2024-08-23 01:04 UTC
Replies (34)
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@andrewt@mathstodon.xyz 2024-08-23 01:08
@mhoye yeah, I love this. I especially like that it kind of says "1 mile? Yeah, that's either 1 or 2 km, both fine options." The nicer numbers at higher values are great but I really enjoy how much it doesn't really need them
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@mwl@io.mwl.io 2024-08-23 01:06
@mhoye Mind. Blown.
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@LovesTha@floss.social 2024-08-23 01:28
@mhoye That is interesting. I find the 58 conversion to be enough to work out useful conversions in my head. It works very well for all the speed limit conversions.
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@zkamvar@hachyderm.io 2024-08-23 02:40
@mhoye I love mentioning this to people whenever I get the chance.
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@screw_dog@aus.social 2024-08-23 03:44
@mhoye and for numbers that aren't in the sequence you can just break them down. 40 miles? 40 miles ≈ 5 miles + 34 miles ≈ 8km + 55km ≈ 63km
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@level98@mastodon.social 2024-08-23 03:50
@mhoye That's a neat little observation. 😀 #Math #Maths
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@michaelchirico@fosstodon.org 2024-08-23 04:30
@mhoye 8/5 is way more practically useful imo b/c of base 10. for Fibonacci you either need to have a boatload of numbers memorized (to divide by the appropriate power of 10) or only be talking about very specific comparisons.
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@Jawaka@floss.social 2024-08-23 05:12
@mhoye When I first moved from a miles nation to a kilometre nation I did "divide by five and multiply by three". After a few months I realised there was no point and just mentally switched to kilometres.
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@lachezar@mastodon.nu 2024-08-23 11:03
@mhoye that is a proper life hack 💡
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@justin@toot.io 2024-08-23 11:20
@mhoye neat but imagine if places just stopped using miles. 🤔
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@vksxypants@mastodon.social 2024-08-23 12:21
@mhoye there was a glorious time when the GBP/USD exchange rate was about 1.618 too, and you could do this with UK/US currency conversions.
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@mcdanlj@social.makerforums.info 2024-08-23 15:30
@mhoye One of today's lucky ten thousand! 🎉 I learned this running cross country in high school, because at least at that time and place, HS men's courses were 3 kilometers or 5 miles, and HS women's courses were 2 kilometers or 3 miles, which was still sufficiently close to notice the start of that series. 😀
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@0x10f@tech.lgbt 2024-08-23 15:51
@mhoye The natural logarithm of 5 is also approximately 1.609, so 5 raised to the number of miles is almost equal to e raised to the equivalent number of kilometres.
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@vatine@mendeddrum.org 2024-08-23 19:26
@mhoye And if you write your numbers in a Fibonacci base, converting between them simply becomes a shift (left for miles -> km, right for hm -> miles). You can sort-of cheat and use binary numbers, as long as you never have two consecutive "1" (they'd add up and carry to the left), but doing addition that way is actually shockingly complicated.
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@oscherler@tooting.ch 2024-08-23 21:56
@mhoye @timixretroplays I just divide by ten and double four times I a row. The other way round is easy too.
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@owen@mementomori.social 2024-08-24 18:48
@mhoye This is extraordinarily interesting. How large do we have to go before the numbers diverge too much to be useful?
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@stadsplanering@mastodon.nu 2024-08-25 07:52
@mhoye It would be even neater if the US just adapted to m/km when it comes to distance/length and speed. That would be the neatest.
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@mldot@bildung.social 2024-08-25 19:31
@mhoye #MathematikEDU
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@punishmenthurts@neurodifferent.me 2024-08-25 19:59
@mhoye @lucasmz . just zero the lsd, 20 is 30, 30 is 50, 50 is 80, that’s how we Canucks manage to keep the speed limit in America, or calculate mileage, but that’s cool!
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@mschomm@bonn.social 2024-08-25 20:03
@mhoye Thank you for that reminder. It's so easy for us ISOnauts to forget that there are still people out there less fortunate than us who still have use for this kind of crutches in their daily lives. 😁
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@vampirdaddy@chaos.social 2024-08-25 20:10
@mhoye Doesn’t work for swedish miles (1 mile= 10km)
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@patsytheshark@mastodon.ie 2024-08-25 22:16
@fibonaccigirl omg! Have you seen this? I immediately thought of it you @mhoye v cool, thank you for sharing
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@zephyrxero@layer8.space 2024-08-25 22:26
@mhoye well that's a really awesome hack
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@zetasyanthis@dragon.style 2024-08-25 23:04
@mhoye That is so cool. :D
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@barrygoldman1@sauropods.win 2024-08-25 23:41
@mhoye u can convert pine cones to sunflowers with fibos too!
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@mameister4@mastodon.social 2024-08-26 05:19
@mhoye I also learned recently that you can convert between USD and GBP using the common expressions "a dime a dozen" and "two a penny". Accuracy varies though...
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@mikeolson@mastodon.social 2024-08-26 05:53
@mhoye @thatandromeda One of my favorite tricks. Makes me seem like a metric-to-imperial genius. Also phi is one of my phavorite numbers.
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@physikanne@bildung.social 2024-08-26 06:26
@mhoye cc #MINTEdu #PhysikEdu
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@PavelASamsonov@mastodon.social 2024-08-26 07:14
@mhoye you can also use the subway stations on the midtown portion of the 6 line in Manhattan to roughly convert from Fahrenheit to Celsius
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@lmss@linuxrocks.online 2024-08-26 08:00
@mhoye funny coincidence ... humm it's a coincidence right?!
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@rudy@mstdn.ca 2024-08-26 08:51
@mhoye this means i have to memorize the sequence (or mentally reconstruct it by adding terms to get to where i want) i find it much easier to just multiply by 1.6, which i can do in my head rather easily
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@mikemccaffrey@a11y.social 2024-08-26 16:43
@mhoye 🤯
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@julie@merida.hair 2024-08-26 21:19
@mhoye@mastodon.social But doctor, I am Fibonacci.
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@dpiponi@mathstodon.xyz 2024-08-26 23:15
@mhoye@mastodon.social You can go a step further, literally. Convert from inches to cm by taking two steps. So 21", say, is around 55cm (53.34cm to be precise).