I love watching, on another site, people missing the point *entirely* ...

But it's true!  There really are more hydrogen atoms in a single molecule of water than there are stars in the entire Solar System.

https://media.mathstodon.xyz/media_attachments/files/111/170/333/995/510/495/original/5850017a55445658.jpg


The best time to plant a tree was 20 years ago. The second best time is now. -- Chinese Proverb


nostr:npub1k0hh74ys2lhsrmhxsuv5jvttfkug78pf2dwyepstud23uru9hzps7ucz0d So *that's* why I don use BSD.  I've got a full head of hair, I'm clean shaven, and I'm only middle-aged if I live to 130.


nostr:npub1eadycpkxep0hn0q0khw4nvmrfwddmlll6ghx65ulh5qmf39e88qs9ff20t Woo Hoo !!!

CC: nostr:npub14wr7xp8gp8lvu0jn45vm8l6pgd656u7zakxhjnu0dknsglvem25qpuz9vk


If you never go off at a tangent, you will forever run in circles.


In about half an hour, #UK_ISS #ISS pass, starting at 22:10:46, duration 66 secs, visible, Magnitude -1.5


In about half an hour, #UK_ISS #ISS pass, starting at 20:34:57, duration 238 secs, bright, Magnitude -2.4


Some passes of the #ISS visible from the UK overnight - I'll post alerts closer to the time - #UK_ISS


nostr:npub1h5k8644csf7p9ttgyzh6rvnnaaqdt5myrpjjggxeu9flmuu9vfysamq0tu

https://media.mathstodon.xyz/media_attachments/files/111/075/150/747/214/214/original/d7ce72b2ba352067.jpg


nostr:npub1jd5xkgvjf7kglcm0lf79kxhk8xz9u7nsusc4es9nvsr25ns442xshcgrlk Yup, these sorts of cross-checks are why I knew my answer was wrong ... your numbers reinforce my corrected numbers nicely.

Thank you.


nostr:npub17900rucsvca2qaewexx2249k84tlz2wnz46rnk9vd0dm20g48epqalfrxx Yes, I edited the original to say that I'd found the mistake.

Still feeling a little embarrassed by that ...


Some people, when confronted with a problem, think 'I know, I'll use multi-threading'. Nothhw tpe yawrve o oblems. -- Eiríkr Åsheim (https://twitter.com/d6/status/160439872828620800)


nostr:npub1jwllprty3r83mu06vka8drp059s8hmn4fa766eje62jeygayelnsq05rwk Now the question is how much the answer is affected by the rotation of the Earth.  At 56 minutes, the answer is quite a lot.

So the details become interesting.


nostr:npub1nadtggdgf58wx4jjyu7x0ajkx94h873syn8mlt5jnmqgl600texsk42adz ... but the answer is now found, the Moon's diameter is a thousand times bigger ... 3475 km, not 3475 m.

So it's 3.34 times 1000 seconds, or about 56 minutes.


nostr:npub16rumu76wqz4u00e9swtenuf4c9tlvx2p6vm7trdmaduky2kayshscjm0h5 Yup.

Thanks.


nostr:npub1jwllprty3r83mu06vka8drp059s8hmn4fa766eje62jeygayelnsq05rwk Yup ... exactly right.

Now editing the original to admit the gaffe.


nostr:npub1yzgcvpqkhc8zq7y4gx9v9ch8syk53xcsetw52l8mh3l7nup2gktqux3zfx Hah !!!

There we go, so the answer is about 1000 time bigger.

That makes sense !!!

Thank you ... feeling embarrassed now ...


nostr:npub1nadtggdgf58wx4jjyu7x0ajkx94h873syn8mlt5jnmqgl600texsk42adz Close to the horizon there are atmospheric effects that screw with the numbers, so while I agree with your intuition, your evidence is not as convincing as you might hope.


nostr:npub1h26g0vlvpxmqts4kykaaluwnq23x8fwc66t76vhvpmwdtaummzlsnkdd84 Completely clouded out here.

