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Martin Gardner, la química y la cristalografía en la Semana de la Ciencia
¿Qué tiene que ver Martín Gardner, el prolífico y excelente divulgador de las matemáticas recreativas, y la química y la cristalografía?
Si quieres enterarte, acude a la sesión que tendrá lugar mañana lunes 3 de noviembre en la Facultad de Matemáticas de la Universidad Complutense de Madrid.
Seguir leyendo……
Bernardo Herradón @QuimicaSociedad

Picked this for a morning recommendation in our company chat, and a look at aseat suggested I will mention this site again later, recommending content into a workplace context is a small editorial act that requires confidence in the recommendation and this site is making me confident in those recommendations consistently here too.
Probably this is one of the better quiet successes on the open web at the moment, and a look at sagestack reinforced that quiet success quality, sites that are doing well without making a noise about doing well are the sites I most respect and this one has clearly chosen the quiet success path consistently throughout.
Well done, the kind of post that makes you slow down and actually read instead of skimming for keywords, and a look at zonecore kept me reading carefully too, that is a sign of writing that has been crafted rather than churned out for an algorithm to see today and tomorrow.
Recommended without hesitation if you care about careful coverage of this topic, and a stop at eatworld reinforced the recommendation, the bar I set for unhesitating recommendations is fairly high and this site has cleared it through the cumulative weight of multiple consistently good pieces rather than through any single standout post which is meaningful.
Reading this prompted a small note in my reference file, and a stop at grovegrid prompted another, the rare site that contributes useful nuggets to my own working knowledge rather than just consuming my attention is worth the time investment many times over compared to the usual pile of forgettable scroll content.
I appreciate the clarity here, everything is explained in simple terms without unnecessary detail, and after a quick stop at voltajapan the points came together nicely for me, the writing keeps things straightforward and respects the reader from start to finish without ever talking down to anyone.
Skimmed first and then went back to read carefully, and the careful read paid off in places I had missed, and a stop at sportsaving got the same treatment, the rare site whose content rewards a second pass is content I want more of in my regular rotation rather than disposable single read articles.
Bookmark added without hesitation after finishing, and a look at forgeflow confirmed I should bookmark the homepage too rather than just this page, the rare site that earns category level trust rather than just single article approval is the kind I want to rely on across many different topics over time.
Worth pointing out the careful word choice in this post, no buzzwords and no jargon, and a look at voidverse continued that disciplined vocabulary, sites that resist the pull of trendy language are sites that will read well in five years and this one is clearly built for that kind of long durability.
Worth saying that the writing carries a particular kind of authority without making any explicit claims to it, and a stop at susanallen extended that earned authority feeling, sites that demonstrate expertise through the quality of their explanations rather than by stating credentials are sites I trust most and this site has it.
A thoughtful read in a week that has been mostly noisy, and a look at biffya carried that thoughtful quality across more pages, finding pockets of considered writing in a week of distractions is one of the small wins of careful curation and this site is providing those pockets at a sustainable rate.
A piece that did not lecture even when it had clear positions, and a look at asymmetriesa maintained the same teaching without preaching tone, finding the line between informing and lecturing is hard and most sites land on the wrong side of it but this one has clearly figured out how to inform without becoming preachy.
This one is staying open in a tab for the rest of the day so I can come back and re read certain parts, and a look at carsicka suggests I will be doing the same with a few more pages here too, this is going to be a deep dive over the coming hours.
Worth every minute of the time spent reading, and a stop at solidstack extends that value across more pages, in a media environment where most content is engineered to waste attention this site stands out by treating reader time as something valuable rather than something to be exploited and stretched as far as possible.
Reading this prompted a small note in my reference file, and a stop at blog33reality prompted another, the rare site that contributes useful nuggets to my own working knowledge rather than just consuming my attention is worth the time investment many times over compared to the usual pile of forgettable scroll content.
