An interesting thing about the final speed of an object descending (with no friction) from some given height h , along a sloping surface: one can change the slope, one can even change the shape of the surface--yet the final speed v with which it reaches the bottom will always be the same. ... Heat . ... Electric . ... Like currencies, different kinds of energy have a certain exchange rate: in the exchange between kinetic or potential energy and heat, for instance, one calorie equals about 4.18 joules. ...

... 18c. Work . An interesting thing about the final speed of an object descending (with no friction) from some given height h , along a sloping surface: one can change the slope, one can even change the shape of the surface--yet the final speed v with which it reaches the bottom will always be the same. ... Like currencies, different kinds of energy have a certain exchange rate: in the exchange between kinetic or potential energy and heat, for instance, one calorie equals about 4.18 joules. ...

... The visibility datasets possibly contain correlations for different polarizations and Stokes parameters. There are two basic ways that polarization characteristics can be measured: firstly, two orthogonal feeds can be present on the antennas, and the four different polarization correlations from a baseline can be taken and recorded. ... There are two ways the user can determine which polarizations he or she wants to process, either with the select parameter, or with the stokes parameter. ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. May 26, 1999 . GRB 990510: Another Unusual Gamma Ray Burst . ... The type of powerful explosion that caused this gamma-ray burst is not only still unknown, but found to be fading in an unusual way . Tomorrow's picture: The Expanding Universe . ... About APOD > . ...

The computed band passes. ... The interim correlator input is filtered by 8 analog filters (50 Mhz wide at the 260 Mhz IF... one for each sub correlator). ... For bandwidths of 25 Mhz and below the real data stream is digitally down converted to complex samples I, Q streams. ... The Top figure is the halfband filter bandpass computed from the filter coefficients. ... The computed filter has aliased power, extra IQ filtering, and two applications of the filter on the resulting real bandpass. ...

. Here is an applet. It has two parameters -- speed and message. Its alignment is ABSMIDDLE. Here is an applet. It has two parameters -- speed and message. Its alignment is ABSMIDDLE. Here is an another instance of the same applet, but it has a different speed and a different message. Its alignment is RIGHT. Here is an another instance of the same applet, but it has a different speed and a different message. Its alignment is RIGHT. The Java source for the applet.

. To send a file to a different printer use the command: lpr -P name_of_printer filename . To find out the names of the printers that you can use enter the command: lpstat -p . There may be a local command that gives you this information. Example . Changing to use another printer by default .

... One Jansky (Jy) is defined as 10 -26 Wm -2 Hz -1 , so it is a unit of measurement of the spectral flux density, F . ... 3x10 -12 . ... erg sec -1 cm -2 ?m -1 . ... where m is the magnitude and F o the zero-point flux for the given photometric band. ... Surface brightnesses are generally measured in Janskys arcsec -2 , MJy steradian -1 or magnitudes arcsec -2 . If you have a surface brightness S in MJy steradian -1 , then you can use: S [Jy arcsec -2 ] = S [MJy ster -1 ] x 0.084616. ...

... Variations in water level along coastlines can be used to drive turbines technology is the same as low-head hydro power . ... Intermittent tidal flow is major problem. Tidal facility produces about 1/3 the electrical energy of a hydro facility of the same peak capacity . Two tidal plants in the world: . ... Bottom Line: There aren't many favorable sites in the world for tidal power and the estimated capacity is 50 times smaller than the world's hydroelectric power capacity. ...

Comedi Documentation . ... Right to the source: #include <stdio.h> /* for printf() */ #include <comedilib.h> int subdev = 0; /* change this to your input subdevice */ int chan = 0; /* change this to your channel */ int range = 0; /* more on this later */ int aref = AREF_GROUND; /* more on this later */ int main(int argc,char *argv[]) { comedi_t *it; lsampl_t data; it=comedi_open("/dev/comedi0"); comedi_data_read(it,subdev,chan,range,aref,&data); printf("%d\n",data); return 0; } . ...

... Nuclear processes within stars first convert hydrogen to helium, then helium to carbon, and eventually to heavier elements. ... In one model, a low-mass star which has finished its evolution as a RED GIANT contracts to become a WHITE DWARF , passing through a phase when it illuminates a PLANETARY NEBULA . ... Convection will thoroughly mix the outer layers of this star to give the mixture of helium and carbon seen in RCBs. ... Figure 3: Internal structure of an RCB star . ...

