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Andrew Morton

 Discussion on answer by Xander Hender…

Imported from a comment discussion on cooking.stackexchange.co...
Andrew Morton
Jul 20 19:02
Contributor jmk commented elsewhere that "If using citric acid keep in mind not to heat up the kettle. If using citric acid hot, calciumcitrate can form that a scale. That‘s the reason organic descalers use a mix of citric, lactic and malic acid." Which implies that calcium citrate is more difficult to remove than the limescale you're trying to get rid of. So, use it with very warm water, say 50 °C, but not hot.
 

 Discussion on question by Anebo: Is t…

Imported from a comment discussion on superuser.com/questions/...
Andrew Morton
Jul 18 16:38
@Anebo When you say "a similar system", one dissimilarity would have been the number of memory channels, which depends on the exact model of CPU. More memory channels gives more memory bandwidth. But without knowledge of the "similar system", we can't say for sure.
 

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Andrew Morton
Apr 19 16:23
Lol. Any sign of progress on the useful things? I suppose I checked out the FAQs on SOCVR first as I very occasionally participate there, and thought there was nothing available for other SE sites. Now I know better.
Andrew Morton
Apr 19 16:21
@JourneymanGeek I don't have the side bar enabled, so I would have had to have explored that part of the footer menu :(
 

 Discussion between controlgroup and A…

Imported from a comment discussion on physics.stackexchange.co...
Andrew Morton
Feb 22 20:53
Wow, thank you for caring to give an explanation :) Maybe I will understand it properly in conjunction with more information by my usual slow osmosis process.
Andrew Morton
Feb 22 20:34
(2) Just seen your edit-to-add. Ooh, the photon's energy /not/ being an invariant quantity is something different from what I thought. What is the photon's energy a function of? Loosely speaking, as I do not know the correct terms, is it something like a contour integral? (And we're way outside of what I understand and this point.)
Andrew Morton
Feb 22 20:34
(1) The term "coordinate time" is beyond my knowledge, and after skimming over the Wikipedia article on the subject, is that a cause precedes effect principle? /...
Andrew Morton
Feb 22 20:20
Hi :)
Andrew Morton
Feb 22 20:19
Does time apply to photons?
Andrew Morton
Feb 22 20:19
So, although a photon does not experience time, how does it "know" that an object it will encounter will "see" it at some frequency?
Andrew Morton
Feb 22 20:19
And where did the energy come from? Does the observer slow down?
Andrew Morton
Feb 22 20:19
Is there an associated explanation for the change in energy (E=hf)?
 

 Discussion on question by Timo: PWM c…

Imported from a comment discussion on electronics.stackexchang...
Andrew Morton
Feb 13 18:01
Of course, the new PWM would need to have its duty cycle varied depending on, say, a temperature. Is there a need for the print head fan(s) to be anything other than on or off? Also, how much current will be going through your MOSFET? This data sheet says Rds(on) at 5 V gate voltage could be up to 7.5 Ω, so you need to make sure the heat dissipation isn't too much. (I'm still not an electronics engineer.)
Andrew Morton
Feb 13 18:01
The circuit diagram says 40 Hz (which should be OK for a 2-pin fan) but the oscilloscope says 1 kHz. Maybe you could edit the firmware to change the PWM frequency and feed that directly to the 10 Ω input of your circuit. Then the circuitry shown in the first image won't be used. And I'm not sure the cap-and-resistor snubber is needed. I am not an electronics engineer.
 

 Discussion on answer by gerrit: In a …

Imported from a comment discussion on travel.stackexchange.com...
Andrew Morton
Mar 28, 2024 14:31
Well, hopefully, the business owner will see the error of their ways, give the past tips to the staff, and obey the law in future.
 

 Discussion on question by Izza: Can I…

Imported from a comment discussion on travel.stackexchange.com...
Andrew Morton
Mar 27, 2024 19:26
You might have local lawyers who will look after it for you in their safe for a small fee.
 

 Discussion on question by AJ_Smoothie…

Imported from a comment discussion on electronics.stackexchang...
Andrew Morton
Mar 27, 2024 16:16
If you want it solderless, you can get little sockets that you solder into the board, for example: digikey.co.uk/en/products/detail/mill-max-manufacturing-corp./…
 

 Discussion on answer by No Name: Is t…

Imported from a comment discussion on english.stackexchange.co...
Andrew Morton
Mar 18, 2024 02:31
Dake is a surname, if you count proper nouns as words. (You had to know someone would check...)
 

