Hey, what happened with Spirit, one of Mars Exploration Rovers?
The rover team can not get the response from Mars.
http://www.jpl.nasa.gov/news/news.cfm?release=2010-252&cid=release_2010-252&msource=2010252&tr=y&auid=6731633
It is winter in the area where she is working. Apparently, she can not move because of cold.
Although they are designed to work for one or two years, they have been working for 6 years!!!
In several years, they have worked hardly.
In this picture, Spirit has a mobility trouble. Her left-front wheel is caught by sand.
Maybe, she became tired after her hard work.
7/30/2010
Desert on Titan
Wow! I found this picture on NASA's web site!
http://www.jpl.nasa.gov/news/news.cfm?release=2010-251&cid=release_2010-251&msource=c20100729&tr=y&auid=6723160
The upside picture is the surface of Titan, the largest moon of Saturn, and the downside picture is
http://www.jpl.nasa.gov/news/news.cfm?release=2010-251&cid=release_2010-251&msource=c20100729&tr=y&auid=6723160
The upside picture is the surface of Titan, the largest moon of Saturn, and the downside picture is
7/28/2010
Catenary
It has been long time since I posted last one.
I was thinking about catenary (Not only this one).
When I was a child, I thought the shape of a hanging rope was the parabola.
But, it is actually the other like called catenary.
Catenary is expressed like this.
y=a cosh(x/a)
The method how to derive the expression is explained here. (this page is Japanese)
http://aozoragakuen.sakura.ne.jp/taiwa/taiwaNch04/node48.html
I was thinking about catenary (Not only this one).
When I was a child, I thought the shape of a hanging rope was the parabola.
But, it is actually the other like called catenary.
Catenary is expressed like this.
y=a cosh(x/a)
The method how to derive the expression is explained here. (this page is Japanese)
http://aozoragakuen.sakura.ne.jp/taiwa/taiwaNch04/node48.html
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