... Another Comet LINEAR Breaks Up . ... 21.05.2001 . ... VLT YEPUN, ESO Explanation: Last year, a different comet LINEAR (C/1999 S4) broke up. This year, a comet first imaged by the Lincoln Near Asteroid Research (LINEAR) telescope in New Mexico on 2001 January 3, is also breaking up. This new Comet LINEAR (C/2001 A2) unexpectedly brightened to the edge of naked-eye visiblilty a few weeks ago when its nucleus broke in two. ... May 2001 . ... Publications with keywords: comet linear - C/2001 A2 . ...

The efficiency of interaction of radiation with a particle and hence its optical properties depend on the particle chemical composition, size, shape, structure, etc. ... Particle size expressed in units of the wavelength of incident radiation, together with chemical composition, most strongly affects the optical properties of a scatterer. ... There are many methods to solve the light-scattering problem for a homogeneous spheroid (our survey of the light-scattering methods see here ). ...

Class 1 Introduction, Background History of Modern Astronomy The Night Sky, Eclipses and the Seasons Kepler's Laws Newtonian Gravity General Relativity Matter and Light Telescopes Class 2 Solar System Characteristics Formation Exosolar Planets Class 3 Stars The S un Stellar Evolution of Low and High Mass Stars Deaths of Stars Exotic Stars Class 4 Galaxies Galaxy Classification Formation of Galaxies Galactic ... Low mass stars live and die differently than high mass stars. ...

Weaving together Astronomy+Statistics+Computer Science+Engineering+Intrumentation, far beyond the growing borders . ... Posts tagged ?Frequentist? ... Continue reading ?[ ... Tags: Bayesian , Frequentist , Ping Zhao , question for statisticians , weighted mean . Category: Bad AstroStat , Fitting , Frequentist , Stat , Uncertainty | 18 Comments . ... Category: arXiv , Quotes | Comment . ... Category: arXiv | ... Category: Bayesian , Fitting , Frequentist , Jargon , Stat , Uncertainty | ...

Astronotes Armagh Planetarium's Stellar Blog! ... Our Galaxy . ... Space Flight . ... Posted on April 21, 2011 | No Comments An image from the European Southern Observatory, reveals two galaxies, NGC 3169 and NGC 3166, meeting in intergalactic space. ... Continue Reading.. ... 1 Comment NGC 2841 is a rather beautiful flocculent spiral galaxy. The Hubble Space Telescope recently imaged NGC 2841 as part of an investigation into how new stars are created. ... Posted on October 28, 2010 | ...

home education > activities . ... Astronomy . ... This calculational activity by Evan Manning helps familiarize students with the Gregorian calendar, and then asks them to come up with a calendar system for another planet where the year is also not an integer multiple of days. [m,h] . ... Offers a spreadsheet to make a scale model of the solar system and beyond. ... Very basic activity, building a scale model of the Earth-Moon system; also teaches the simple math of ratios and scaling. [e, m] . ...

... 172, Astronomical Data Analysis Software and Systems VIII, eds. D. M. Mehringer, R. L. Plante, & D. A. Roberts (San Francisco: ASP), 407 . ... To facilitate data retrieval, we have created U-DARES, a user-friendly program that lets one look directly at the data in the USNO-A catalog, either as a graphical sky map, a plot, or a simple text table. ... To help PC users solve the problem of data retrieval, we have created the USNO-A Catalog Data Retrieval Software, or U-DARES. ...

grdreformat - Converting between different grdfile formats. grdreformat ingrdfile [= id [/ scale / offset [/ nanvalue ]]] outgrdfile [= id [/ scale / offset [/ nanvalue ]]] [ -R west / east / south / north [ r ] ] [ -V ] grdreformat reads a grdfile in one format and writes it out using another format. As an option the user may select a subset of the data to be written and to specify scaling, translation, and nan-value. ingrdfile The grdfile to be read. ...

. Next: Output Up: Calling Parameters Previous: Calling Parameters Contents . rawX, rawY . - arrays with CCD pixel co-ordinates in the PIXCOORD reference frame . E . - arrays with uncorrected energies referring to the raw measured signal in ADU's. Note from above I suspect we need to convert all E1,E2,E3,E4 values (TBC) because the CTI correction may be proportionally different in the smaller peripheral charge cloud packets than in a combined event. Michael Smith 2011-09-20