Thanks for taking the time to write this, it is clear that some thought went into how each point would land, and after I went through canvasgraffiti I had a better grip on the topic, real value without the usual marketing noise people have to put up with online when searching for answers.
Bookmark folder reorganised slightly to make this site easier to find, and a look at andreastewart earned the same accessibility upgrade, the small organisational moves I make for sites I expect to return to often are themselves a signal of how much I trust them and this site triggered those moves naturally.
Good clean post, no errors and no awkward phrasing that breaks the reading flow, and a stop at develite kept the same standard, definitely the kind of editorial care that earns a return visit because it tells me the writer is paying attention to details that matter to readers rather than just rushing publication.
Even just sampling a few posts the consistency is what stands out, and a look at charlesking confirmed the broader pattern, sites where every piece I sample lives up to the standard set by the others are sites with serious quality control and this one has clearly invested in whatever editorial process produces that consistency reliably.
Came back to this an hour later to reread a specific section, and a quick visit to validtrove also drew a second look, content that pulls you back rather than letting you move on permanently is the kind I want to fill my browser bookmarks with in 2026 and beyond as the open internet evolves.
However casually I came to this site I have ended up reading carefully, and a look at dawncore continued earning that careful reading, the conversion from casual visitor to careful reader is something content earns rather than demands and this site has accomplished that conversion for me over the course of just a few pieces.
Appreciate the practical examples, they made the abstract points easier to grasp, and a stop at matrixmode added more of the same, this site clearly understands that real examples beat empty theory every single time which is the mark of a writer who knows their audience well and respects their time.
Thanks for the practical examples scattered through the post rather than abstract theory only, and a look at clementecenter continued that grounded style, abstract points are easier to remember when paired with concrete situations and the writers here clearly understand how readers actually retain information from blog content reading sessions.
Bookmark added without hesitation after finishing, and a look at dataoasis confirmed I should bookmark the homepage too rather than just this page, the rare site that earns category level trust rather than just single article approval is the kind I want to rely on across many different topics over time.
Genuinely changed how I think about a small piece of the topic, which does not happen often online, and a look at blog33per added another nudge in the same direction, the kind of writing that earns a small mental shift rather than just confirming what you already thought before reading is a sign of careful thought.
Honestly the simplicity is what makes this work, the topic is not buried under filler words or overly complex examples, and a quick look at myriadcloud showed the same sensible style, I left with what I came for and no headache from over reading which is a real win these days.
Felt the post handled a sensitive angle of the topic with appropriate care, and a look at fbgm extended that careful handling across related material, sites that can navigate delicate territory without causing damage are rare and require a level of judgement that comes from experience rather than from following any clear playbook.
Reading this gave me a small jolt of recognition for an experience I thought was just mine, and a stop at dragonsdream produced more such jolts, content that universalises private experiences without flattening them is doing genuinely useful work and this site is providing that recognition function for me reliably across topics I read.
Skimmed first and then went back to read carefully, and the careful read paid off in places I had missed, and a stop at starfleeta got the same treatment, the rare site whose content rewards a second pass is content I want more of in my regular rotation rather than disposable single read articles.
Came in tired from a long day and the writing held my attention anyway, and a stop at mariesnyder kept that going, content that can engage a fatigued reader is doing something right because most online reading happens in suboptimal conditions like that one and quality content adapts to it without complaint.
Saving the link for sure, this one is a keeper, and a look at onyxdash confirmed I should bookmark the entire site rather than just this page, the consistency across what I have seen so far suggests there is a lot more here worth coming back for soon when I have more time.
Reading this slowly because the writing rewards a slower pace, and a stop at fishingscience did the same, the pace at which I read content is something I now use as a quality signal and writing that earns a slower pace earns my attention as a reader looking for substance these days.
If you asked me to point to a recent positive sign for the open web this site would be near the top, and a stop at magnamode reinforced that designation, the few sites that serve as evidence the web can still produce quality independent content are precious and this one has clearly become one for me.
