Kepler's laws, A set of three scientific laws describing the motion of planets around the Sun published by Johannes Kepler (1571–1630). They define the shape of planetary orbits (1. All planets move along elliptical orbits with the Sun located at one focus.), explain how a planet's velocity changes during an orbit (2. During each orbit, a line connecting a planet with the Sun sweeps out equal areas in equal time intervals.), and relate a planet's orbital period to its distance from the Sun (3. The square of the planet's orbital period (P) is proportional to the cube of its semimajor axis).

Cat: Astronomy (Kepler's laws) ^Next

>>開普勒定律

開, 普, 勒, 定, 律

史納普

shiˇ naˋ puˇ

(Snab)

Snab

史, 納, 普

川普

chuanˉ puˇ

(Trump)

Trump

Cat: Name (Trump) ^Next

川, 普

聖多美和普林西比

shengˋ duoˉ meiˇ hanˋ puˇ linˊ xiˉ biˇ

(São)

São Tomé And Príncipe

Cat: Name-Place-Country-Nation (São Tomé And...) ^Next

聖, 多, 美, 和, 普, 林, 西, 比

科普

keˉ puˇ

(Popular, Science)

Popular science, Science

科, 普

法普

faˇ puˇ

(Fap, Fop)

Fop, Fap

Cat: Name (Fap) ^Next Cat: Name (Fop) ^Next

法, 普

艾普索波

aiˋ puˇ suoˇ boˉ

(Apthorp)

Apthorp

Cat: Name (Apthorp) ^Next

艾, 普, 索, 波

赫茲斯普朗格羅素圖

heˋ ziˉ siˉ puˇ langˇ geˊ luoˉ suˋ tuˊ

(Hertzsprung-Russell, Scatter)

Hertzsprung-Russell Diagram, Scatter plot of stars showing the relationship between the stars' absolute magnitudes or luminosities and their stellar classifications or effective temperatures, created independently in 1911 by Ejnar Hertzsprung and by Henry Norris Russell in 1913

Cat: Astronomy (Hertzsprung-Russell Diagram) ^Next

>>赫茲斯普朗格羅素圖

赫, 茲, 斯, 普, 朗, 格, 羅, 素, 圖

克普爾

keˋ puˇ erˇ

(Kapoor)

Kapoor

Cat: Name (Kapoor) ^Next

克, 普, 爾

吉普

jiˊ puˇ

(Jeep)