8-(


Distance to the Moon is about 390 Megameters, time to orbit is 27.32 days, so speed in m/s is:

D*2*pi/T/86400 ~ 1040 m/s

Diameter is about 3500 m, so time of occlusion is:

3500/1040 ~ 3.36

More accurately, diameter ~ 3475m, hence

3475/1040 ~ 3.34.

Seems low to me.


Can someone check my answer:

Does the Moon travel it's own diameter in about 3.34 seconds?

(Relative to the Earth)

So if it passed directly in front of a star, does it only take 3.34 seconds for that star to reappear on the other side?

Working to follow ...


In about half an hour, #UK_ISS #ISS pass, starting at 21:22:15, duration 130 secs, bright, Magnitude -2.5


Documenting this so I can come back to it later:

Calling nostr:npub12tahzsgclh8rsuue5ks99ka5wpydp9nr3sq3865y8360dyzjxtps3fnf76 ...

nostr:npub19lt4284mghqxekzm6n5njxurnxrxhqhrva2leusdsuu5ja5jeycq66qfjk nostr:npub1lywey3rjuskr7kstpvwj3xafa56qrkfc6r7f665rxvw4sv2jw6ps5vruez


Should anyone be interested, I have this thing:

https://www.solipsys.co.uk/QL/Cricket.html

I *know* that when you first encounter this interface it's nearly impossible to navigate, but when you get used to it it's pretty powerful.

Then it becomes impossible again.

Anyway, if you don't understand cricket, and you want to try, maybe it's a start.

have a go, see what you think.


The ocean is salty because it remembers the land -- https://twitter.com/ferrisjabr/status/1491150686729687040


In about half an hour, #UK_ISS #ISS pass, starting at 20:35:12, duration 90 secs, visible, Magnitude -1.7


Some passes of the #ISS visible from the UK overnight - I'll post alerts closer to the time - #UK_ISS


Whiteboards are remarkable.


nostr:npub1yyhxsvfexhm5056zqt4rlkqcy7vupptj68mtwer49pp4sj6xxspsks44hc You could use Anki or SuperMemo for this, or use the user-hostile app I wrote.


nostr:npub1nm508g59f0n6kseh6crj90kmxszhpy27pfyp7vlxc8xzclkzgtzqwrml4a The person doing the asking isn't a technical person, they're not a programmer.  They're a civilian looking for an app that lets them create charts and count words, etc.

So what you won't help them, even though they would be of use to me.

And I don't know enough to know what might be available on a desktop Mac.


nostr:npub13j5zzt3q3pqjm0dn0hcrgck27g73052vdsusfggqjvww6y4x5wyq9nll24 The person doing the asking isn't a technical person, they're not a programmer.  They're a civilian looking for an app that lets them create charts and count words, etc.

So what you won't help them, even though they would be of use to me.


Just checking I haven't missed any corners of this conversation:

Calling nostr:npub12tahzsgclh8rsuue5ks99ka5wpydp9nr3sq3865y8360dyzjxtps3fnf76 ...

CC: nostr:npub1flkgpcth3nxzy6tyj5uld540rn82v6mekyj2wrzparpyka28qkfs70vyvu


I don't use anything from the Apple eco-sphere, and certainly don't use an iPhone.  However, a friend of mine has a geek/tech question:

Specifically, using the calendar app on an iPhone ... is there some sort of app or tool that can perform various statistical analyses on it?

She's looking for things like busy periods, most used words, charts, trends, word frequencies, and so on.

Is there anything that will do that?

If you're happy to do so, please boost to get this out of my specific circle.

Many thanks in advance ...


nostr:npub1l66ph75fqyyvg6vrk46knp5rcdtcc4urxrkqyvlm87ctxys2rtfsnwmu79 For my reference, but in case you're interested:

Calling nostr:npub12tahzsgclh8rsuue5ks99ka5wpydp9nr3sq3865y8360dyzjxtps3fnf76  ...


nostr:npub18p043gfx5fx6n5p0aq4hce6yp8kuuvrxrjk8lnmjp2je6687npkqwlqpp0 Yeah, "popula" reporting so often gets so many things wrong.

