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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

Honestly this was the highlight of my reading queue today, and a look at https://thisispuretesting.com extended that across more pages I will return to, ranking what I read against what else I read each day is something I do informally and this site keeps moving up in those rankings the more I explore it.
Honestly impressed, did not expect to find this level of care on the topic, and a stop at ideaswithoutnoise cemented the impression, you can tell within the first few paragraphs whether a site is going to be worth the time and this one delivered on that early promise nicely throughout the rest of what I read.
Started imagining how I would explain the topic to someone else after reading, and a look at progresswithpurposefulmotion gave me more material for that imagined explanation, content that improves my own ability to discuss a topic is content that has actually transferred knowledge rather than just decorating my screen for a few minutes.
Reading this prompted a small redirection in something I was working on, and a stop at ideasflowforward extended that redirecting influence, content that affects my actual work rather than just my thinking has the highest practical impact and this site is providing that level of influence for me at a sustainable rate apparently.
Found the rhythm of the prose particularly enjoyable on this read through, and a look at sprucetrill kept that musical quality going across the related pages, sentence rhythm is something most blog writers ignore but it makes a real difference in how content lands with the careful reader who cares.
Honestly enjoyed every minute spent here, that is not something I say lightly, and a look at tracetrifle 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.
Glad the writer did not feel the need to argue with imaginary critics in the post itself, and a stop at appgrove kept the same focused approach going, defensive writing wastes the reader time and confidence on positions that did not need defending and this post has clearly avoided that common failure.
A welcome contrast to the loud takes that have dominated my feed lately, and a look at appglen extended that calm voice, content that arrives without yelling has become unusual in the modern attention economy and this site is one of the few places I have found that consistently delivers without raising its voice.
A slim post with substantial content per word, and a look at devoasis maintained the same density, the content per word ratio is something I track informally and this site scores high on that ratio compared to most sources I read regularly which is a quiet indicator of careful editorial work behind the scenes.
Halfway through reading I knew this would be one to bookmark, and a look at blog33people confirmed that early intuition, when bookmark intent forms before finishing a post you know the writing has cleared a quality bar that most content fails to clear and this site has cleared it on multiple visits already.
Just want to flag that this was useful and not bury the appreciation in caveats, and a look at riveroot earned the same direct praise, recognising good work without hedging it with criticism is something I try to practice because over qualified compliments tend to read as backhanded and miss the point sometimes.
Walked away with a clearer head than I had before reading this, and a quick visit to devprime only sharpened that, the writing has a way of cutting through the noise that surrounds most topics online which is something I will definitely remember the next time I am searching for an answer to anything.
A relief to read something where I did not have to fact check every claim mentally, and a look at softcreek continued that reliable feeling, sites where I can lower my guard and trust the content are rare and this one is earning that trust paragraph by paragraph through consistent careful work behind the scenes.
Closed the post with a small satisfied sigh, and a stop at riserun produced the same gentle exhale, content that ends well is content that respects the rhythm of reading and the writers here have clearly thought about how their pieces close rather than just trailing off when they run out of things to say.
A piece that did not waste any of its substance on sales or promotion, and a look at mirrorberg continued that pure content focus, sites that resist the urge to monetise every paragraph are increasingly rare and this one has clearly made the editorial choice to keep the writing clean from commercial intrusion which I value highly.
If I were grading sites on this topic this one would receive high marks, and a stop at edgedomain continued earning those high marks, the informal grading I do mentally for content sources is something I take seriously even though it is informal and this site has been receiving consistent high marks across multiple sessions today.
Probably worth setting aside a longer block to read more carefully than I can right now, and a stop at soberviola confirmed the longer block plan, the impulse to schedule dedicated time for a sites archive is itself a measure of trust and this site has earned that scheduling impulse from me clearly today actually.
Honestly enjoyed every minute spent here, that is not something I say lightly, and a look at imaginala 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.
Liked that the post left some questions open rather than pretending to settle everything, and a stop at kiwaniscebu continued that intellectual honesty, content that respects the limits of its own claims is more trustworthy than content that overreaches and this site has clearly figured out which positions it can defend confidently.
Just enjoyed the experience without needing to think about why, and a look at asheta kept that effortless feeling going, sometimes the best content is invisible in the sense that you forget you are reading until you reach the end and realise time has passed without you noticing it pass naturally.
Reading this prompted me to dig into a related topic later, and a stop at sergevermin provided some of the starting points for that follow up reading, content that triggers further exploration rather than satisfying curiosity completely is content with real generative energy and this site has plenty of that energy throughout it.
Worth flagging that the writing rewarded a second read more than I expected, and a look at blog44evidence produced the same second read benefit, content with hidden depths that emerge only on careful rereading is rare in the modern blog space and this site has clearly invested in that level of compositional density throughout.
Genuine reaction is that this site clicked with how I like to read, and a look at zonalzen kept that comfortable fit going, sometimes you find a place online whose editorial decisions just align with your preferences and when that happens it is worth recognising and supporting through repeat engagement consistently going forward.
Speaking from the perspective of a fairly demanding reader the writing here clears the bar consistently, and a look at blog66improves continued clearing that bar, the calibration of demanding reader is something I apply to all sources and this site has been one of the few that handles the demanding reading well across pieces sampled.
Now appreciating that I did not feel exhausted after reading, and a stop at a-nz41 extended that energising quality, content that leaves me with more attention than it consumed is rare and the gap between draining and energising content is real over the course of a typical day spent reading widely online.
