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Tervehdys!
Tommoseen lainaukseen törmäsin myös.
Lightning is a huge electrical discharge; thunder is the sound waves
produced by the very rapid expansion (due to heating) of the atmosphere
through which the lightning passes. There is probably not lightning and
certainly not thunder in the near-vacuum of space; however, lightning
has been observed (by space probes) on Jupiter, and there is evidence of
lightning on Venus, Saturn, Uranus, Neptune, and Saturn's moon Titan. No
doubt wherever there is lightning on any of these bodies there is also
what we would call thunder (but probably no inhabitant to hear it!)
lähde: http://www.newton.dep.anl.gov/askasci/ast99/ast99040.htm
t: Juha "gurne" Gardiemeister
-----Alkuperäinen viesti-----
Lähettäjä: owner-myrskybongarit-l_ät_mail.ursa.fi
[mailto:owner-myrskybongarit-l_ät_mail.ursa.fi] Puolesta Teemu Mäntynen
Lähetetty: 25. lokakuuta 2004 20:55
Vastaanottaja: myrskybongarit-l_ät_mail.ursa.fi
Aihe: [myrskybongarit-l] Myrskybongailua avaruudessa
Lainailenpa taas Slashdottia:
"Titan's Alien Thunder" [*1]
"What is not being reported much about the fascinating Huygens descent
to the surface of Saturn's largest moon, Titan, is its remarkable
microphone[*2]. In the silence of space, the probe offers a platform for
listening to alien thunder while watching the lightning strike on this
alien world--the only moon with an atmosphere thicker than our
terrestrial one. The probe detaches from Cassini on Christmas for its
atmospheric entry on 14 January 2005. The landing target on Titan
borders a bright-dark region thought to be an oil-rich shoreline.
Huygens can float for a few hours while still broadcasting if it lands
in a lake of oil."
[*1]
http://science.slashdot.org/article.pl?sid=04/10/25/1233212
(sivulta löytyy enemmänkin asiaa koskevia linkkejä)
[*2]
http://www.astrobio.net/news/article1257.html
--
Teemu Mäntynen
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