Ẓeṛ aɣbalu n Isaac Newton

{{infobox biography| caption ='''Isaac Newton''' di 1689}}

<div style="font-family:Arial Unicode MS, Tahoma;">D amussnak (mathématicien), d amusnagamaw (physicien) aglizi, '''Isaac Newton''' d yiwen seg wid iqqimen deg umezruy i lebda, acku tiliwa n tussna i d-yeǧǧa ur ttɣarayent ara. Newton gar wid i d-isnulfan asiḍen (calcul), yufa-d tifeɣt n tiddit n tafat (optique).Ɣef umussu (amimeḍ), Newton isnulfa-d kraḍ ilugan, seg tid I d-iffeɣen alugen n uselmem anmeɣrad (gravitation universelle).

Newton sir Isaac ilul ass n 25 dujember [[1642]] di temdint Woolsthorpe (tamurt n Legliz), mi zrin sin wagguren ɣef tmettant n baba-s. Yemma-s Hannah teǧǧa-t i jidda-s ad t-id-tessker.

Newton ikfa taɣuri-ines tamezwarut di Trinity College n Grantham. Deg useggas [[1661]] ikcem ɣer tesdawit n Cambridge ikemmel taɣuri armi d aseggas [[1665]] ansa i d-iffeɣ s turagt (licence), aseggas-a i d-teḍra temsalt n tteteffaḥt is-d ildin allen ɣef ujebbud n tfekkiwin (attraction des corps).

Deg useggas [[1667]] Newton yuɣal d imekki di tesdawit Cambridge. Deg useggas [[1666]] isnulfa-d asiḍen (calcul). Deg useggas [[1669]] yuɣ amḍiq d aselmad n tusnakt di tesdawit n Cambridge.
Newton yerra aṭas lmendad-is ar tiddit n tafat, deg useggas [[1672]] Newton yeɛreḍ ad d-yaf tifeɣt n ini (couleur) n tafat, inna-d: “Tafat d asmlili n iẓenẓaren n ini”.

Deg useggas [[1686]] isnulfa-d tilḥi (dynamique) s lsas n kraḍ ilugan n umussu:

* Amenzay amenzu: Tafekka ur tettmimiḍ ara neɣ amussu-ines ur ittbeddil ara (tazzla-ines), ma illa azal n tmernit n imsedda (somme véctorielle) n tezmert i tt-yeɛnan d ilem.

* Amenzay wis-sin : Lsas n tilḥi
Newton, iqqen timzizzelt (accéleration) n tfekka ɣer tezmert i tt-yeɛnan:
F=ma

F : tazmert (N)
m : tazsit n tfekka (kg)
a: timzizzelt m/s2

* Amenzay wis-kraḍ: Tigawt d tesdmert (action-réaction)
Ma illa tafekka 1 tedemmir tafekka nniḍen 2 s tezmert f1,2, ihi, tafekka tis-snat tettara-d I tfekka 1 tazmert f2,1:
f1/2+f2/1=0

Newton iddem-d ilugan-a iseqdec-iten ɣer wid n Kepler, sway i d-yufa:
kra n tfekka illan di tallunt (espace) neɣ deg umḍal, tettaɣ-itt tazmert i wumi semman aselmem (gravité).
Yura daɣen Philosophiae Naturalis Principia Mathematica deg useggas n 1687. Ilmend n wayen iqdec d wayen i d-ifka, isem-is yuɣ aferdis (unité) n tezmert (N).</div>

=== Tamselyut ===
* [http://www.imyura.net Imyura.net, Mack A.U. d Yusef A.Y.] {{Webarchive|url=https://web.archive.org/web/20130812220445/http://www.imyura.net/ |date=2013-08-12 }}
* [http://commons.wikimedia.org/wiki/Isaac_Newton?uselang=fr Commons]

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