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Jon Custer

 Discussion on question by TopMath: Ca…

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Jon Custer
Jun 27 13:47
As you note, the bulb keeps lit as the wave propagates to it. A nice way to keep a fixed voltage going to an experiment- have coax long enough that the power supply doesn’t see any change until after the interesting stuff is done. We used to use several hundred feet (about a nanosecond per foot).
 

 Discussion on question by user12262: …

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Jon Custer
May 24 10:25
Not referenced in en.wikipedia.org/wiki/Hafele%E2%80%93Keating_experiment
 

 Discussion on question by Kendall: Ca…

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Jon Custer
Apr 8 22:12
If it is actually used in the literature (and a quick Google search indicates that it is), then call it that. And you can provide a short definition and literature reference in a footnote at the bottom of the slide. I really don't see this as swearing.
 

 Discussion on question by NikS: Stand…

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Jon Custer
Mar 23 19:36
All those beautiful wave functions apply to hydrogen-like single electron atoms. Describing what happens when adding another electron requires an entire book by Bethe and Salpeter.
 

 Discussion on question by Lundin: Did…

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Jon Custer
Feb 28 18:14
Look at it differently: what was the need to define the behavior in the first place? Given there were different behaviors in the wild and no good reason to insist on something at the risk of limiting choices later, just leave it undefined. Or, put yet again differently, the behavior was defined to be undefined.
 

 Discussion on question by Schilive: W…

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Jon Custer
Feb 24 14:42
The VT100 came out in 1978.
 

 Discussion on question by diddyDANK: …

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Jon Custer
Feb 14 20:51
This is a question for your advisor and your IRB. You seem to want/need clarification on intent and they are the ones to do that.
 

 Discussion on question by Franck Dern…

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Jon Custer
Feb 7 01:18
The engineering school I went to offered non-credit classes in the machine shop. That is an instructor. Same for teaching first aid in outdoor programs. This graphic is being intentionally misleading to push an agenda.
Jon Custer
Feb 7 01:18
Those numbers make no sense at all in terms of any university that I know of. It seems to me that actual professors are not included in 'instructional staff'.
 

 Discussion on question by ElmoVanKiel…

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Jon Custer
Feb 2 22:58
Diffraction of large entities such as Buckyballs has been observed. The wave/particle duality is a robust theory of reality.
 

 Discussion on question by Jack: Does …

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Jon Custer
Jan 6 13:31
The event horizon is not ‘infinite’ gravity.
 

 Discussion on question by Miss Unders…

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Jon Custer
Nov 16, 2024 08:12
@MissUnderstands - your profile on Physics currently shows that you have asked 10 questions, perhaps more if you deleted some.
 

 Discussion on answer by RMDman: Giant…

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Jon Custer
Nov 5, 2024 05:31
Given the large wet stripe down the wall I would also check that there isn’t a clog in the gutter drain up top. Causing all that water to flow down the wall when it rains.
 

 Discussion on question by Patrick Har…

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Jon Custer
Nov 1, 2024 19:51
True. They are related…
Jon Custer
Nov 1, 2024 19:51
Manhattan Project reactors such as the Chicago Pile and Hanford used natural un-enriched uranium.
 

 Discussion on question by Luna: How t…

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Jon Custer
Oct 30, 2024 15:27
To be fair, starting a second essay with no feedback is a losing situation for the students. Perhaps the second should have been assigned after returning the first, and then pick up the pace?
 

