short-period measurements
101Biology (Philosophy of) in the nineteenth century — Philosophy of biology in the nineteenth century Jagdish Hattiangadi THE PHILOSOPHY OF BIOLOGY The emergence of biology as a unified subject Students of history and of biology share a common delight: as they study the details of any subject, they… …
102Proper motion — The proper motion of a star is its angular change in position over time as seen from the center of mass of the solar system.[1] It is measured in seconds of arc per year, arcsec/yr, where 3600 arcseconds equal one degree.[2] This contrasts with… …
103Singlish — Spoken in Singapore Language family Creole Singlish Language codes ISO 639 3 …
104Younger Dryas — Three temperature records, the GRIP sequence (red) showing the Younger Dryas event at around 11.0 ka BP. The vertical axis shows δ18O, which is a temperature proxy showing the water molecule isotopic composition of 18O in an ice core …
105Jules Dumont d'Urville — This article is about the French explorer. For the French base in Antarctica at 64°40 S and 140°1 E, see Dumont d Urville Station. Jules Sébastien César Dumont d’Urville Jules Sébastien César Dumont d Urville (23 May 1790 – 8 May 1842) was a… …
106Monochromatic electromagnetic plane wave — In general relativity, the monochromatic electromagnetic plane wave spacetime is the analog of the monochromatic plane waves known from Maxwell s theory. The precise definition of the solution is a bit complicated, but very instructive. Any exact …
107Transcendental Meditation technique — This article is about the technique. For the movement, see Transcendental Meditation movement. The Transcendental Meditation technique is a specific form of mantra meditation[1] often referred to as Transcendental Meditation. It was introduced in …
108Hard disk drive — Hard drive redirects here. For other uses, see Hard drive (disambiguation). Hard disk drive Mechanical interior of a modern hard disk drive Date invented 24 December 1954 [1] …
109Tidal acceleration — is an effect of the tidal forces between an orbiting natural satellite ( i.e. a moon), and the planet (called the primary) that it orbits. It causes a gradual recession of a satellite in a prograde orbit away from the primary, and a corresponding …
110Geology of the Moon — The geology of the Moon (sometimes called selenology, although the latter term can refer more generally to lunar science ) is quite different from that of the Earth. The Moon lacks a significant atmosphere and any bodies of water, which… …
