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View Full Version : Is it safe to look naked-eye at the diamond necklace stage of an eclipse?


esperanto@gmail.com
Apr4-05, 04:33 AM
<jabberwocky><div class="vbmenu_control"><a href="jabberwocky:;" onClick="newWindow=window.open('','usenetCode','toolbar=no, location=no,scrollbars=yes,resizable=yes,status=no ,width=650,height=400'); newWindow.document.write('<HTML><HEAD><TITLE>Usenet ASCII</TITLE></HEAD><BODY topmargin=0 leftmargin=0 BGCOLOR=#F1F1F1><table border=0 width=625><td bgcolor=midnightblue><font color=#F1F1F1>This Usenet message\'s original ASCII form: </font></td></tr><tr><td width=449><br><br><font face=courier><UL><PRE>Hi there!\n\nI live in Panama. I will watch the April 8, 2005 hybrid Eclipse in\nPenonome, a town placed in the middle of Panama, almost exactly in the\ncenter of the shadow path.\n\nIn Space.com I read: "So just before the transition from annular to\ntotal and later, just after the transition from total back to annular,\nthe eclipse will become something neither annular nor total: it will be\na broken annular. As lunar mountains protrude onto the hairline-thin\nring of the Sun, it will be seen not as an unbroken ring but an\nirregular, changing, sparkling sequence of arcs, beads and diamonds\nvery briefly encircling the Moon: a "diamond necklace" effect! This is\na spectacle that viewers in the Panama and possibly Costa Rica might\nsee."\nReference: http://www.space.com/spacewatch/050401_solar_eclipse.html\n\nMy question is: during these brief seconds of "anularity" or whatever,\nduring which the diamond necklace can be seen, is it safe to look at\nthe sun directly?\n\nI know that for the rest of the event, looking directly naked-eye is a\nsure recipe for blindness. But during the "necklace" part of the show,\ncan I look directly safely?\n\nRoberto\n\n</UL></PRE></font></td></tr></table></BODY><HTML>');"> <IMG SRC=/images/buttons/ip.gif BORDER=0 ALIGN=CENTER ALT="View this Usenet post in original ASCII form">&nbsp;&nbsp;View this Usenet post in original ASCII form </a></div><P></jabberwocky>Hi there!

I live in Panama. I will watch the April 8, 2005 hybrid Eclipse in
Penonome, a town placed in the middle of Panama, almost exactly in the
center of the shadow path.

In Space.com I read: "So just before the transition from annular to
total and later, just after the transition from total back to annular,
the eclipse will become something neither annular nor total: it will be
a broken annular. As lunar mountains protrude onto the hairline-thin
ring of the Sun, it will be seen not as an unbroken ring but an
irregular, changing, sparkling sequence of arcs, beads and diamonds
very briefly encircling the Moon: a "diamond necklace" effect! This is
a spectacle that viewers in the Panama and possibly Costa Rica might
see."
Reference: http://www.space.com/spacewatch/050401_solar_eclipse.html

My question is: during these brief seconds of "anularity" or whatever,
during which the diamond necklace can be seen, is it safe to look at
the sun directly?

I know that for the rest of the event, looking directly naked-eye is a
sure recipe for blindness. But during the "necklace" part of the show,
can I look directly safely?

Roberto

Cl.Massé
Apr6-05, 09:41 PM
<jabberwocky><div class="vbmenu_control"><a href="jabberwocky:;" onClick="newWindow=window.open('','usenetCode','toolbar=no, location=no,scrollbars=yes,resizable=yes,status=no ,width=650,height=400'); newWindow.document.write('<HTML><HEAD><TITLE>Usenet ASCII</TITLE></HEAD><BODY topmargin=0 leftmargin=0 BGCOLOR=#F1F1F1><table border=0 width=625><td bgcolor=midnightblue><font color=#F1F1F1>This Usenet message\'s original ASCII form: </font></td></tr><tr><td width=449><br><br><font face=courier><UL><PRE>&lt;esperanto@gmail.com&gt; a écrit dans le message de\nnews:1112565160.881968.197350@g14g2000cwa.goog legroups.com...\n\n&gt; My question is: during these brief seconds of "anularity" or whatever,\n&gt; during which the diamond necklace can be seen, is it safe to look at\n&gt; the sun directly?\n&gt;\n&gt; I know that for the rest of the event, looking directly naked-eye is a\n&gt; sure recipe for blindness. But during the "necklace" part of the show,\n&gt; can I look directly safely?\n\n*During* this stage, you can. But the problem is you don\'t know when it\nends, and when it ends, your iris is largely open, and much light will\nhit your retina. The risk isn\'t worth to be run, unless you only have a\nglimpse. But time runs very fast in such a case.\n\n--\n~~~~ clmasse on free F-country\nLiberty, Equality, Profitability.\n\n</UL></PRE></font></td></tr></table></BODY><HTML>');"> <IMG SRC=/images/buttons/ip.gif BORDER=0 ALIGN=CENTER ALT="View this Usenet post in original ASCII form">&nbsp;&nbsp;View this Usenet post in original ASCII form </a></div><P></jabberwocky><esperanto@gmail.com> a écrit dans le message de
news:1112565160.881968.197350@g14g2000cwa.googlegr oups.com...

> My question is: during these brief seconds of "anularity" or whatever,
> during which the diamond necklace can be seen, is it safe to look at
> the sun directly?
>
> I know that for the rest of the event, looking directly naked-eye is a
> sure recipe for blindness. But during the "necklace" part of the show,
> can I look directly safely?

*During* this stage, you can. But the problem is you don't know when it
ends, and when it ends, your iris is largely open, and much light will
hit your retina. The risk isn't worth to be run, unless you only have a
glimpse. But time runs very fast in such a case.

--
~~~~ clmasse on free F-country
Liberty, Equality, Profitability.