 Discussion on question by J Collins: …

Imported from a comment discussion on electronics.stackexchang...
Andrew Morton
Mar 2, 2024 18:21
I assume using mercury is not an option?
 

 Discussion on question by vonjd: Troj…

Imported from a comment discussion on superuser.com/questions/...
Andrew Morton
Feb 13, 2024 08:11
If you really wanted to, you could try using MoveFile to move the file somewhere you can access it on the next reboot and then submit it to, say, virustotal.com for analysis.
 

 Discussion on question by EJoshuaS - …

Imported from a comment discussion on diy.stackexchange.com/qu...
Andrew Morton
Jan 26, 2024 15:27
Can you string a wire—to hang the bird feeders from—between the posts and add baffles to the wire?
 

 Discussion on question by Tyrone Hirt…

Imported from a comment discussion on superuser.com/questions/...
Andrew Morton
Jan 3, 2024 19:50
@TyroneHirt (Sorry, I may never see your replies as these comments have been moved to "chat".)
Andrew Morton
Jan 3, 2024 18:58
And once the DRAM capacity is exceeded, you will see the oscillating behaviour again anyway.
Andrew Morton
Jan 3, 2024 18:57
Does CrystalDiskMark give reasonable speeds for the drives?
Andrew Morton
Jan 3, 2024 18:54
@TyroneHirt And as 1NN commented, there is a possibility that they are fake drives - did you get them from a reputable supplier, or perhaps somewhere like eBay or AliExpress?
Andrew Morton
Jan 3, 2024 18:51
@TyroneHirt Another possible reason for the SSD going slow is that it is overheating. Exactly which model of Orico drive enclosure are you using? Does it feel hot to the touch a couple of minutes into the test? If not, it should - maybe there is a thermal interface pad missing.
Andrew Morton
Jan 3, 2024 18:46
@TyroneHirt The easy way is to have more patience ;) Did doing a TRIM make any difference?
Andrew Morton
Jan 3, 2024 18:46
@TyroneHirt No, PrimoCache will not help with this, from what I can see. It is intended for HDDs, or perhaps network drives.
Andrew Morton
Jan 3, 2024 18:46
@TyroneHirt Or you may be able to right-click on the drive in Explorer, choose "Properties", choose the "Tools" tab, click "Optimise", select one of the external drives, then click the "Optimise" button. I don't know if it can send a TRIM command over USB - it may also depend on the enclosure.
Andrew Morton
Jan 3, 2024 18:46
@TyroneHirt Maybe the drives need to run the TRIM command, which tells them to tidy up their storage so they can run at full speed again. From a quick search, you may be able to use the "Optimize" option in Corsair SSD Toolbox.
Andrew Morton
Jan 3, 2024 18:46
@TyroneHirt The MP600 Core uses something called QLC NAND to store the data. Writing to QLC is slower than writing to other types of NAND, so what the drive controller can do is treat a portion of the storage as SLC NAND, which is faster to write to, but it will only use a relatively small portion in that way. Once that portion is full, the drive controller has to transfer it to the "normal" QLC part, during which time the drive is much slower. However, that does not explain why Explorer copies at more than 3x the speed of robocopy.
 

 Discussion on answer by Raffzahn: Why…

Imported from a comment discussion on retrocomputing.stackexch...
Andrew Morton
Dec 15, 2023 15:44
@JackAidley Try three more whiskys and see which case is easier to read :o
 

 Discussion on question by The Floatin…

Imported from a comment discussion on superuser.com/questions/...
Andrew Morton
Nov 26, 2023 19:06
@TheFloatingBrain Do not touch the pins in an LGA socket: they are delicate and you may need a microscope to fix them if they are disturbed. Or a new motherboard.
 

 Discussion on answer by Kilisi: Is wo…

Imported from a comment discussion on workplace.stackexchange....
Andrew Morton
Oct 21, 2023 18:25
@Kilisi Once safety equipment is needed, isn't the issue who should pay for the safety equipment?
 

