national gravity net
61Ibn al-Haytham — Infobox Muslim scholars | notability = Muslim scientist| era = Islamic Golden Age| color = #cef2e0 | | image caption = Ibn al Haytham drawing taken from a 1982 Iraqi 10 dinar note. | | name = Unicode|Abū ‘Alī al Ḥasan ibn al Ḥasan ibn al Haytham… …
62B-1 Lancer — Infobox Aircraft name = B 1 Lancer type = Strategic bomber national origin = United States manufacturer = North American Rockwell Rockwell International Boeing caption = A B 1B Lancer in flight. designer = first flight = 23 December 1974… …
63Electricity — (from the Greek word ήλεκτρον, (elektron), meaning amber, and finally from New Latin ēlectricus , amber like ) is a general term that encompasses a variety of phenomena resulting from the presence and flow of electric charge. These include many… …
64Ecology — For other uses, see Ecology (disambiguation). Ecology …
65Mercury (planet) — Mercury  ☿ …
66Plate tectonics — The tectonic plates of the world were mapped in the second half of the 20th century …
67Philippine–American War — ] cite news first =Ambeth R. last =Ocampo year =2005 month =January 7 title =The First Filipino Novel journal =Philippine Daily Inquirer] cite web title =Chronology of Significant Events Relating to the Career of Emilio Aguinaldo with Respect to… …
68Moon landing — For other uses, see Moon landing (disambiguation). Still frame from the video transmission of Neil Armstrong stepping onto the surface of the Moon at 02:56 UTC on 21 July 1969. An estimated 500 million people worldwide watched this event,… …
69mining — /muy ning/, n. 1. the act, process, or industry of extracting ores, coal, etc., from mines. 2. the laying of explosive mines. [1250 1300; ME: undermining (walls in an attack); see MINE2, ING1] * * * I Excavation of materials from the Earth s… …
70Magellan (spacecraft) — Magellan Artist s depiction of Magellan at Venus Operator NASA / JPL Major contractors Martin Marietta / Hughes Aircraft …
