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Hi. A drop of vinegar tells if magnesium or aluminium. Is there a simple way to tell if it is bronze or brass ?

Thanks, studiot. Forget the ferrite. being plain iron; the field lines are also there. Yeeeeeah ! Did I 'invent' the zeropole concept ? Should it be more valuable than a monopole ? 🙄 An iron magnet with no poles. Wow ! What would it be good for ?

Thanks. Can it be said there is no poles in these ? -Images borrowed from the web-

Hi. If all magnets and electromagnets form/have N and S poles, and field 'lines' go from one to the other. As I was told. An electromagnet rod core has the pole areas as : A ferrite or iron toroid, windings on it : Where are the magnetic poles located ? 🤨 Yes, direct current applied.

Any guidance to produce rubber parts with a tridimensional printer ? If gets too complex, perhaps some hard silicone instead ? Or room temperature vulcanizing RTV ? Would ultraviolet curing be ineludible ? What rubberish materials cure with UV ? Can 3D printers carve material out instead of pouring ? As to create a mold ? Is it just matter of putting a 'negative' image file to 'print' a mold ? Any capable hobby machine that you know of in the market ? As to start from a rubber block ? Yes, too many questions... tackle as many as you want.

Hi. The 'progress' is a couple of factories pedaling up manufacturing near silicon valley and another in China and Europe, from what I read. I do not know yet the consequences of catching fire in electric vehicles compared to lithium, and trying to extinguish with water...

Another one, with is expectations and hurdles. ---> https://sodiumbatteryhub.com/2025/05/07/aeson-power-presents-sodium-battery-innovation-at-ees-europe-2025/

Good morning mister president. Happy 100th day. We, the people, cannot fight nor reverse the caprices of your administration. Be aware you neither will be able to avoid the reversal of your actions by the next administration in four? years. It is the plowing-the-river situation. All the changes done now will affect -we the people- with no chance to return to 'normal' , leaving an irreversible wound. Whatever you do, do it properly without harming we the people. Am in the last days of my life, but my children deserve at least a decent life as I had. Do not spoil it as by then you and I will be under 6 feet where crying will not help restoring anything.

Thank you. Been sporadically following if there was advances during the last ~10 years somewhere else since ojose.com and scirus.com went belly up. The simplistic first rotary drawing that cannot find now was very convincing of having a good potential; gadolinium exposed to magnetism, then moved to a place to dissipate the heat and later moved to a place without the magnetic field to absorb heat.

Greetings. Has anyone here already; or what would it take to put together a rustic, magnetocaloric refrigerator using gadolinium, even if by manual cranking ? Gadolinium exposed to a magnetic field warms up; while In that state; does reversing the magnetic polarity changes anything, or removal of the field is needed ? Moving Gd into a magnetic field takes kinetic energy ? Removing it from a magnetic field also uses kinetic energy ?

The bible followers and devotees that follow their religious beliefs are then, interpreting and learning wrong/different meanings of the scriptures from a defunct language from ~4000+years ago and from ~2000 years ago. Setting aside the modern meaning; if worth accepting the phrase Who are "us" above ? God and who else ? Who are "our" above ? God and who else ? And God is humanoid ? Any witnesses of that ? And who heard God saying that above speaking to no one ? The above phrase by about page one; followed by hundred of pages of zillion more asseverations constituting the foundations of a religion. Can any hyper educated professional theologist doctorate master explain at least that first Genesis 1-26 ? The priests during my 12 year duration catholic school -with mandatory daily mass- never touched it.

Can anyone confirm; I have the same doubt in different languages... Do humans look like God ? What is "our" image ? Who are 'our' ? God "said" : who heard that ? "Likeness" ?

Hi. What compounds are added while manufacturing wall paint that determine if results are glossy or flat finish ?

Good morning mister president of the U.S. Perhaps steel, aluminium, petroleum, automobiles can bear tariffs as can be made in the U.S. But electronics, toys, clothing, shoes, everyday life gadgets cannot. Because cannot be manufactured in USA. Perhaps you just noticed and engaged the reverse gear ? No, cannot be manufactured in USA. Because corporations and CEOs and shareholders want (and get) quadruple+ profits having those products made overseas where workers do not cost to the company five thousand dollars an hour at the emergency room or hospital plus a $400 weekly medicine. Somehow I thought that you may had known that well before with all your business expertise.

Greetings. Has anyone seen, had, known about a wind-up toy car of the sixties like the one I gave away in the seventies to a deserving kid and now as an old fart would like to have again ? Was a German Schuco brand, Mercedes Benz, convertible, green, wind-up, with a 2cm working stick shift between the seats, 2 or 3 gears, reverse, steerable, ~16cm, metal but cannot remember if diecast or tin, never seen an equal one for sale. The nearest looks image borrowed from the web (in other color) is: It is not these 'gullwings' :

Good day. Applying DC to electrodes in saline water; what disassociates / separates / deposits first on them, as voltage rises ? The hydrogen and oxygen; or chlorine and sodium ? What determines which go first ? Salt is already ions in suspension, right ? Or becomes hypochlorite / hypochlorous acid ?

Good morning mister president of the U.S. Please remember daily, that very few citizens have the spending power you have.

Hi. Everyone asked had a favorite response. Steam; water with vinegar; or with detergent, or with alcohol, or with ammonia, or paint thinner, or any hot fluid... Applying newspaper onto the wetted surface (to 'seal' moisture much longer) or thin plastic film for the same purpose... Assuming all the glues used are the same; what makes more chemical sense ? Or is just matter of dissolving it and not to react with the glue ?

Thank you sir. I remember reading in several places about insecticidal properties. Being correct or not = ? With the typical imprecisions of naming different products the same and naming same products differently... One of them is

Denmark announced to soon accept trading Groenland with Florida, Mar-a-Lago included or not.

Thank you, sir. Managed to implement/add the green launching icon, displays at the top left corner instead of the expected bottom row but can live with it :

Listening to Sinatra + Jobim.

Hi. Installed? Whatsapp to new drive with Ubuntu 24.04 on my laptop and it is functional. Find no launch icon, have not closed the tab until solving. On previous hard drive it did show at the bottom of screen. Does not show listed in 'installed' applications ! I have only Brave browser working perfect, cannot find how to implement the launcher (or is it favorites?). Help in wording for the unskilled, please. I followed this to install : If it shows "Remove from favorites" is because it is already in the favorites list, right ? Well, cannot see it at the bottom.

Good day. I was reading about a "Bordeaux mixture" for prevention of fungus and damaging insects for plants and trees. It is a simple water solution to spray hydrated lime + liquid soap, supposed to not deterr/harm pollinators if applied before blooming. What is your opinion instead of spraying such mixture; spraying only the liquid soap onto foliage and branches to make a sticky layer and dusting windward with the hydrated lime powder after with the hope of hydrated lime sticking better to the plants (until next rain ?) -Or, a better approach you may have heard of- ?

Thanks, gentlemen. Can see the validity of the discussion related to the teachings. Was Sicily and not Corsica, and Spain involved. I have no idea why I posted here; it was intended for the lounge. Brain farting too often. Please move as apropiate.