*Shrug*

At least it's a nice problem, and nice solution, and gets an airing in a mainstream publication.

CC: nostr:npub1gyyds9grknuzprch39ltt92gysvd3kmlyzxm0gpyarpcyeyzqd2seu69rt nostr:npub19wq9ycgsl8le5csg5setsgnrnr6m06q8swnr3gtsvj30q2fwp9hs3kktmt nostr:npub1mk9ezfwp0glha855ea5x7y5h4r678vqpurvfpxf50srv4ddvrawsendqzy


Tagging nostr:npub1lg73fs7use9e02tsa4e30skqsjccrlw85kpsepkamy6cp4af9hlqxa79c9 ...

CC: nostr:npub1te36m78axhjgalx3hghfadq5thszvq8l7c6cemg3kk37k7xuz9esm5c427


Note that nostr:npub1te36m78axhjgalx3hghfadq5thszvq8l7c6cemg3kk37k7xuz9esm5c427 has replied about the solutions by nostr:npub1lg73fs7use9e02tsa4e30skqsjccrlw85kpsepkamy6cp4af9hlqxa79c9 but didn't link ... it takes a while to get the hang of how Ma(th)stodon works!

https://mathstodon.xyz/@donaldbell/111054134386121694


All that glitters has a high refractive index.


nostr:npub1lx750nj5lngjr4tvpynv5q3ujuw7tucmwz6w6wqxtsgmzzlu5thq5lejfr Super ... thanks.


Tech enthusiasts: My entire house is smart. / Tech workers: The only piece of technology in my house is a printer and I keep a gun next to it so I can shoot it if it makes a noise I don't recognize. -- https://twitter.com/PPathole/status/1116670170980859905


In about half an hour, #UK_ISS #ISS pass, starting at 04:36:01, duration 62 secs, visible, Magnitude -1.7


nostr:npub15rwhs7pe29vj733wwmm4rq09mljxdylxhy0hcpjg9z2gr2m7t3uqh6kpev It's not ... the URL doesn't get changed, and I've been tracking the cookies and other parameters in the communications, so I suspect it won't be helpful.

So I'll actually decline at the moment ... I do do without more things in my in-basket!  But I might come back to you again later.

Meanwhile, I think I *have* tracked down how to access the data I need via another route, so ...

Fingers crossed, I've got it solved.


nostr:npub15rwhs7pe29vj733wwmm4rq09mljxdylxhy0hcpjg9z2gr2m7t3uqh6kpev I think urllib will have the same problem ... the page isn't simple HTML, it's a bunch of reasonably complex scripts that are pulling data from a database ... or something.

I don't think urllib can emulate browser, but you might know more than I do.

Do you want to email me your script and I can have a look at it?  Or do you think, with this extra information, that it's probably a non-starter anyway?


nostr:npub15rwhs7pe29vj733wwmm4rq09mljxdylxhy0hcpjg9z2gr2m7t3uqh6kpev As I've said elsewhere in the thread, the pages I'm calling do everything via scripts, interrogating databases somewhere and then rendering the results.

So no, curl and wget won't work, they just return effectively empty HTML.  I need a browser (or something) to execute all the scripts, fetch the data, and render the entire page so I can save it.

https://www.solipsys.co.uk/Chartodon/111029315360276602.svg


nostr:npub15rwhs7pe29vj733wwmm4rq09mljxdylxhy0hcpjg9z2gr2m7t3uqh6kpev I know how to fire it up without a GUI ... I don't know how then to give it the commands to save the page and close.


nostr:npub17nmsnlj395asphryxpsmngp7xtyp2egndrcyycu58kpnp646hapsqxdm57 Exactly so.

One option is to reverse engineer one of the annoying, ad-ridden, poorly designed TV guide sites to find what the API is to the databases that are, as you say, out there.

