Newsgroups: sci.electronics.design
Subject: Re: OT: central limit theorem
References: <662bf69c$0$8484$882e4bbb@reader.netnews.com> <v0gu6u$3ruka$2@dont-email.me> <662bffdf$0$8488$882e4bbb@reader.netnews.com>
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In article <662bffdf$0$8488$882e4bbb@reader.netnews.com>,
bitrex  <user@example.net> wrote:
>On 4/26/2024 3:10 PM, Don Y wrote:
>> On 4/26/2024 11:46 AM, bitrex wrote:
>>> I have one of these inexpensive Ikea bookshelves for storing some of my
>>> electronics books:
>>>
>>> <https://www.ikea.com/us/en/p/laiva-bookcase-black-brown-40178591/>
>>>
>>> I noticed the center shelf was starting to sag a few degrees. :( The
>>> assembly manual specifies a weight limit of 33 lbs evenly distributed
>>> which seemed like an oddly specific number. So I weighed the books on
>>> the shelves, which aren't particularly well organized other than to
>>> fully fill the available space widthwise on each shelf.
>>>
>>> A random assortment of hardbacks and paperbacks, some are tall and
>>> skinny, some are short and fat. And each shelf was clocking in at 33
>>> lbs +/- 2 lbs.
>>>
>>> So I guess a heuristic for filling these shelves is just fill 'em up
>>> then remove the heaviest book, and de-rate the center shelf by maybe
>>> 5- 10 lbs because it's unsupported by a backing.
>>
>> Smarter move is to buy all of your texts in electronic form, before you
>> end up with a shitload of dead trees!
>>
>> When I moved here (~30 yrs), I had some 80 "Xerox Paper" cartons full
>> of paperbacks -- not counting "text books".  (I read ~500pp/wk)  Take
>> a moment to think of that volume (let alone MASS!).
>>
>> I eventually scanned everything with a Perfect Binding and now fit those
>> same books on a single microSD card (in a Nook; PDFs on a 12" tablet).
>
>PDFs are a dreadful format! Maybe there's a high-end e-ink that
>processes them effectively but they look like shit on the cheaper ones
>like most of the Kindles with e-ink displays.

PDF's are fearful. It is under control of one company, Adobe.
It is changed without notice. I regret the change away from PostScript
that at least was defined.

Groetjes Albert
-- 
Don't praise the day before the evening. One swallow doesn't make spring.
You must not say "hey" before you have crossed the bridge. Don't sell the
hide of the bear until you shot it. Better one bird in the hand than ten in
the air. First gain is a cat purring.            - the Wise from Antrim -