Alfred Harker

Alfred Harker

Alfred Harker was the first man to successfully determine the distance between the Earth and the moon to within a tenth of a mile.

This discovery is important because it allowed for weight/fuel conservation for the original Apollo missions. Harker used angular gravitational interactions between the moon, the earth, and large meteorites to determine the gravitational pull between the earth and the moon, the speed of the orbit of the moon, and thus the distance between the two.

Harker retired from NASA/JPL work in the early seventies and later went on to serve as the chancellor of Santa Rosa Junior College in Santa Rosa, California.


Wikimedia Foundation. 2010.

Игры ⚽ Поможем сделать НИР

Look at other dictionaries:

  • Alfred Harker — (19 février 1859 28 juillet 1939) est un géologue britannique spécialisé dans la pétrologie et la pétrographie. Sommaire 1 Biographie 2 Recherches 3 Récompenses …   Wikipédia en Français

  • Alfred Harker (petrologist) — Alfred Harker FRS (February 19, 1859 July 28, 1939) was an English geologist who specialised in petrology and interpretive petrography. He worked for the Geological Survey of Scotland and conducted extensive surveying and geological studies of… …   Wikipedia

  • Harker — is an English surname. Many geographic locations are named after individuals with the Harker surname.Individuals*Alfred Harker (petrologist) (1859 1939), English geologist and petrologist *Alfred Harker, the first man to determine the distance… …   Wikipedia

  • Harker Glacier — is one of several tidewater glaciers on Cumberland Bay. Type Tidewater glacier …   Wikipedia

  • Alfred Blunt — (1879 1957), second bishop of Bradford (1931 1955). He is best known for a speech that exacerbated the Abdication Crisis of Edward VIII. [http://www.thetelegraphandargus.co.uk/display.var.1053791.0.notsoblunt words that stopped coronation.php]… …   Wikipedia

  • Alfred Hitchcock — Infobox actor name = Alfred Hitchcock birthdate = Birth date|1899|8|13 location = Leytonstone, London deathdate = Death date and age|1980|4|29|1899|8|13 deathplace = Bel Air, Los Angeles resting place = Pacific Ocean birthname = Alfred Joseph… …   Wikipedia

  • Alfred Hitchcock — Pour les articles homonymes, voir Hitchcock. Alfred Hitchcock …   Wikipédia en Français

  • Mount Harker — Elevation 914 m (2,999 ft) Location Location …   Wikipedia

  • Dorsa Harker — is a wrinkle ridge at 14°30′N 64°00′E / 14.5°N 64.0°E / 14.5; 64.0 in Mare Crisium on the Moon. It is 197 km long and was named after Alfred Harker, an …   Wikipedia

  • Dorsa Harker — Der Dorsa Harker ist ein Meeresrücken auf dem Erdmond. Er wurde 1976 entdeckt und nach dem britischen Petrologen Alfred Harker benannt. Sein Durchmesser beträgt 197 Kilometer und liegt bei 14° 30 N / 64° O. Siehe auch Liste der Berge und Gebirge… …   Deutsch Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”