CC: nostr:npub1klcfua4d4kxqpkfmzwu9kr9qujhwkwk92f2ev8k20xtpqmd047rsal53rz


nostr:npub1klcfua4d4kxqpkfmzwu9kr9qujhwkwk92f2ev8k20xtpqmd047rsal53rz Thing is, these sites make their margin by advertising, so allowing the information to escape without inflicting ads on eyeballs is counter-indicated.


nostr:npub1lauccman4qjgv0lhyhpqq9f4fl70ncel2ag902eu499yaaxv7u6qvsuqs9 Indeed, it opens for me now.

Maybe I'm just overly suspicious.  I've met things like this before.  Many times.

I've become a grumpy, gnarly, suspicious old grey-beard.

CC: nostr:npub1ez3yya8tpgge7lk4jq2zxz0cj3d2mcgev9mffd4ec7tfy84hre4suexnxl


nostr:npub1ez3yya8tpgge7lk4jq2zxz0cj3d2mcgev9mffd4ec7tfy84hre4suexnxl Hah !!  Now it works in Firefox !!

Just ... horrible.


nostr:npub198fe0tyvudw3cuey7azt05rf02gjm7gjspgds76xt53hj44kdqpqqkjffe Useful ... bookmarked.

Thank you.


nostr:npub1ez3yya8tpgge7lk4jq2zxz0cj3d2mcgev9mffd4ec7tfy84hre4suexnxl Trying to open that link in Firefox leads to a delay of several seconds, then a 500 error.

Oh look!  Opening it in (incognito) Chrome works almost instantly!!

Oh how I hate the modern web ...

But thanks for the tips ... I may have found a different solution.

More in a while.


nostr:npub1zs880p5lw08y7h6tt2j3enrzz5ds75e6yt6dftlvkra7l56naxlshyvzdu See in the thread elsewhere.  Yes, nice idea, but the pages use *lots* of scripts to perform *lots* of fetches, only a few of which will be relevant.

Calling nostr:npub12tahzsgclh8rsuue5ks99ka5wpydp9nr3sq3865y8360dyzjxtps3fnf76 ....


nostr:npub17nmsnlj395asphryxpsmngp7xtyp2egndrcyycu58kpnp646hapsqxdm57 Thought of that, but there are a *lot* of fetches going on ... modern web programming, dontcha know.

*Sigh*

It's one of those days where I keep reminding myself that these are first world problems, and lots of people have it worse than I do.  Which just makes me more depressed, but puts my problems in some context.

OK, rebooting to (hopefully) recover my missing right-click. Back soon.

I hope.

CC: nostr:npub1a7uf6l0fdhg6p4g9r0r7y2a87v2k0fujwhl6xpts86mm7xe6p59sdhx0rg


*Sigh*

Having to reboot my computer because my right-click has stopped working.

And people want to run their cars by software.


This is following on from here:

https://mathstodon.xyz/@ColinTheMathmo/111028519434490719

Trying to bring my FOMO back under control now that a web page has changed its format and thereby broken my existing tools.


nostr:npub1klcfua4d4kxqpkfmzwu9kr9qujhwkwk92f2ev8k20xtpqmd047rsal53rz Thanks, I'll have a look at that.

All I want is a plain text TV guide for a given day.


nostr:npub1a7uf6l0fdhg6p4g9r0r7y2a87v2k0fujwhl6xpts86mm7xe6p59sdhx0rg Nice idea, but I've been using wget and curl, but all I get is html full of scripts.

These are *fancy* web pages.


Is there a way to invoke firefox from shell to:

(a) open a specific URL;

(b) save the page when it's loaded;

(c) close.

??

(Using bash on Ubuntu 22.04)


nostr:npub1s5azgzhgelvmh6n8hry0fmnmut6ee2qcemea8s98a2gwja4h38asgr0cc5 nostr:npub1nm75pf8mraugcnswxx7pkcwvucmswtd3k4aehm9mrfn4funt63wsps8a3f Yes, we see it very, *very* occasionally, but it's most useful when it's readily available all throughout, which is why I implemented my own version that I update as we watch.

As I say, *especially* useful in the highlights programs since they jump forward by unpredictable amounts.

