... The choice of which type of electricity is called "positive" and which "negative" was made around 1750 by Ben Franklin, early American scientist and man of many talents (the stamp on the left commemorates his role as first US postmaster--and colonial postmaster before that). ... Franklin knew of two types of electric charge, depending on the material one rubbed. ... Later, when electric batteries were discovered, scientists naturally assigned the direction of the flow of current to be from (+) to (-...

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... Within the transnational Access program of SOLARNET, European investigators can apply for observing time with the European instruments IBIS and ROSA , which are installed at the Dunn Solar Telescope of the US National Solar Observatory ( DST/NSO ). ... Periodic calls for proposals will be published for requesting SOLARNET observing time with the European instruments IBIS and ROSA, installed at the Dunn Solar Telescope of the US National Solar Observatory (DST/NSO). ... SOLARNET Access . ...

Eyepieces Forum Message . Forums: . ... Eyepieces ћ Meade ћ Misc. ... Post . ... Re:Decisions, Decisions - Help Requested.. ... Post Message | ... Posted by Jarvis Krumbein on January 14, 2003 18:28:34 UTC . ... Decision Made... - imhotep - January 17, 2003 - 23:43 UTC . ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

This module provides for forensic logging of the requests made to the server . ... Logging is done before and after processing a request, so the forensic log contains two log lines for each request. ... Module: mod_log_forensic . ... Each log entry is assigned unique ID which can be associated with the request using the normal CustomLog directive. mod_log_forensic creates a token called forensic-id , which can be added to the transfer log using the %{forensic-id}n format string. ...

Space VLBI Mission RadioAstron Announcement of Opportunity -- 1 for the period July 2013 ­ 30 June 2014 Key Science Program ( KSP ) Final Notes Proposals Due: 8 February 2013, 23:59 UT 1 RadioAstron KSP meeting follow-up Based on the fruitful discussions, questions and suggestions from the RadioAstron Key Science program meeting in Bonn (December 3-4, 2012), we would like to emphasize the following specific aspects for the preparation of the AO-1 ...

... Information about a variety of different calendars for different cultures (e.g., Christian, Jewish, Muslim, Chinese, Hindu etc.) ... In addition, the Chinese had two different ways of interpreting and observing celestial events. One way the Chinese used astronomy was known as lifa; it was a discipline that aimed to understand the regularities and the predictable events in the celestial system through careful, observations, measurements and records. ... back to Teachers' Newsletter Main Page ...