Externet

Hi.

Got a Windows 10 laptop, an OS am not familiar with for the last 17 years.  Trying to ensure re-establish operation when something fails, in order to make a fixing compact disc, found the terms - rescue - install -  repair - recovery - reload - image - restore - reinstall - setup - backup  CDs.  

What does each does, or are they the same named different ?  Which ones do I need to burn to be safe in the future ?

Your opinion is always welcome.

I put these inside an oscilloscope to guess protecting contacts from becoming poorly conductive when the device becomes out of storage back into operation, as I did not  know better alternate compound :

Intended for automotive batteries.  Somehow now unreadable at link in a post above.  These are contacting the battery poles, but does not seem the touch is important; just its nearby presence matters.

The intention is not about coating contacts, it is about inhibiting corrosion on their nearby surfaces.   (Images borrowed from the web)

Missiles or rockets or whatever they are, hope are not armed.  Scary stuff.  Phiu ! 

Well, hope the warheads are not in another wagon... or in another train ! 😲

Could be much worse next time... 🙄

Thanks. 

Considering temperature at very high altitudes, affecting density.  How does it work ?

And other than helium, its convenience or not for 'ballooning' use is not only an atom/molecule size but its specific gravity in function of temperature too, right ?  So a larger molecule that wont leak trough the envelope + low density at low temperature is convenient ?

Hello.

A helium filled mylar balloon, loses pressure as the small He atoms sieves trough any envelope, as far as I understand.  Sent aloft, when the He pressure inside the balloon equals the atmospheric, the balloon stops rising, as far as I understand.

At certain altitude the differential pressures of gas filling the balloon and the atmospheric outside its envelope, nearly equalizes, reducing the He leak.  But there is still some weight of the balloon.  Do helium balloons last much, much longer aloft at high altitudes than at low altitudes or there is a factor am not considering ?

On 2/5/2023 at 7:33 AM, toucana said:

One stated reason for the initial reluctance of the US Airforce to shoot down the Chinese balloon spotted over Montana was the risk of debris falling onto populated areas below.

Because they wanted the show of $hooting a missile to explode instead of plain bullets to deflate slowly until landing softly from slow leaks...

Greetings. 

Since high school chemistry, learned the formulas of compounds always using whole numbers.

What is this way of subscript ? --->   ...showed that GdSi₂Ge₂ and LaFe_11.384Mn_0.356Si_1.26H_1.52 had TEWIs that were always lower...

Never seen before; can anyone explain ?   (text copied from a website)

Hi.

What determines a big branch off a tree cannot be rooted as a small branch can  ?  Or can it ?  Never heard of being done; every time they use a 6 inch twig instead of a 6 feet long branch.   Not being done does not mean to me that cannot be done.

Better jump to time stamp 14:20 at ---> https://www.youtube.com/watch?v=nXVCGk-P-cg

In the above video; the branch portion shown could be instead, a complete branch to the end; could it ?

Seen stumps sprouting several times.  Can a branch be 'attached' there instead ?

In other words... cut off a tree flush to soil.  Take a branch off the downed tree.  Graft it to a root still in the soil.  What to expect ?

Good tutorial link, thank you.

Good reading filled with an overdose of links.  It will make you crazy or give you light.  Or both :

---> http://amasci.com/miscon/whatis.html

Hello.   A weather radar operates at location R and emits to/receives and displays bounced signals from snowing points S.  Beyond the snowing there is rain or sleet at E or more snow in the same direction.

R----------------------S---SS---------SSS--------EEEE---E-EE--------SSS------ >

If the radar signal bounces from the precipitation back 'reporting' the signal; how are the beyond places detected, if the outgoing signal is severely attenuated/bounced/impeded after  crossing trough large distances with precipitation ?

If relevant, take each - as a mile.

Good day.

Someone had milk in doubt of being apt for consumption, as 'expired' or kept a while unrefrigerated.  Dumped on a vegetable garden soil.

Someone had extra granulated plain sugar and spread it on the soil at a vegetable garden.

Someone had a flour that did not like and spread it on a vegetable garden soil.

Someone had yogurt, or used cooking oil, or orange juice and decided to spread it on the soil instead of the garbage can.

What benefit can the plants get from such ?  What harm can it cause to the plants ?  -nothing composted-

Greetings.

These photoluminescence compounds absorb the energy of photons? by raising their energy level, then emit light on the energy decay.  -I think-

About intensity; the more energetic the exposure, the larger the emission return.

Color... is violet/ultraviolet the light that energizes it the most ?

Now; what about the time ?  Exposing the photoluminescent material to light, I would say becomes 'charged' at the speed of light' .  What if the exposure time is not 1 second but 1 minute ?  What changes when light is released ?  In other words, the exposure time affects the emission in intensity or duration or both ?  ...and why ? 

Is the light emitted repeatedly 'recycled' internally by the compound (as its own decaying emission is re-absorbed and re-emitted)?

Good day.

Trying to visit a website typing only the domain and .com;  the address appears as ww12. ------ domain.com and shows blank contents.

What is happening ?  Seen before a ww1 long ago but was able to access it.

Thank you. 

No intentions of coating/spraying components; just wondering if the "presence effect" of such volatile compound-impregnated paper or cloth inside electronics instruments would be of help to  prevent trouble. 

The something-impregnated felt torus that perform very well on automotive batteries; do those work by nearby "presence" or by contact with the terminals ?

Hi.

The manganese oxide becomes what after a discarded common battery is fully spent ?

Hi. 

Once upon a time, saw silver utensils had a paper sheet in their box claiming the utensils would not need cleaning if such paper was kept in their proximity.  Some 'magical' compound impregnated the paper 

My oscilloscopes are seeing little exercising of the buttons, switches, levers, controls lately... which I believe are mostly made of brass/bronze/copper.

What compound could I keep inside electronic equipment that will prevent contacts to become tarnished and perform less than ideal, impregnating something ?   I guess the electronic instruments would have to be covered to avoid air flow in them for such 'magic' compound to be more effective, right ?

2 minutes ago, CharonY said:

unless you sequence individual cells

Thank you.  Does it mean individual cells of the same tissue/organ ?

4 minutes ago, CharonY said:

these won't show up in your final reads.

That I do not understand,  Would you please re-phrase ?

Hello.

If a DNA sequence is taken from some tissue of a creature -say liver- is compared to another tissue -say kidney- of the same;  are they identical ?  Should they be ?

Ten years ago...

Thanks. 

I always thought that unevenness in temperature would not be more than ~1C in the water in a boiling water pot.  99C to 100C  and much has to do if covered.  If cooking temperature is so critical, am done with it.  And have my suspicion that in a larger amount of water boiling, temperature gradient would show greater than in a small vessel.

OK.  Leaving the pasta aside for another post,  how to achieve the chestnuts buttery soft ?

Hi.  Have a good '23

Uneven results, some stay hard, some are enjoyable soft.

What differs?  The chestnut 'quality' itself, or soaking, or its size, or the time boiling, the depth of scaring, or else ?    Read the pointy ones are edible and the rounded ends are not

Some recipes call for boiling in an extra large pot with a huge amount of water compared with the volume of nuts in.  I do not get what is the effect*    Your expertise to obtain then very buttery soft, please ?

*( as to boil pasta, why suggested in huge amounts of water and not simply submerged ? )

Can a UFO get tangled into a weather balloon ?

Fear + ignorance = religion = that thing zillions of people pray about daily for the last 5000 years with zero point zero results nor a single response ever and will continue like that.