タグ

物理学

98 件の記事

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

トルク回転力角運動量ニュートンメートル
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

参照系座標系慣性系非慣性系
Fluorescein aqueous solutions, diluted from 10000 to 1 part per million in intervals of ten-fold dilution. At 10000 ppm the solution is a deep red colour. As the concentration decreases, the colour becomes greenish-orange, then a vibrant yellowish-green, with the final 1 ppm sample a very pale yellowish-green.

パーツパー表記(ppm/ppb/ppt)の定義と科学的な活用法

ppmppbppt無次元量
📖

パスカル(Pa)とは?圧力の単位の定義から実用例までを解説

パスカルPa圧力単位SI単位系
Aneroid barometer for household use from c. 1925

標準大気圧(atm)の定義と単位換算の完全解説

標準大気圧atmパスカル気圧 単位
Statue of Nikola Tesla outside the National Library of Serbia; inscribed on the plaque is the formula T = W b / m 2 {\textstyle \mathrm {T={Wb}/{m^{2}}} }

テスラ(T)とは?磁束密度の単位とその定義を詳しく解説

テスラ磁束密度SI単位系ニコラ・テスラ
📖

M/s²(メートル毎秒毎秒)とは?加速度の単位を詳しく解説

m/s2加速度SI単位系物理学
In straight and level flight, lift (L) equals weight (W). In a steady level banked turn of 60°, lift equals double the weight (L = 2W). The pilot experiences 2 g and a doubled weight. The steeper the bank, the greater the g-forces.

Gフォース(重力加速度)の仕組みと人体への影響

Gフォース重力加速度加速度G-LOC
Velocity of the particle m with respect to the origin O can be resolved into components parallel to (v∥) and perpendicular to (v⊥) the radius vector r. The angular momentum of m is proportional to the perpendicular component v⊥ of the velocity, or equivalently, to the perpendicular distance r⊥ from the origin.

角運動量の物理学回転運動を支配する基本原理

角運動量慣性モーメントトルク角運動量保存の法則
Uncrewed and crewed spacecraft missions have been used to image distant locations within the Solar System, such as this Apollo 11 view of Daedalus crater on the far side of the Moon.

自然科学の歴史と体系古代の哲学から現代の専門分化まで

自然科学科学史自然哲学科学的手法
Capillary water flow up a 225 mm-high porous brick after it was placed in a shallow tray of water. The time elapsed after first contact with water is indicated. From the weight increase, the estimated porosity is 25%.

毛細管現象の仕組みと科学液体が自然に上昇する理由

毛細管現象表面張力付着力凝集力
The shapes of two massive galaxies in this image evolved under the effects of gravity.

重力の科学ニュートンからアインシュタイン、そして現代宇宙論まで

重力万有引力の法則一般相対性理論ニュートン