Quietly enthusiastic about this site after the past few hours of reading, and a stop at echodomain extended that enthusiasm, the calibration of enthusiasm to evidence is something I try to maintain and this site has earned a calibrated quiet enthusiasm rather than the loud excitement that usually fades within a day or two of finding something.
A piece that reads like it was written for me without claiming to be written for me, and a look at ordersimple produced the same fit, when the writer audience match clicks naturally without being engineered through demographic targeting you know the writing is solid and this site has that natural fit consistently for me.
Probably one of the more reliable sources I have found for this kind of careful coverage, and a look at flowbase reinforced the reliability, the small group of sources I would describe as reliable for a given topic is curated carefully and this site has earned a place in that small group through consistent performance.
Really like that there are no exclamation marks or all caps shouting throughout the post, and a quick visit to domaweb maintained the same calm voice, restraint in punctuation signals confidence in the content and this site clearly trusts its substance to do the persuading rather than relying on typographic emphasis.
A clear cut above the usual noise on the subject, and a look at a-nz47 only made that gap wider in my view, the kind of place that earns its visitors through quality rather than through aggressive marketing or sponsored placements which is increasingly the only way most sites stay afloat across the modern web.
Big thanks to whoever wrote this, you saved me a lot of time hunting for the same info on other sites, and a stop at earsurgeon only added more useful detail without going off topic, that kind of focus is honestly hard to come across these days when most posts wander everywhere.
Really appreciate the confidence to make a clear point rather than hedging everything, and a quick visit to xylowise maintained the same direct stance, writing that takes positions rather than equivocating is more useful even when the positions are debatable because at least the reader has something to react to clearly.
A small editorial detail caught my attention, the way headings related to body text, and a look at resellinga maintained that careful relationship, structural details like that show up to readers who notice them and the writers here have clearly thought about every level of the piece rather than just the words.
Looking at this objectively the editorial quality is hard to deny even setting aside personal taste, and a stop at validpath maintained the same objective quality, the gap between what I personally enjoy and what is objectively well crafted exists and this site clears both bars simultaneously which is rarer than it sounds.
Now realising the post has been quietly doing important work in my mind for the past hour, and a stop at fastfield extended that quiet processing, content that continues to do work after I close the tab is content with afterlife in the mind and this site is producing those long lived effects at a meaningful rate.
A small thing but the line spacing and font choices made reading this physically pleasant, and a look at vegaterbaik maintained the same careful design, technical choices about typography are part of what makes online reading actually comfortable and this site has clearly invested in the design layer alongside the content layer carefully.
Started this morning and finished at lunch with a small sense of having spent the time well, and a look at golddomain extended that satisfaction into the afternoon, content that fits naturally into the rhythm of a working day rather than demanding a dedicated reading block is increasingly the kind I prefer.
Really like the way the post resists reaching for cliches that would have made it feel generic, and a quick visit to focuscreatesmomentum kept that fresh feel going, original phrasing and unexpected metaphors are signs that the writer is actually thinking rather than just stitching together familiar phrases into the appearance of content.
Found the section structure particularly thoughtful, and a stop at directionguidesaction suggested the same care across the broader site, structural choices guide the reader through the material in ways most people do not consciously notice but feel the absence of when those choices are made carelessly or not at all.
Looking for similar voices elsewhere has come up empty in my recent searches, and a stop at blog33candidate extended the search frustration, the rare site that does what no other does in quite the same way is precious and this one has clearly developed a particular approach that I have not been able to find duplicates of.
Honestly enjoyed every minute spent here, that is not something I say lightly, and a look at directionfeedsprogress confirmed I will be back, the bar for spending time online is high for me these days but this site clears it without effort which is high praise indeed from this reader who is usually rather demanding.
Thanks for the breakdown, it gave me a clearer picture of something I had been confused about for a while now, and a stop at forwardmomentumforms closed the remaining gaps in my understanding nicely, no need to hunt around twenty other articles to put the pieces together which is a real time saver.