When watching live I've thought of posting it constantly for people to have access to, but not sure anyone would care.


nostr:npub1s5azgzhgelvmh6n8hry0fmnmut6ee2qcemea8s98a2gwja4h38asgr0cc5 When we watch the cricket, nostr:npub1nm75pf8mraugcnswxx7pkcwvucmswtd3k4aehm9mrfn4funt63wsps8a3f says she benefits from my real-time charting of the scores.  This shows the third Women's T20.

It's really helpful to see how the chase is going, especially in a highlights program when they don't show the pressure building from the dot balls.

https://media.mathstodon.xyz/media_attachments/files/111/028/909/963/992/739/original/72fcb43c9abb8d4a.png


From this thread I'm learning much more than I ever wanted to know about PDFs:

https://mathstodon.xyz/@christianp/111028682032084169

But knowing it's here means I can reference it later if I find I do need to know these things.


This is a fabulous post:

https://mathstodon.xyz/@adhestenes/111027392064551643

#MTBoS #ITeachMath


Here's an interesting story unfolding ...

https://mathstodon.xyz/@christianp/111028557051083131


The person who says it cannot be done should not interrupt the person doing it. -- A rephrasing from multiple sources: https://quoteinvestigator.com/2015/01/26/doing/


... the site I've been using as my TV listings source no longer works for me.  I *might* be able to reverse engineer their changes, but it's not guaranteed, and would take many hours.

So I'm getting anxious.

I can control it for a while, but what I really need is an on-line source of TV listings for the Freeview channels in the UK.

Assistance and concrete advice welcome.


Over the years I've found multiple valuable TV programs to watch without being overly distracted by the opium of "Entertainment".  I'm easily distracted by things that are engaging, but ultimately time-wasters of no value.

How have I found them?

I found an on-line TV listings site, downloaded *all* the program descriptions, then run them through a Bayesian classifier.

Spot sampling has convinced me that I can continue to ignore those marked as "Uninteresting", and I know I won't miss out on things I've pre-selected as "Definitely Record".

Then I can quickly scan those marked as "Might be interesting", and I'm done.  Just a few minutes per day, and I know that out of the thousands of programs I've captured nearly everything I will want to watch.

But ...


In about half an hour, #UK_ISS #ISS pass, starting at 05:21:49, duration 197 secs, bright, Magnitude -2.2


In about half an hour, #UK_ISS #ISS pass, starting at 03:48:53, duration 49 secs, visible, Magnitude -1.4


Calling nostr:npub12tahzsgclh8rsuue5ks99ka5wpydp9nr3sq3865y8360dyzjxtps3fnf76 ...

CC: nostr:npub10940z6cfs9wndhte7mkgw7tw79k68pp5z0k84weuph5swvsrn2xqrm2wum


nostr:npub1jp63tc5ksxm9l88qe95f3jcwfs3qnj5zrny76nwwqatrqzm948pqhweawl If you mean Simon Peyton-Jones, I haven't seen him, and a quick search doesn't find him.

If you mean someone else, then who?


Some passes of the #ISS visible from the UK overnight - I'll post alerts closer to the time - #UK_ISS


nostr:npub10wr7ss3gswyxxpnlt6jwt7mv8h390gvr275ng6a2f6pmjafgn0vqmx53lp Certamente o Duolingo tem algumas obsessões muito estranhas.


nostr:npub14vgamf2zucjlrxrp9tuudutklyt9ny8at3g5t6d4z7zs22g7gjqsujasrr Certo!


Today is the oldest you've ever been, and the youngest you'll ever be again. -- Eleanor Roosevelt


Ah ... Duolingo:

A borboleta quer que eu a leve ao teatro.

Such realism ...


In about half an hour, #UK_ISS #ISS pass, starting at 04:34:59, duration 192 secs, very bright, Magnitude -3.3


nostr:npub10w3367kxqkl7f3nv0yy2smqf00k4c5te380ws8awmmcu358qvyhq4ctmd0 That's a nice one!