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[-] theroastedtoaster@lemmy.world 139 points 9 months ago

Fibonacci/Golden ratio = 1.618 Kilometres in 1 mile = 1.609

Conversion is off by less than 1%, not bad at all

[-] Evil_Shrubbery@lemm.ee 29 points 9 months ago

Yeah, it's nice an mysterious the first moment you hear about this but all the romance is gone once you think about how it works.

[-] kogasa@programming.dev 20 points 9 months ago

By far the most complicated part is the fact that the ratio of successive terms in the Fibonacci sequence approaches a specific number (which happens to be the golden ratio, which happens to be close to the ratio of km/mi).

[-] Anticorp@lemmy.world 8 points 9 months ago

Great, now I have two charts to memorize.

[-] Lux@lemmy.blahaj.zone 14 points 9 months ago

You only have to memorize how the fibbonaci sequence works, which is just addind the previous 2 numbers together to get the next

[-] gandalf_der_12te@feddit.de 3 points 9 months ago

You only have to memorize ...

and have a lot of computing power available.

That algorithm ain't running itself.

[-] akariii@lemmy.blahaj.zone 4 points 9 months ago

you're welcome

[-] Stretch2m@lemm.ee 3 points 9 months ago

But we only get one number to convert. We don't know what the previous number is in the sequence without a chart up to that number.

[-] Aqarius@lemmy.world 2 points 9 months ago

The starting numbers are 1 and 1.

[-] don@lemm.ee 43 points 9 months ago
[-] Deebster@lemmy.ml 28 points 9 months ago
[-] Carighan@lemmy.world 10 points 9 months ago

Here's the sound missing in that gif.

[-] HonoraryMancunian@lemmy.world 1 points 9 months ago

That was fun

[-] Ephera@lemmy.ml 1 points 9 months ago

That triangle solo, though.

[-] can@sh.itjust.works 9 points 9 months ago
[-] omgitsaheadcrab@sh.itjust.works 7 points 9 months ago
[-] can@sh.itjust.works 3 points 9 months ago
[-] casmael@lemm.ee 2 points 9 months ago

All I know is I can can the can can the only question is can a can can the can quick enough to can can the can can

[-] palordrolap@kbin.social 42 points 9 months ago

Fun fact: If you have a scientific calculator (literal or app) but no other conversion tool available, the conversion factor between miles and kilometres is almost exactly ln 5. Disturbingly close in fact.

That's fewer keypresses than generating the Golden ratio or working out Fibonacci numbers. But if all you have is your head then, yeah, the Fibonacci trick is good enough in a pinch.

[-] BreadOven@lemmy.world 8 points 9 months ago

Wow, that's pretty cool. Thanks.

[-] Spzi@lemm.ee 29 points 9 months ago

There are many such ways to memorize conversion ratios. Admittedly, this one is particularly cool, since you can construct it from the fairly trivial fibonacci series. But I still feel, it's no replacement for the actual solution; get rid of imperial and adopt metric.

[-] kryptonianCodeMonkey@lemmy.world 13 points 9 months ago

That's actually very useful.

this post was submitted on 19 Jan 2024
511 points (100.0% liked)

Math Memes

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