Externet
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Posts posted by Externet
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There is no institution that regulates, controls or rules the english language. So any effort hits a brick wall of public used to say whatever with nothing to obey.
Everyone forgot to say 'gasoline' or 'laboratory' and a thousand more; mail and male pronounced equal; being laziness and lacking care or respect for the language main causes.
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7 hours ago, jlivingstonsg said:
So they started floating bigger and bigger stones just by curiosity.
Now we are into larger and larger stones. Perhaps the answer is :
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19 hours ago, jlivingstonsg said:I will build a narrow fit channel, for any large megalithic stone,
Do not forget "any large" megalithic stone will have to be narrower than your narrow channel in order to fit in it, limiting its 'larginess' to something pole shaped like a broom stick floating in 100 litres of Hg. What is the use of a not really heavy stone stick deserving that elaborated transportation ? 🙄
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Editing Murphy's law' from above :
And never forget 'Murphy's law' : The nearest Hg mine will be a thousand kilometres from your megalythic stones, guarded by enemy armies that will want payment under the table and your first born, and the mine will deplete after 90 litres mined, short of your plans, will take much longer to transport the weight of the mercury so the megalythic moving contract will expire giving you zero income, nobody to buy the mercury or feed your hungry crew and transport donkeys.
It is life ! 😩
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There is a problem with the
3 hours ago, jlivingstonsg said:Just give me 100 liter of mercury and I will build a narrow fit channel,
Give me ? Go mining it yourself.
After all the effort and time spent prospecting, mining, refining it and digging, filling your channel, (that is 'if it floats') the megalithic stone will be already hundred of metres away by pushing it on older roller/wheeled methods. With no poisoned workers.
And never forget Murphy's law' The nearest Hg mine will be a thousand kilometres from your megalythic stones.
Do you know what is a 'narrow' channel filled with 100 litres of mercury ?
Is it 10cm x 10cm x 10 metres ? Do you know the volume and weight * of the megalithic stone that by floating it on mercury can be pushed by floating ?.
Do you realize that in order to move the megalithic stone 10 metre your channel has to be 20 metres long , to occupy the next 10 metres forward, and to empty the mercury already traveled 10 metres behind ?
*If you know after calculating, the weight and size of the megalithic stone that can fit on a 100 litre mercury filled narrow channel it may be around 5cm x 5cm x 5m. Can be moved on a shoulder of one person several kilometres in one day with no mercury channel contraption. Forget about your 'hundred of tonnes' on 100 litres Hg dream.
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1 hour ago, McReaperL24 said:
...you will regret all later...
Mister guardian, who is "you" ? Me or all of us ? Because I have not done anything to deserve your attitude that I will regret something. And what has to be done to avoid regretting whatever you mean ?
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The process I suggest is to place the speedometer in front of a fan for a couple of days. No heat, no cold, no chemicals, no wiping. With any hole to access a illumination light bulb opened, and come back with results.
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Good day.
Cut a strip of thin iron sheet (a coffee can after surgery by scissors) Say 25mm x 100mm x 0.5mm. Cover sharp edges with some vinyl-electrical tape.
Wind maaany turns of fine wire coil from left towards right and keep winding back towards the starting point. Both coil ends are at the same side. That is sort of a Rogowski coil, with a flexible metal core. -I think-
Now wrap the bendable strip coil thing onto an AC current carrying wire as the lower sketch.
Will the winding present some voltage proportional to the big wire current ?
-Ignore the decorative print at lower right-
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They should have pretty good access to equipment for tracking ufos, right ? Hope they release more videos from the ISS and past missions.
Together with the military and their sophisticated tracking and imaging satellites by radar and optics... If an UFO shows up at a certain location, can it be followed until reaches its destination with all that equipment hanging in orbits ? Would it make sense if they ever say "we lost its position" ? 🤥
Unsure if links did not stick or is it against rules to add video links here. Retrying :
www.youtube.com/watch?v=QMsgjP7EyNw
www.youtube.com/watch?v=CP1ByO1wzzc
www.youtube.com/watch?v=hPadIH5JmmM
Plese delete if improper
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Hi. Find this video very pretty. If there was an 'educational videos' section, it would fit well. Move to 'Experiments' or leave it here; but enjoy it !
---> https://www.youtube.com/watch?v=3AXupc7oE-g
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12 hours ago, Sensei said:
...you can't plug in disks formatted and configured for another system, and just plug them into another system...
Thank you. I read about that before. Hard drive transplants may be possible only to same brand/family compfusers... The Windows drives I tested were operating internally on that laptop years ago. They do not now with a USB adapter cable.
