WDN Logo

home-icon Home / Events on 13 August / Heinrich Louis d’Arrest Birthday

Heinrich Louis d’Arrest Birthday

Heinrich Louis d’Arrest Birthday - 13 August 1822

Heinrich Louis d’Arrest was born on 13 August, 1822

German astronomer and student of Johann Gottfried Galle who is known for contributions in the discovery of the planet Neptune. After receiving the calculations by French mathematician, Urbain Le Verrier, the two German scientists pointed the telescope and observed the planet Neptune for the first time. This is regarded as an important turning point in 19th Century astronomy.

FYI, Neptune had first been observed by Galileo Galilei, but the great Italian astronomer had classified it as a fixed star.

Image Source: Public Domain, https://commons.wikimedia.org/w/index.php?curid=1182456


Your comments
Star icon IMPORTANT Have a question / problem? Click here to ask an expert.

Web browser funny images and jokes

Sponsored Links


How do I view a deleted web page?
Is there a way to view a deleted web page - one that is no longer available? Yes there is and the solution is quite simple. [more...]


The popular Dancing Baby animation which went viral in the 1990s employed no motion capture. Everything was created and rendered on the computer. The video was created using Autodesk 3ds Max (formerly 3D Studio Max). It was made by the team that had developed Character Studio, a tool for the 3D computer graphics program. The popularity of the Dancing Baby soared after John Woodell, a web developer, created an animated gif from the original movie and put it up on his employers web site. From there, the highly compressed animated gif file spread quickly around the world and started appearing on other web sites, commercials, music videos and even TV programs. Image Source: By [1], Fair use, Link [more...]

Share on Whats app Share on Facebook Share on Twitter Share on Google plus