beer cold points the camper to better carry dry ice in a polyestirene insulator box, it will be lighter than carrying the human powered generating contraption plus the refrigerator. Many years ago I saw an invention of a chemical jacket for cans or jars that was activated by pulling a string or something, instantly cooling its core. The modern habit of 'wanting' a drink to be cold is a psychologic 'desire' that contributes little of nothing to body hydration compared to not cooled drinks. If you insist, can carry an absorption refrigerator and feed its heat with sun and lenses, -or fire-. A strong mule may barely be enough.

Hi. I use canned chemicals to 'freeze' electronics as one tool for troubleshooting; and would like to know if there is any canned product that works by heating instead of using a heat gun. Has to be electrically non-conductive, capable of reaching about 80 Celsius.

It is surprising, car makers have improved their radio suppliers specifications a great deal since the seventies; perhaps you drive in a difficult propagation zone. The antenna trimming on older car radios is for the AM band only. Modern ones are fitted with circuits of automatic gain, cheap but work. The FM band has no user adjustment and generic modern radios are built for cheap price rather than sensitivity and selectivity. Miguel

----Ovation ! ----

There is no such thing as healthy hair. Hair is dead, very dead, no matter what shampoo advertisers say. Pretty, shiny, smooth, whatever else yes, but healthy, nope.

... A "soft" ?... I have recorded a dozen of CD with Ubuntu > Applications > Sound & Video > Sound recorder; and then 'Serpentine Audio CD creator' But do not know the way to do the same with videos on the web.

Hi Perhaps half an hour after a meal, when whatever is going on in the stomach, the digestion process is well advanced at a certain point of progress. Eating again at that moment mixes partially digested food with food in need of the entire process. What happens in that situation? ; how does the stomach recognizes what to 'continue' digesting and what to 'start' digesting ? Will the process start again and the already semi-processed food gets another 'treatment' ? Miguel

Kind of verbal terminology, thankGod not used in typing!, the stupidity of inserting a dozen 'you know' per minute in a conversation. It cracks me up when used responding to a question.:D:D What do some have in their brains ?

Hi. Some supermarket gymnastics... That $16 per pound fancy 'deli' cheese, or the plain $3 per pound simple Monterey jack ? The $9.99 NY steak or the rump something meat at $ 1.25 per pound... The $0.99 catfish or the fancy $ 8.99 yellowtail... The plain 99cent bread against the same size $3.50 weird-named loaf ? Are we selecting nutritional value or pleasures? What is the nutritional difference among similar foods, is it worth the absurd $ ? Miguel

Yes, rising from depth will aid expansion and buoyancy. Happy with that. The bursting part would not be a problem. Bigger balloon.

Thanks. Nothing to do with anything, I have no interest in refining nor hydrogen as itself. I want to produce gases of any kind from seawater electrolysis to create buoyancy that will bring a device in the bottom of the sea to surface after a period of time. Powered by a seawater voltaic cell, probably graphite and magnesium. The whatever gases Cl, H, O will have no use other than the volume they grow up to in a bladder. Or, if any easily obtainable material produces gas in contact with seawater.

Thanks for responding. I know too little about this... The intention is to electrolytically produce any gases from seawater using voltage generated by electrodes immersed in it as a voltaic cell; perhaps carbon and magnesium. Or, if two dissimilar (connected?) elements immersed in seawater can themselves generate bubbling.

Are the "electromotive series" and the "electronegativity" the same tables with different reference points ? Are both Pauling's ? What is carbon electromotive series value ?

Hi all. A voltaic cell with a carbon rod and aluminium rod electrodes generates some potential in a container with seawater. If that voltage is applied to other two platinum electrodes in the same electrolyte in the same container, will they generate some gases ?

Catalán, español, english, some italiano, some portugues.

I would forbid reproduction for those who cannot provide decent education, decent nutrition and decent healthy lives to their children. Forbidding politicians from getting wealthy could help too.

Which would you say are the most interesting threads you remember in these forums along the years ? Miguel

¿¿?? I do not get that at the SFN heading. Usually a blank space.

Hi. Reviving this thread in case some other ideas come up, now with this approach: Imagine a piece of pvc pipe, vertical, sealed at the bottom. Pour some chemical compound in it. Put some thin layer, membrane, or dividing separator on top of the compound. Put an activator on top of the separator membrane. Secure a deflated balloon on top of the pipe. Tailored to ~24 hours, the activator should dissolve the separator and the two chemicals mix, producing gas that will inflate the balloon a few litres bringing an item to surface from the bottom of the sea. Help with simple chemicals, please ? Miguel

Perhaps it is not 'greatness', but being a very nice laxative when allergy to Windows develops, by whatever be the reasons to each user. On my side, what bothers me the most is the intrusion perception Windows gives me. Linux offers me peace of mind, the feel of being out of the crowd. Ubuntu support on forums is great with the exceptions when finding a helper who seems to be more into answering quickly instead of providing detailed guidance. The learning curve had and has hurdles at least for me, Linux found initially to be very confusing after years with mister Gates. Now I just bypass what I do not understand and use what I know. Learning by 'osmosis' helps with time. Miguel

What about a metal foil at the bottom of a tub/pond as one electrode, submerged in ONE liquid with floating whiskers/wires ? (instead of the two nonmiscible PN junction liquids)

Benefit ? Just a shot in the air, as may be possible to make such thing at home with materials easier to make than cristalline silicon and thin film technologies. The transfer part, if an electrode is at the bottom of the tub, under a couple of millimeters of fluid A, and electrode hairs immersed in fluid B layer above. The collectors cannot be a deterrent ! Put the thinking hats on !