 Discussion on question by Joshua Fran…

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Jon Custer
Oct 30, 2024 04:49
@JoshuaFrank - another tip - if your day of driving ends near a large city, get through the city that evening and get a hotel on the far side. That way you avoid morning rush hour traffic since you are now heading out of town, not in and through it.
Jon Custer
Oct 30, 2024 04:49
As for the singular choke point - from experience storms that hit Boise also hit the whole corridor down to Salt Lake City. One time, driving Albuquerque to Corvallis with a storm hitting Boise/Salt Lake, I did go through Nevada, but that was west on I-40, up to Vegas then Winnamucca, then a very lovely drive up to Burns and then across on US20. Beautiful but slow.
Jon Custer
Oct 30, 2024 04:49
@JoshuaFrank - That is a 15-16 hour day including stops. Out west speed limits are 75 (or 80 on I-80 across Wyoming). Drive 3-4 hours, get gas, pee, grab a bite to eat, repeat until done. Sleep 8 hours. Repeat until there. This is solo. The trick is to not stop too much, which is mostly not drinking too much liquid too soon in a block of driving - extra stops eat into the average speed quickly.
Jon Custer
Oct 30, 2024 04:49
I think 600 miles per day is definitely on the low side, but then I’m happy driving closer to 1000 miles per day. Lots of open highways out west. The ten day forecast will be pretty reasonable. Worst case is a storm hitting Salt Lake City and Boise which is the choke point for you.
 

 Discussion on question by somethinggo…

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Jon Custer
Oct 29, 2024 15:53
Clearly the answer is yes, since most people have not one an olympiad. And people who are clever problem solvers in olympiads may not have other talents that apply better to research.
 

 Discussion on question by lolloriffic…

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Jon Custer
Oct 27, 2024 04:23
Because that is the way the universe is. Light has a particular speed in vacuum. Using human-defined units of meters and seconds, that is what that speed turns out to be.
 

 Discussion on question by lolloriffic…

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Jon Custer
Oct 24, 2024 18:15
Because that is the way the universe is. Light has a particular speed in vacuum. Using human-defined units of meters and seconds, that is what that speed turns out to be.
 

 Discussion on question by Von: Fixing…

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Jon Custer
Oct 22, 2024 09:27
And each of those tools has a good use case I suspect. So, as the engineering manager what single tool would you use for the project? And what single tech stack?
Jon Custer
Oct 22, 2024 09:27
How long has the project been going? How many changes/upgrades/new features have been made over that time? How much funding was ever available to rewrite the whole thing to get it down to one programming language and one tech stack? Your Alice knows all the technical debt and where the bodies are buried in the code, your juniors have no clue. Asking the juniors to rewrite will likely result in a complete mess without guidance from Alice. Good luck.
Jon Custer
Oct 22, 2024 09:27
Seems that you found out quite clearly that the "10x" engineer is, indeed, a thing. And there are very few options on "patching up" the situation. Further, since you will likely take the blame for falloff in productivity, particularly once Alice leaves, you may well need a contingency plan as well.
 

 Discussion on question by SimpleStude…

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Jon Custer
Oct 10, 2024 03:05
They may have grants, but that funding is likely to support graduate students. Grant money has restrictions on what it can be used for.
 

 Discussion on question by Ima: My ins…

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Jon Custer
Oct 6, 2024 21:03
@AzorAhai-him- - the policy is kind of crazy. One might think that four Physical Review Letters would count for something. But even then, for the OP, there are usually multiple applicable journals to consider, even if they are only the letter/full length variations on a theme.
 

 Discussion on question by Eggy: Is it…

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Jon Custer
Sep 30, 2024 16:00
Correcting after administering should be right out. The respondents replied to a specifically worded question. Much like SE broadly does not allow editing a question so that it invalidates an existing answer. If the survey author is embarrassed by their survey, well, that is on them in the first place. Trying to cover it up is not ethical.
 

 Discussion on question by phd_cyber_c…

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Jon Custer
Jul 26, 2024 18:16
If your postdoc goes to plan, your application gets better and better. So keep at it.
 

 Discussion on answer by Dale M: Can m…

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Jon Custer
Jul 22, 2024 02:17
Indeed, looking at my parent's latest 24 hour care bill, I'd say your siblings owe you big time (like $30,000 per month).
 

 Discussion on question by user164831:…

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Jon Custer
Jun 1, 2024 18:44
@Wrzlprmft - my experience was in the Netherlands. Once I learned Dutch the group was quite happy they could talk in Dutch with no impact on me. I did that well before the 2 year mark, so I never let them tire of chatting in English. Sure, their English was very good, but it still took more effort on their part than to talk Dutch. Multiply by the number of people at the table and my effort to learn Dutch made everyone's life easier. And it made my life much easier in everything outside of work. At the very least, demonstrating that you are working to fit in will help.
Jon Custer
Jun 1, 2024 18:44
My main suggestion would be that you dedicate significant effort to learning German. Whether it is a 'requirement' or not, it is common courtesy to learn the language of the country you are in. I did a postdoc in a foreign country. Sure, all science was done in English. But, yes, coffee and lunch were in the local language. So I learned it. That helped in all kinds of ways outside of work as well.
 

