物理学の記事（6ページ）

An observer O, situated at the origin of a local set of coordinates – a frame of reference F. The observer in this frame uses the coordinates (x, y, z, t) to describe a spacetime event, shown as a star.

参照系とは何か物理学における座標系と観測フレームの決定的な違い

A particle is located at position r relative to its axis of rotation. When a force F is applied to the particle, only the perpendicular component F⊥ produces a torque. This torque τ = r × F has magnitude τ = |r| |F⊥| = |r| |F| sin θ and is directed outward from the page.

トルクの物理学的基礎とメカニズム回転運動を支配する力の正体

$Émilie du Châtelet (1706–1749) was the first to publish the relation for kinetic energy E kin ∝ m v 2 {\displaystyle E_{\text{kin}}\propto mv^{2}} , derived from the experimental observation of objects dropped into clay. (Portrait by Maurice Quentin de La Tour.)$

運動エネルギーの基礎から相対論的視点まで

運動エネルギー物理学古典力学相対論

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マイクロ秒（μs）とは？定義から身近な具体例までを徹底解説

マイクロ秒μsSI単位系時間単位

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A sphere rotating (spinning) about an axis

回転運動の科学幾何学から天文学、スポーツまで

回転運動自転公転角速度

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A page from an 1837 edition of the ancient Greek philosopher Aristotle's Physica, a book addressing a variety of subjects including the philosophy of nature and topics now part of its modern-day namesake: physics.

アリストテレス物理学古代ギリシャの自然哲学とその体系

アリストテレス物理学自然哲学四元素説

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Cicero Discovering the Tomb of Archimedes (1805) by Benjamin West

アルキメデス古代ギリシャが誇る数学と物理学の天才

アルキメデスシラクサアルキメデスの原理円周率

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$Front page of the Opticae Thesaurus, which included the first printed Latin translation of Alhazen's Book of Optics. The illustration incorporates many examples of optical phenomena including perspective effects, the rainbow, mirrors, and refraction.$