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General Discussion & Feedback => Just Chat! => Topic started by: talanum1 on 25/05/2021 19:30:46

Title: Isn't this More Correct?
Post by: talanum1 on 25/05/2021 19:30:46
They say the lagrangian has a term: ∑i qx'i Ai.

Shouldn't it read: ∑i,j qx'i Aj with i ≠ j, since particle i is moving in the field created by particle j?

Do you just sum similarly if there are 3 particles?
Title: Re: Isn't this More Correct?
Post by: talanum1 on 26/05/2021 10:26:55
I mean: ∑i xikAil

where i is components of the vectors and k and l are worldline numbers.
Title: Re: Isn't this More Correct?
Post by: Zer0 on 21/04/2023 20:08:08
Did you find out the Answer?
Title: Re: Isn't this More Correct?
Post by: Bored chemist on 22/04/2023 00:56:55
Quote from: Zer0 on 21/04/2023 20:08:08
Did you find out the Answer?
Yes, he did.
He found out that his question had no validity.
If it had, it's fair to assume that someone would have said something at the time.
Title: Re: Isn't this More Correct?
Post by: Zer0 on 23/04/2023 21:49:26
Follow-up question...

Why is TNS unable to Retain New Members?

I've observed this Alot.

From somewhere or somehow, folks end up coming in here, but very very few stay back.
Most simply Disappear!

What can WE All do Collectively to Prevent this trend from Continuing?
This Brain Drain needs to be plugged ASAP!
Title: Re: Isn't this More Correct?
Post by: Petrochemicals on 23/04/2023 22:37:45
Quote from: Zer0 on 23/04/2023 21:49:26
Follow-up question...

Why is TNS unable to Retain New Members?

I've observed this Alot.

From somewhere or somehow, folks end up coming in here, but very very few stay back.
Most simply Disappear!

What can WE All do Collectively to Prevent this trend from Continuing?
This Brain Drain needs to be plugged ASAP!
Because it's a honest open forum that doesn't play favourite's and people find that harsh, it isn't ruled by moderators opinions but by rules that are applied by moderators. It has free speech. Fortunately it's content is mostly maths and science based, these are not popular amongst the egotistical as its content is not something that can be opinionated or posture upon, it's quite hard to take argument with reason.

It's amazing how few people are banned really, the spammers are about the only ones who get banned outright.
Title: Re: Isn't this More Correct?
Post by: Zer0 on 25/04/2023 21:48:09
I made a grave Mistake.
I Regret Not forming this OP as a New Thread.
Could a MOD be Kind & Help?
(WoW@Petro...Very Well said!)
Title: Re: Isn't this More Correct?
Post by: Eternal Student on 26/04/2023 13:10:09
Hi.

(Move this with @Zer0 's recent post,   if that does get moved).

Quote from: Zer0 on 23/04/2023 21:49:26
Why is TNS unable to Retain New Members?
   I don't know.   I can speculate and talk about my own views / experience,  that is all:
1.    Some people did just want a question answered.   Once that's done they have no reason to remain.
2.   People have many other things to do and writing something on a computer takes a long time compared to just talking to someone in real life.

Quote from: Zer0 on 23/04/2023 21:49:26
From somewhere or somehow, folks end up coming in here, but very very few stay back.
    Actually I think a lot more could be done to encourage new users.   One of the first things I did when I stumbled upon this site was to look around at the existing threads and discussions.  There was a large amount of very low quality posts which put me off using the site.
    My opinion of what is a low quality posts includes these things:
1.  Obvious junk like advertising.
2.  Posts that are just needlessly offensive.
3.  Monologues.   There are other sites and better places to just have something on display on the internet.   For example, Wikipedia takes articles written by anyone, that's how the whole thing started.   If you're bursting with knowledge or enthusiasm about a thing and want to have it on public display on the internet, see if you can write a Wikipedia article.    Meanwhile, a forum (I would think) is a place for discussion with someone else and not for publishing or what is sometimes described as "preaching".    (Rough guide: If you've replied to yourself 6 times and no-one else has replied in between, then there probably wasn't anyone here who could discuss the topic or that wished to).

It's not all negative:  One of the things that is very much in favour of this site is that it is very tolerant.   There are some forums that I would never recommend to a friend just because they are likely to put someone off stuying more physics.

Best Wishes.
Title: Re: Isn't this More Correct?
Post by: Zer0 on 27/04/2023 21:04:02
Very Nice Observations @ Eternal.

I humbly request a Moderator to Please split the thread into a new discussion.

I made a mistake asking an interesting question disguised as a follow-up.

Sorry & Thanks!

*EDIT - Apologies to the OP for making a Mess out of their Thread.
Sorry Talanum.

*Note* - Do NOT continue to Post replies on the Follow-up question regarding TNS in this Thread.

Please use the Link provided below to place your responses in the new Appropriate thread.
Thank You!

https://www.thenakedscientists.com/forum/index.php?topic=86280.msg704124#msg704124