@dharr ok so for table references. I think I might see where it could make things easier.

M[Sun]:=0

M[Earth]:=3

table(M)

So for naming conventions, in the ScientificConstants case (others too I guess) it should always be referenced with square brackets.  As long as that's the standard practice, and it's known.  The double underscore should only be used as a "one off" naming case, I think, if that sounds right?

@dharr ah ok I see.  It all depends on how the symbol was entered in the first place. 

So if the symbol was entered, as the case is, M[Sun] it will be shown as M_Sun but also M__Sun also shows as M_Sun

It is a small discrepancy.  They should equate to the same but I now see why one doesn't work.  Any reason they couldn't be the same?

I do recall that, and then it faded away.  Wolfram has kept up the rhetoric. 

Indeed there will exist a bias.   But I notice an exageration at mathematica, where "they" already had some operation that they propose existed eons before Maple, and psychological suggesting that Maple is lagging way behind when in fact it was just an update or a tweak to make it better and someone at Wolfram percieved it wrongly or wanted to "convey" it differently to the public.  (kind of like Trump trying to tell the masses they're subsidizing Canada with billions of dollars when it's just a normal trade deficit - it's exactly the same as you and I running a deficit with the grocery stores or in Trumps terms we are subsidizing the grocery stores - not a bad thing, it's just normal .. besides 400 million people buying from a country that only has 40 million people, obviously there's going to be a difference) .. but I digress. 

Wolfram has an employee base of 635, whereas Maplesoft has about 174 -that's a huge difference.  Considering that, Maplesoft and Wolfram is a bit like David and Goliath. 

I did some searching and located some of the files on the wayback machine - but with Trumps helter skelter policies who knows how long that site will be on for.  I found the Physics updates for Maple17 and Maple18 and also a special functions update I will upload here for convenience. 

Physics-61.3-finalupdate_for_Maple17-Mar18.mla.zip

PhysicsMaple18-46.2-finalupdate-forMaple18-Mar6.mla.zip

and the special functions updates

DEsAndMathematicalFunctions-17-finalupdateforMaple17.zip
-sorry this one from wayback didn't work but the first one above is available for maple 17 and should be sufficient.

DEsAndMathematicalFunctions-18-finalupdateMaple18.zip

After Maple 18 I belive the two research projects were combined into one zip package which I have already uploaded in the previous post of mine. 

I have located the last Physics updates for Maple 2015, 2016 and 2017 on my drive.  I will share them here, as it appears the many updates at maplesoft, the files have been purged or lost. It could be that not being labelled Physics_updates that they weren't saved - I believe this is before the Maple cloud which is why they can't be found there.

Physics_DEs_MathFuncs_Maple2015.50.8-final_2015update-mar21-2015.mla.zip

Physics_DEs_MathFuncs_Maple2016.16.7-final_2016update_-_Apr15-2017.zip

Physics_DEs_MathFuncs_Maple2017_92-Sept_2.zip

@ecterrab Also what happened to the earlier packages prior to Maple 2018.  I think you implemented the Physics package initiative as far back as Maple 16.  What's happened to those updates I can't find them anywhere.

@ecterrab Thanks!

I don't see that directly from the Firefox or microsoft edge browser.

Luckily here on mapleprimes, not to single anyone nor leave anyone out, there are many great notables that make great contributions to help others get around the various quirks that get us stuck.  And then some extreme brilliances where someone has an idea and creates an awesome extension like the Physics package.  It is one of those great extensions that make Maple better.  It's also an example that Maple is not limited to it's own internal programming, but can be tweaked and customized with a little (or a lot in this particular case) from external influences.  Maple is still a very flexible platform, not without it's faults, but still a great program.  The loss of any development in these areas would indeed be a great loss.

I also believe MapleFlow and MapleSim both branched into their own divisions (Maple offshoots) by similar brilliance of ideas, and not to say it wasn't a good thing but it did erode the brain power a little from the main Maple core. 

It's great to have had the Physics package, a great contribution!!  Hopefully Maple can continue maintaining it.  Although with Edgardo S. Cheb-Terrab no longer running this project full time, his contributions will be surely missed.

There is a Degrees package which I have somehow become unfamiliar with.  Introduced in Maple 2021, allows entering values in degrees with functions sind, cosd etc...  Kind of a stopgap bandaid approach I guess.

@C_R  Not sure if oracle virtualbox will do what you want but it will allow you to run multiple operating systems on one machine.  Also a setting that allows file access between the different operating systems.

For documentation purposes, I was using Maple 2022.  Windows 7 using an semi-old laptop. 

I thought it was some kind of virus, or some hacker using the mouse wireless interface.  The batteries in the mouse were good but I had to disconnect the mouse usb from the usb port. I didn't imagine it was the mouse either but for me it actually was.  It didn't stop till I unplugged the usb transmitter.  Maybe even take the mouse apart and clean it - could be a hair or spider in there.  A spider once blew up my desktop colossus 2 video card - that was madenning (gotta make sure the desktops get vacuumed out once in a while)

Are you by chance using a wireless mouse?

I had something similar but I can't recall if maple was open.  But menus were being selected other programs were being opened and closed it was pretty wild.  I thought it was the battery in my mouse so I unplugged the wireless usb reset the computer and everything was good.

I think it was unrelated but worth noting because of the similar issues.

Haven't seen it again.

@C_R ok thanks I'll look into that.  

I'd have to use a stress strain curve I guess.  Haven't thought of how I'd do it yet but for an idea i was thinking about ... it's probably simple enough, just have the idea. 

How about a 3-3/4" diameter cast aluminum pipe 6.5mm thickness (metric and imperial I know) at a 3" point it breaks from an anchored section.  There was an unknown force 7" from the anchor point.  How much force occured to break it?  I drew a quick diagram in paint that will better shows what I was dreaming of.  Basically how much force at the large arrow is required to break the object.