The post made the topic feel approachable without making it feel trivial, that is a fine balance, and a stop at uptonvelour maintained the same balance, finding the middle ground between welcoming and serious is genuinely difficult and the writers here have clearly figured out how to consistently hit it well across many different posts.
Took the time to read every paragraph rather than skimming for the punchline, and a quick visit to joshuasullivan earned the same careful attention from me, that is the highest signal I can give about content quality because my default mode is rapid scanning rather than deliberate reading on most pages.
Reading this fit naturally into my afternoon walk because I was reading on my phone, and a stop at appyield continued well in that walking format, content that survives mobile reading without becoming awkward is content with format flexibility and this site has clearly thought about how it reads across different devices today.
Now feeling the small relief of finding writing that does not condescend, and a stop at amyandyou extended that respect for readers, content that treats its audience as capable adults rather than as people to be managed produces a different reading experience and this site has clearly chosen the respectful approach across all pieces.
Just want to recognise that someone clearly cared about how this turned out, and a look at softprairie confirmed that care extends across the broader site, you can feel the difference between content shipped to hit a deadline and content released because the writer was actually proud of the result for once.
Now noticing that the post never raised its voice even when making a strong point, and a look at tomatotiara continued that calm volume, content that can make important points without resorting to typographic emphasis or emotional appeal is content that trusts its substance to do the work and this site has that confidence consistently.
Started this morning and finished at lunch with a small sense of having spent the time well, and a look at altyazilipornolar 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.
Most blog writing on this subject reaches for the same handful of arguments and this post avoided them, and a look at a-nz50 continued the original treatment, content that finds its own path through territory other writers have flattened is content with real authorial energy and this site has plenty of that distinctive energy.
Will recommend this to a couple of friends who have been asking about this exact topic, and after longdon I have even more reason to do so, the kind of site that earns word of mouth rather than chasing it through aggressive marketing or paid placements is always a treat to find online.
A genuine compliment to the writer for keeping the post focused on what mattered, and a look at falunmirror continued that disciplined focus, focus is a editorial choice that compounds across many small decisions and this site has clearly made those small decisions consistently across what I have read so far this week here.
Just want to acknowledge that the writing here is doing something right, and a quick visit to formflow confirmed the same standards run across the broader site, recognising good work is something I try to do when I find it because the alternative is silence and silence rewards mediocrity.
A quiet kind of confidence runs through the writing, and a look at christineclark carried that same understated assurance, confidence without bragging is the most attractive register for online writing and the writers here have clearly developed it through practice rather than affecting it through stylistic tricks that would feel hollow eventually.
My time on this site has now extended past what I had budgeted, and a stop at tinews keeps extending it further, content that overstays its budget in my schedule is content that has earned the extra time and this site has been earning extra time across multiple visits to the point where my schedule needs adjustment.
Honestly this hits the sweet spot between detail and brevity, no rambling and no shortcuts, and a quick visit to soucia kept that going across the related pages, the kind of place that respects your attention without trying to grab it through cheap tactics or attention seeking design choices that get tired fast.
A piece that handled multiple complications without becoming confused, and a look at holychords continued that organisational clarity, holding multiple threads in a single piece without losing any of them is a sign of skilled writing and this site has clearly developed the editorial discipline to manage complexity without sacrificing readability throughout.
If I were to recommend a starting point for the topic this site would be near the top of my list, and a stop at poetpopulist reinforced that recommendation status, the small list of starting point recommendations I keep for friends asking about topics is short and this site is now firmly on it.
Decided to set aside time later to read more carefully, and a stop at jamesduncan reinforced that decision, content that earns a calendar entry rather than just a passing read is in a different tier altogether and this site is clearly working at that elevated level which I really do appreciate as a reader today.
Felt the writer respected the topic without being precious about it, and a look at robertbriggs continued that respectful but unfussy treatment, finding the right register for serious topics is hard and this site has clearly figured out how to take the topic seriously while still being readable for casual visitors regularly.
I learned more from this short post than from longer articles I read earlier today, and a stop at gladiatorsforum added even more useful detail without going off topic, this site clearly knows how to keep things focused without sacrificing depth which is a hard balance to strike for any writer.
Just want to record that this site is entering my regular reading list, and a look at zephyrpearl confirmed it deserves the spot, my regular reading list is short and well curated and adding to it requires meeting a fairly high quality bar that this site has clearly cleared without much effort apparently.
Going to share this with a friend who has been asking the same questions for a while now, and a stop at meledak77mantap added a few more pages I will pass along too, this is the kind of generous information that earns a small thank you from me right now and again later this week.
A piece that read as the work of someone who reads carefully themselves, and a look at magisteriuma continued that informed feel, writers who are also serious readers produce work with a different quality and this site reads as the product of someone steeped in good writing rather than just generating content for an audience.
Liked how the writer used real examples instead of theoretical ones to make the points stick, and a stop at aurablis added even more concrete examples, this is the kind of practical approach that respects readers who actually want to apply what they learn rather than just nodding along passively without doing anything useful.
Nice to see a post that does not try to overcomplicate the basics for the sake of looking smart, and once I looked at mage77-rtp the same direct tone was there too, which honestly makes a difference when you are short on time and want answers without long pointless intros.
Felt mildly happier after reading, which sounds silly but is true, and a look at mariahill extended that small mood lift, content that improves rather than degrades my mental state is content I want more of and the cumulative effect of reading sites that lift versus sites that drag is real over time.