Apache's support for content negotiation has been updated to meet the HTTP/1.1 specification. It can choose the best representation of a resource based on the browser-supplied preferences for media type, languages, character set and encoding. ... Content-Language: . ... The reason for setting this language quality factor for variant with no language to a very low value is to allow for a default variant which can be supplied if none of the other variants match the browser's language preferences. ...

Static Fourier spectrometers are often used for spectral measurements of the ionosphere emissions. There are two main advantages of Fourier spectrometers (FS) - large geometric factor and high spectral resolution; these parameters are two orders better than for grating spectral instruments. ... In scanning Fourier spectrometer optical and electric modulation of signal is used to avoid this problem, for static Fourier spectrometer there are no such ways. ...

NAME ND %TRANS DIMENSIONS(mm) TRACE DATA ------------------------------------------------------------------------- #1 0.02 95.5 50x50x2 curve trace data #2 0.08 82.9 50x50x2 curve trace data #3 0.18 65.8 50x50x2 curve trace data #4 0.31 48.5 50x50x2 curve trace data #5 0.62 24.0 50x50x2 curve trace data #6 0.69 20.4 50x50x2 curve What to do with the trace data. APO Filters Homepage ...

... A History of the Johnson Space Center . ... The full text of this book is provided online in PDF format and requires the free Adobe Acrobat Reader . ... Chapter 1 . ... The Commitment to Space (112 Kb) . ... The NASA Family (183 Kb) . ... The Flight of Apollo (373 Kb) . ... After Apollo, What Next?" ... Skylab to Shuttle (242 Kb) . ... Lead Center (262 Kb) . ... Space Business and JSC (214 Kb) . ... Suddenly Tomorrow Came is one book in a series of documents published by the NASA History Office. ...

... Space Flight . ... The Future . ... Just as the colour and style of a police officerтАЩs uniform may vary depending on their nationality or current circumstances, so the same can be said of the different spacesuits that men and women have worn to head into space. ... Slung-shot far above the 100km mark, Alan Shepard, the first American astronaut to enter space wore the Mercury Program spacesuit in May 1961. ... So finally to return to our opening question, spacesuits, fashion or function? ...

... Bad Astronomy . ... Mad Science . ... Please explain what the fourth dimension is and how it can be visualized. ... I never found any really good books describing it, although there is one fun one called "The Fourth Dimension Simply Explained". ... The fourth dimension would be if you could draw a line perpendicular to all three lines. ... If you could move in the fourth dimension, you could go straight out from the center of the sphere, receding forever, but never actually touch the surface. ...

... Tonight's Sky . ... Observing . ... Sky this Month . ... Bob Berman . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Observing Podcasts . ... Astronomy for Kids . ... Sky Events . ... Dave's Universe . ... Bob Berman's Strange Universe . Bob Berman's strange universe: Other dimensions . ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

Глава 3. ... Глубинная дифференциация вещества . В предыдущей главе мы выяснили, что все небесные тела Солнечной системы не являются неизменными на протяжении миллиардов лет, как полагают многие астрономы и небесные механики. ... Итак, первым рабочим веществом в планетной геологической эволюции, по нашему предположению, является углекислота, которая вследствие этого играет в развитии небесных тел великую роль в процессе глубинной дифференциации вещества. ... Происхождение материков и океанов . ...

... Telescopes . ... Superb optical performance coupled with time proven computerized pointing and tracking has made the LX200 ACF series a best-seller in the high-performance telescope class. ... LX70 Series . ... Meade's revolutionary LS LightSwitchтДв series of telescopes use advanced technologies to do what no other consumer telescopes have done before: take all the hassle out of using a telescope. ... LightBridgeтДв dobs give you high quality Meade optics, premium components, and ultra portability....

... 1 - 5 m HgCdTe Detector Material . Hybridization of 2048 x 2048 Arrays . ... Options for Extension to Visible Wavelengths . ... MBE HgCdTe Capability at Rockwell Science Center . ... Over the last two decades, dramatic improvements in the performance of 1 - 5 m infrared detector materials combined with the leap from single detectors to million pixel arrays have led to a billion-fold improvement in our ability to observe astronomical sources at these wavelengths. ...

... ASRAS HOME . ... For our educational outreach event, we hosted a Boy Scout troop in Ionia (Pix_1), for a sleep over this last spring and were able to make our Portable Radio Telescope (PBT - itty bitty radio telescope ) operational. ... The Solar Radio Telescope project is coming together nicely. ... You may have seen or heard of articles about the ongoing Solar RT project which is a Solar RF Spectrograph to study sunspots, presently being built for the ASRAS astronomy club (site in Ionia, NY). ...