 Discussion on answer by T.E.D.: Is th…

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Jon Custer
May 30, 2024 12:59
This answer directly answers the OP question in their title. That there are other questions raised is beside the point.
 

 Discussion on question by IAG: Can an…

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Jon Custer
Apr 27, 2024 20:18
Note that distilling things down to their essence is a skill that needs to be practiced.
 

 Discussion on question by Evan Carrol…

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Jon Custer
Apr 15, 2024 13:46
Hezbollah is directed by Iran. Pretending their actions are separate from Iran’s is not warranted.
Jon Custer
Apr 15, 2024 13:46
en.m.wikipedia.org/wiki/…
 

 Discussion on question by terdon: Is …

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Jon Custer
Apr 1, 2024 23:40
What is the status of faxed or digital signatures in Europe? Seems either would have been faster and easier.
 

 Discussion on question by user366312:…

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Jon Custer
Mar 29, 2024 15:36
What "should be" and what "actually is" are different things in different places to different people.
 

 Discussion on question by Nonalcoholi…

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Jon Custer
Mar 21, 2024 01:27
I sat in on a few engineering classes last week. Everyone had their laptops out and were doing class stuff - the classroom was set up for them, and required such usage for what was being covered that day.
 

 Discussion on question by user366312:…

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Jon Custer
Feb 27, 2024 16:16
I've lost track of all the languages I've used over the decades. After the first few they all have their quirks but generally all look alike (well, except APL...). Become proficient with multiple languages, proficient enough to do what you need to. Don't be a language snob - they all have their use cases.
 

 Discussion on question by Neal Conroy…

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Jon Custer
Feb 26, 2024 09:28
Given that the wavelength of visible light is much much larger than the (ill-defined) size of an atom, the wave passes by everything. Only the electrons have energy levels that can interact with visible light.
 

 Discussion on question by Bilbo: Is t…

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Jon Custer
Feb 25, 2024 06:38
So nobody will ever have any idea of what they actually accomplished?
Jon Custer
Feb 25, 2024 06:38
What will you do when someone asks to change tiers in the middle of the semester?
 

 Discussion on answer by Philip Kendal…

Imported from a comment discussion on workplace.stackexchange....
Jon Custer
Feb 10, 2024 06:03
@cdkMoose - exactly how does announcing one is leaving voluntarily mess with succession planning? Either somebody replaces them or not, how the hiring process plays out has no bearing on the fact that the OP is leaving.
Jon Custer
Feb 10, 2024 06:03
When HR wants to interfere with common decency I stop listening to HR. Being told to leave and not say anything is just not right. I'd happily point that out to everyone in HR and up the chain should they choose to call me out after announcing I'm leaving.
 

 Discussion on question by Hilmar: How…

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Jon Custer
Feb 7, 2024 05:29
@reirab - ah, memories of using various busy Amex offices around Europe. (Made even better by being a college student with a gold Amex card - when that meant something in the early 80's - and being hassled for being in the "wrong" line until I pulled it out.) Historically Amex fully expected you to be traveling far and wide and didn't want anything getting in your way of using their card overseas.
Jon Custer
Feb 7, 2024 05:29
@Hilmar - As of last June, both my Chase and Citi administered Visa cards were happy to have me call them and I used them successfully on a trip to France. Same with my local credit union Visa and ATM cards.
Jon Custer
Feb 7, 2024 05:29
I call my card hotlines before leaving and tell them which countries I’m going to. Never had a problem.
 

 Discussion on question by GeneralOcto…

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Jon Custer
Jan 5, 2024 01:31
Regardless of who is "right" or "wrong" here (and not unlikely a mixture of both), if you "take him apart" the next time you will land wholly on the "wrong" side.