Napier's Bones (The old calculator | Multiplication & Division)

𝐍𝐚𝐩𝐢𝐞𝐫'𝐬 𝐁𝐨𝐧𝐞𝐬
John Napier was a Scottish scientist, born in the 16th century, who spent much of his time inventing ways to make calculations easier. He’s best remembered for developing methods so that multiplication and division can be carried out using the simpler operations of addition and subtraction. Napier developed logarithms in 1614 and a device called Napier’s bones in 1617. Both these methods became commonly used in science and commerce.
𝐈𝐦𝐚𝐠𝐞𝐬, 𝐚𝐧𝐢𝐦𝐚𝐭𝐢𝐨𝐧𝐬 𝐚𝐧𝐝 𝐯𝐢𝐝𝐞𝐨𝐬 𝐜𝐫𝐞𝐝𝐢𝐭𝐬:
Pixabay
𝐎𝐮𝐫 𝐅𝐁 𝐏𝐚𝐠𝐞:
/ scienceworld-106933907...
𝐃𝐚𝐯𝐢𝐝'𝐬 𝐁𝐨𝐨𝐤𝐬
𝗪𝗲𝗶𝗿𝗱 𝗠𝗮𝘁𝗵𝘀: 𝗔𝘁 𝘁𝗵𝗲 𝗘𝗱𝗴𝗲 𝗼𝗳 𝗜𝗻𝗳𝗶𝗻𝗶𝘁𝘆 𝗮𝗻𝗱 𝗕𝗲𝘆𝗼𝗻𝗱
(www.amazon.com...)
𝗪𝗲𝗶𝗿𝗱𝗲𝗿 𝗠𝗮𝘁𝗵𝘀: 𝗔𝘁 𝘁𝗵𝗲 𝗘𝗱𝗴𝗲 𝗼𝗳 𝘁𝗵𝗲 𝗣𝗼𝘀𝘀𝗶𝗯𝗹𝗲
(www.amazon.com...)
𝗪𝗲𝗶𝗿𝗱𝗲𝘀𝘁 𝗠𝗮𝘁𝗵𝘀: 𝗔𝘁 𝘁𝗵𝗲 𝗙𝗿𝗼𝗻𝘁𝗶𝗲𝗿𝘀 𝗼𝗳 𝗥𝗲𝗮𝘀𝗼𝗻
(www.amazon.com...)
** The kindle versions are available
*** For more details : weirdmaths.com/
#napier​​​​​​ #bone​​​​​​ #rod

[@learningextension3297]

So helpful! Very clear and easy to understand. Thank you! 👏

[@ailurophile4341]

OH MY GOD. THIS IS A WORK OF A GENIUS!

[@TheDitronik]

The form of multiplication used in the 1202 Liber Abaci and 800 AD Islamic mathematics and known under the name of lattice multiplication. "Crest of the Peacock", by G.G, Joseph, suggests that Napier learned the details of this method from "Treviso Arithmetic", written in 1478.

[@hannahkyrkos]

Great video! I love the animations, this has been really clear and easy to understand way to present something that feels very complicated in writing

[@imalshaindumini7015]

yes, i am agree with you...

[@argonwheatbelly637]

I remember seeing sets of these made out of ivory no more than a quarter of an inch across the face. They were small, and you could fit 30 of them in a small 2"x2"x3" wooden box and take them with you. Dainty, yet sturdy. You could still make a decent set at double the scale. Easier to read, but convenient enough for using on a writing desk, and still easy to store.

[@argonwheatbelly637]

Also, don't forget that you can use them to find the square root of a number, and even the cube root.

[@ushasri9445]

S

[@MwaiZamadunga]

Really..how?

[@TemplarX2]

So multiplication and division do not really exist. They are just a function of addition and subtraction respectively.

[@TheDitronik]

The form of multiplication was used in the 1202 Liber Abaci and 800 AD Islamic mathematics and known under the name of lattice multiplication. "Crest of the Peacock", by G.G, Joseph, suggests that Napier learned the details of this method from "Treviso Arithmetic", written in 1478.

[@learner801]

This was such a great visualization and explanation ! tysm for the efforts u out into this! it gets so easy to learn through videos like this!

[@jhrykkjutku]

It's awesome but what do you do if you need two 7 to write 77 for exemple ? Do you borrow someone's 7 stick ?

[@thelastknight9367]

man!! A questiononly a genius could ask!!! Hats off man!

[@phi-cl5qw]

頭いい人がいたもんだ。

[@tonescape1]

Error in the narration at 8:57. He is showing that you write 72 below 81, but accidentally says "write it below 91".

[@learningextension4892]

Excellent video! Thank you 🙂

[@florenceelosiuba8486]

What happens when you have the same digit appearing more than once in a number?

[@kasibkhan2916]

That is simply longer than conventional method

[@tammybarrow6755]

Napier was one of my great great grandfathers

[@shin__harsh]

Very very important and good video Lot of thanks

[@tapasyabhandari6968]

Fantastic

[@Flyingsquirrel3am]

Oh I have to get me one of these ❤

[@SoptopornaBhattacharjee]

Wow,so much interesting 🤩🤩

[@littlescience7855]

i love when i think how john napier made it😍

[@TheDitronik]

The form of multiplication was used in the 1202 Liber Abaci and 800 AD Islamic mathematics and known under the name of lattice multiplication. "Crest of the Peacock", by G.G, Joseph, suggests that Napier learned the details of this method from "Treviso Arithmetic", written in 1478.

[@ermilo1733]

How to multiply 999999999×9999999999 on that thing

[@dokbob5795]

I ned more paper

[@khandahartv8542]

Thank you for the lesson

[@sachinkalra7289]

I learnt a bigger number of multiplications and divisions using napier's logs and bones in 1 day.

[@katyadiloliya1232]

Thank you so much sir .

[@lisajarvis3820]

I was absolutely crap at math in school ~ if I was shown this method at school ~ I most definitely would have been a heck of a lot better!! Shame it’s no longer being taught in our schools ~ maybe we would have an awful lot more people passing in math today!!

[@saraswotidhakal9878]

Really. We can just use calculator

[@laxuyt7776]

Thanks for information

[@thummamanjula2746]

How to multiply 0 digit it means 1000 × 4 . Please say the answer

[@ScienceWorld1]

ibb.co/Xz1Cg2g

[@Lord_Skeptic]

What about 40×1000

[@albertyeung5787]

very good explanation

[@frederickbowdler8169]

Abacus should be taught as well .😊

[@nop3noperson]

It's like a card trick...except it will not go wrong

[@vignesh0408]

👌🏼👌🏼

[@dypranks4941]

Good 😊👍

[@kosipelitalia1811]

❤

[@richardbailey2001]

The Chines teach a similar method in their schools.... but it's hand written .... multiplication and addition ...

[@mackdonaldalex7162]

Think big.. literally way

[@mmm_doty]

nindotaa

[@aditismom7400]

❤❤🎉

[@raykobarwari9253]

MAYA