 Discussion on question by asdlh2: Int…

Imported from a comment discussion on superuser.com/questions/...
Andrew Morton
Sep 29, 2023 15:26
@asdlh2 If there is a component which has gone bad, it can be affected by temperature. Or indeed, a faulty solder joint could cause the problem: imagine that the parts inside expand with the heat, then what is a usable connection when cold could become a spark gap when warmed up. Sparks give off electromagnetic interference.
Andrew Morton
Sep 28, 2023 20:37
@asdlh2 It appears that you need a new mains adapter. It is possible for components inside it to go bad. If you plug in the mains adapter without connecting it to the laptop, does it still cause the problem? If so, bear in mind that it will also be causing Wi-Fi problems for everyone else nearby.
Andrew Morton
Sep 28, 2023 20:06
@asdlh2 If the mains adapter has a separate mains lead part, you could try swapping that. Also, examine the cable carefully for any anomalies, especially near the ends - it is possible for a wire to become stretched and become a dodgy connection.
Andrew Morton
Sep 28, 2023 19:47
@asdlh2 (Strictly speaking, the thing you put between the mains and your laptop is a mains adapter (a.k.a AC/DC convertor). The actual charger circuitry is in the battery module.)
Andrew Morton
Sep 28, 2023 19:47
@asdlh2 Do you have a different charger you can try? Have you tried the charger in a different mains socket? (It is possible that the mains socket has dodgy wiring, which would be shown by a different socket not causing the problem, but don't mess with it—that's your landlord's responsibilty.)
Andrew Morton
Sep 28, 2023 19:47
@asdlh2 It is also possible that something, for example a power adapter, is causing interference. If you switch off everything connected to the mains in your place (preferably not anyone else's things unless you ask them first), does the Wi-Fi to your laptop work reliably?
Andrew Morton
Sep 28, 2023 19:47
@asdlh2 Other people will know better than me how to solve the problem, but it is slightly possible that everyone else is using the 5 GHz band, so if you connect to the 2.4 GHz band you might find it works better. It will, however, be slower. If you get your own Wi-Fi router, it will only add to the problem. Could you ask the other people in your new place how good their Wi-Fi is?
Andrew Morton
Sep 28, 2023 19:47
@asdlh2 Could you test it with a network cable instead of Wi-Fi? I am wondering if there are too many other people using Wi-Fi near you and the poor performance happens more often than you notice.
Andrew Morton
Sep 28, 2023 19:47
@asdlh2 As a crude check, you could start Task Manager (ctrl+shift+esc), select the "performance" tab (a bit like a heartbeat pulse icon), select "Ethernet". Is the graph going up and down, or is it a straight line at the maximum? Or you could look on the processes tab under the "Network" column and see if anything has a high percentage - if it does, don't kill it but let us know the name of the process.
Andrew Morton
Sep 28, 2023 19:47
(1) "I tried disabling firewall didn't help." - If you've done that before then it is time to run a thorough antivirus scan. (2) Do the games you run happen to have "anti-cheat" things with them, which might be overly intrusive?
 

 Discussion on question by Louis: Is t…

Imported from a comment discussion on workplace.stackexchange....
Andrew Morton
Sep 17, 2023 13:27
"Boss, if they find out the truth, you, as a director, could go to jail. Is it worth spending $40,000 to get a pen test and avoid that?"
 

 Discussion on question by CodeJunkie:…

Imported from a comment discussion on workplace.stackexchange....
Andrew Morton
Jul 28, 2023 17:32
If the other worker won't learn async, could you use background workers instead?
 

 Discussion between SKGadi and jsotola

Imported from a comment discussion on electronics.stackexchang...
Andrew Morton
Jul 24, 2023 18:19
If the phase voltage is oscillating in a sine wave relative to neutral, what would the earth voltage have to do for the 'scope to not show a sine wave?
 

 Discussion on answer by Sandro: Shoul…

Imported from a comment discussion on parenting.stackexchange....
Andrew Morton
May 27, 2023 11:19
It might be worth pointing out that some older microwave magnetrons use beryllium oxide, so any magnetrons with pink ceramic should not be investigated because there is a danger of beryllium poisoning. How dangerous is a magnetron?
 

 Discussion on question by 44yu5h: Mov…

Imported from a comment discussion on electronics.stackexchang...
Andrew Morton
May 25, 2023 20:29
@44yu5h If you get some (from a supermarket/large grocery shop, maybe) and it isn't suitable, you can still use it in cooking :)
Andrew Morton
May 25, 2023 20:29
@44yu5h You can get thick aluminium foil, in at least the UK it is sometimes called turkey foil (maybe around that time of year), otherwise "extra strong" foil. And one side is mirror-smooth as long as you unroll it carefully, or do you mean an optical-quality mirror?