. To move files and directories from one place to another use the mv (move) command: mv [option] filename1 filename2 directory1 directory2 filename directory . You can also change the name of a file or directory by moving it. **Caution** . Examples . Did You Know? .

This group of four pages describes how the Arecibo 430 MHz radar makes simple measurements in the ionosphere. ... Radar Reflections From the Ionosphere . ... Or How are radio and TV stations like radars?) ... Consider two radio stations located on a mountain transmitting to a nearby city. ... A radar is like a radio station, but it has a receiver that picks up radio waves reflected from objects (targets). ... Although a radio station transmits continously, a radar can transmit short bursts of waves. ...

. Aristarchus was extremely clever and also figured out a way to determine the ratio of distances between the earth and the moon and the earth and the sun. While wrong, at least he reasoned that the sun was much farther from the earth than the moon. Just Try and Follow this! . Summary of Greek Science .

ATNF Home . About ATNF . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Staff list | Student list | ... Parkes radio telescope . ... Australia Telescope Online Archive (ATOA) . ... VLBI . ... CSIRO ATNF Data Archives . ... Visiting Parkes radio telescope . ... Parkes radio telescope webcam . ... reference observations. ... HOWEVER, I believe that the PCFS will do little for the Tsys problem. ... to look into continuous Tsys systems for all telescopes (and the EVN . ...

... XPA and the now-defunct funtools have moved to GitHub! Please visit: . xpa @ https://github.com/ericmandel/xpa . funtools (not supported but ...) @ https://github.com/ericmandel/funtools for the latest version. Also available on GitHub: . ... The public release xpa version 2.1.15 is available here . Please upgrade at your convenience. ... Its available here . ... Software to benefit the astronomical community and especially the X-ray astronomy community. ... saord@cfa.harvard.edu . ...

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... I got all my tests for check_over to pass and moved on to writing the first test for do_kernel_square. ... I got all the tests working again and modified the pixmap code to create a float array instead of a double and use a half pixel grid. ... I got all the test cases to run and then modified the cdrizzlebox code to be zero based instead of one based. ... Dobox is the top of the hierarchy of code that needs to be tested for errors after rewriting map_value. ... And I got the tests to work again. ...

The Doppler shift is the effect of sound increasing or decreasing in pitch as an object moves towards or away from you. ... Light works the same way, except light is shifted to redder colours when an object is moving away, and to blue colours when an object is travelling towards us. ... Almost every object he observed had its light stretched to redder colours, indicating essentially everything in the Universe was moving away from us. ... So the Hubble constant tells us how old the Universe is. ...

Isaac Newton . Isaac Newton was born in 1642, the year Galileo died. ... Three problems intrigued scientists in Newton's time: the laws of motion, the laws of planetary orbits, and the mathematics of continuously varying quantities--a field nowadays known as [differential and integral] calculus. ... It is all in Newton's third law: as your legs propel your body towards the dock, they also apply to the boat an equal force in the opposite direction, which pushes it away from the dock. ...

A Mysterious Streak Above Hawaii . ... Credit Copyright: Night Sky Live Collaboration Explanation: What in heavens-above was that? Not everything seen on the night sky is understood. The Night Sky Live (NSL) project keeps its global array of continuously updating web cameras (CONCAMs) always watching the night sky. ... The NSL team might then have disregard the streak as a satellite, but no record of it was found in the heavens-above.com site that usually documents bright satellite events. ...

Bigbang Forum Message . Forums: . ... Big Bang | ... Hubble's Law And The Big Bang . ... Hubble?s Law tell us that the universe is expanding and the farther away an object is, the faster it is moving. ... Please indulge my curiosity and offer me your opinion on these few problems I see with Hubble?s Law and Constant and the Big Bang. ... www.astronomy.net . ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... redirect an entire server or directory to a single URL . ... stop/restrict robots . proxy SSL requests through your non-SSL server . There are two chief ways to redirect all requests for an entire server to a single location: one which requires the use of mod_rewrite , and another which uses a CGI script. First: if all you need to do is migrate a server from one name to another, simply use the Redirect directive, as supplied by mod_alias : Redirect / http://www.apache.org/ . ...

. Warning: by definition this page is and will always be under construction: . to left a recent . photograph of me with a . link to another photograph of me . status: Jan. 13 -2004 . you can contact me job-related under hukaufl@eso.org . and for private things please use: diekaeufls@yahoo.de .