How does this work then ? :
Buying a drive that has never been in 'that' laptop before, sold with windows activated to be installed on any PC ? Is that a new or Win10 only thinghy ?
Is there some missing fine print like The receiving PC must have had before a Win10 OS ?
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Thanks. Operating from USB stick is not to consider. Has to be hard/SS drives.
Tried old Win98 and WinXP and Win7 hard drives and none booted. Blue screens and freezing. Which puts me to think if there is any truth in such 'special' cable that allows booting. The only unusual UASP thinghy found is ---> https://www.startech.com/en-us/hdd/usb3s2sat3cb
Perhaps do not know what terminology to search for...
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Thanks.
Pulled my own cable out of the spider webs, changed bios to boot from USB; plugged another Linux drive disabling the internal and booted just fine. Submitting this post with it. Yes, only 2.5" drives are in the game.
Next to try in a few minutes is a Windows OS drive. Will see... I do not know how to identify which of the 3 ports is USB 1, 2,3...🤔
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Greetings.
Went to a local computer repair shop to see if they had for sale any laptop with a side-removable/pluggable hard drive slot.
There are some older ideal candidates but they had none of those for sale. Intention is to select which operative system hard drive to plug/boot from for the task of the moment. Mostly Win11 or Linux.
The conversation degenerated into choices of
-having two internal hard drives,
-having one hard drive with two OS partitions,
-having two PCs,
-having two USB hard drives and plug the desired one,
-having only one 'special' USB-to-hard drive cable to connect, boot and work with the operative system drive of choice for the task of the moment.
[ USBport-----------------------cable----------------------internalharddrive nowasexternal ]
He showed and offered me to sell such 'very special' cable apt for booting and available only as a tool for technicians for ~$35. When I asked about speed performance with that 'special cable' instead of reaching the internal hard drivel bus, he said 'no difference'
What do you know about such 'special-for-booting cable ? looks like
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I always learned/read to be a blood-only characteristic. 😶
One random article of hundreds ---> https://pubmed.ncbi.nlm.nih.gov/7416157/
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Hi.
People with historic generations living at high altitudes capture more oxygen in their red blood cells.
Would a transfusion to a person without that extra affinity be transferred, at least temporarily ? Has it ever been tried to patients with deficient lung oxygenation ?
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Had to happen some day... reading not from a book, but "online" (whatever 'online' means). Found interesting enough to share, many subjects of all flavors to choose :
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I suspect the waveform on the oscilloscope will be like
And the speed of the magnet altering the amplitude, the strength of the magnet the time of the sweep, with other influences as gap dimension, size and shape of magnet, size and shape of bobbin, wire diameter, electrical load...
Which works as you describe with rectifier, large capacitor and led emitter.
To express a formula; I would need a new brain transplanted as the last one I got was refurbished and do not recommend such, does not work well.
Meanwhile, check ---> https://www.khanacademy.org/science/physics/magnetic-forces-and-magnetic-fields/magnetic-flux-faradays-law/a/what-is-faradays-law
and similar sites addressing mister Faraday
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Just hold it in, fellows, one more minute !
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Thanks.
Yes, I need a part made and wanted to have a sense of which material would be convenient. I do not know if hardness is what I have to look for.
'Deformability' plus 'resiliency' to act as a seal/gasket between surfaces would make more sense 🤔 Gathering several different materials to evaluate how they perform under 5000 psi after CNC machined.
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Was trying to find hardness figures for nylon, delrin, ABS, teflon, poliethylenes ... and got lost in too many scales Shore, Brinnell flavors, Vickers, Rockwell, and metric and not metric,
Is so much variety needed ? No consensus ? Very nasty to see so many and looking for the proper conversion. 😱
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Good day. Let me know if I learned it right :
The color of the lens is the color of a laser the goggle does NOT protect.
The color of the lens is the one the laser beam color can pass trough.
The protection from a laser is by reflecting, absorbing or blocking the beam and which of the three cannot be told by the color of the lens.
Goggles can protect against several laser wavelengths except the one of the lenses.
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Any 'healing gelatine' product ?
in Applied Chemistry
Posted
Greetings.
A couple of sewing needles or pins pressing onto lead solder blobs can provide decent contact to recharge a lithium cell. No mysteries there.
If the contraption will be used under sea water after recharged, and some sort of gel covers the contact blobs; discharging and corrosion could be avoided. What product can allow piercing to reach contact and when pins are retracted, be a decent insulating closure ? Am thinking of something like a silicone sealer that never cures, and does not dissolve in water... What would you suggest ?
Electrical source-----------------> gel solder blob