Dimensional analysis yields an understanding of the power density of the Sun. All of the power generated within the Sun is radiated from the photosphere, whose area scales as the radius of the Sun, which scales as 4*Pi*R^2 while the volume scales as 4/3*Pi*R^3. Hence, the power density of the Sun per unit volume or per unit mass, scales as 3/R. From a human perspective, since the radius of the...

"Solar activity is expected to be very low." Joint USAF/NOAA Report of Solar and Geophysical Activity 25 Feb 2009 STATUS REPORT Date Released: Wednesday, February 25, 2009 Source: Space Environment Center (NOAA) Product: Report of Solar-Geophysical Activity Issued: 2009 Feb 25 2200 UTC

http://www.youtube.com/watch?v=OZk9dv5TkKw

Latest issue :Issued: 2009 Feb 24 1216 UTC :Product: documentation at http://www.sidc.be/products/quieta #--------------------------------------------------------------------# # From the SIDC (RWC-Belgium): "ALL QUIET" ALERT # #--------------------------------------------------------------------# START OF ALL QUIET ALERT ....................... The SIDC - RWC Belgium expects...

ITER see: http://en.wikipedia.org/wiki/ITER As a take home exercise I suggest that motivated students of stellar/nuclear power density extend the dimensional analysis you learned here and calculate the power density of ITER. Hints: 1. "the fusion of about 0.5 g of deuterium/tritium mixture in its approximately 840 m^3 reactor chamber."

Oh goodie, a set back for 'carbon science'. Nasa's CO2 satellite crashes into Antarctic ocean Adam Vaughan guardian.co.uk, Tuesday 24 February 2009 10.57 GMT A sunset silhouette of the Taurus XL rocket with Nasa's OCO satellite aboard sits poised for launch at Vandenberg Air Force Base in California. Photograph: Analex Randy Beaudoin/Nasa Nasa's pioneering satellite, designed to map carbon...

Can Obama respond to giant hole in Earth's magnetosphere by 2012? February 24, 2:11 PM by Michael Salla, Ph.D., Honolulu Exopolitics Examiner NASA scientists on December 16, 2008 announced that "THEMIS spacecraft have discovered a breach in Earth's magnetic field ten times larger than anything previously thought to exist." NASA's THEMIS mission comprises 5 probes launched in February 2007 to...

I bought a Bendix 566 Psychrometer at a flea market about a month back, and I've been modernizing it with a brushless fan and an LED back light. I'm a retired EE so I guess I became kind of a nut over this thing. I find the wet bulb thermometer reading, when the wick is dry, is always about 0.5 deg F higher than the dry bulb reading after it has been running for a while, whereas when I just...

wrote: On Feb 20, 10:36 am, Malcolm Turnball wrote: wrote: bnooz wrote: Esti Ahronovitz 18 Feb 2009 The blackboard in Prof. Nir Shaviv's office in the Department of Physics at Hebrew University is covered with equations and graphs. Golly, must be one of them smart fellers then.

Dimensional analysis yields an understanding of the power density of the Sun. All of the power generated within the Sun is radiated from the photosphere, whose area scales as the radius of the Sun, which scales as 4*Pi*R^2 while the volume scales as 4/3*Pi*R^3. Hence, the power density of the Sun per unit volume or per unit mass, scales as 3/R. From a human perspective, since the radius of...

Latest issue :Issued: 2009 Feb 24 1216 UTC :Product: documentation at http://www.sidc.be/products/quieta #--------------------------------------------------------------------# # From the SIDC (RWC-Belgium): "ALL QUIET" ALERT # #--------------------------------------------------------------------# START OF ALL QUIET ALERT ....................... The SIDC - RWC Belgium expects...

Joint USAF/NOAA Report of Solar and Geophysical Activity 24 Feb 2009 STATUS REPORT Date Released: Tuesday, February 24, 2009 Source: Space Environment Center (NOAA) Product: Report of Solar-Geophysical Activity Issued: 2009 Feb 24 2200 UTC Prepared jointly by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center and the U.S. Air Force.

Accuweather http://global-warming.accuweather.com/2009/02/water_vapor_feedback_1.html "Professor Andrew Dessler, the author of this study, which is published in the journal Science, concludes that evidence of this strong, positive water vapor feedback is overwhelming." David Christainsen - Meteorologist

Joint USAF/NOAA Report of Solar and Geophysical Activity 23 Feb 2009 STATUS REPORT Date Released: Monday, February 24, 2009 Source: Space Environment Center (NOAA) Product: Report of Solar-Geophysical Activity Issued: 2009 Feb 23 2200 UTC Prepared jointly by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center and the U.S. Air Force.

"February 24, 2009" http://www.spaceweather.com/ "Daily Sun: 24 Feb 09 Sunspot number: 0" "Far side of the Sun: This holographic image reveals no sunspots on the far side of the sun." "Planetary K-index Now: Kp= 1 quiet" The face of the Sun is without blemish: http://mdisas.nascom.nasa.gov/gif_health/latest_igram_fd.gif

wrote in message ... not true. cold slows down metabolism, putting less wear and tear on the body. things slow down you live longer. a side benefit is that it regrows hair on bald men. Ernie So no bald men in Canada then.

http://en.wikipedia.org/wiki/Aphelion July 4, 2009, Earth Aphelion approaches Earth Perihelion is the date on which the earth is closest to the sun. That date changes from year to year. The last Earth Perihelion was January 4, 2009. On that date the radiant energy that the earth received from the Sun was greater than on any other day of the year. Too bad it is past Earth Aphelion is the date...

http://www.crichton-official.com/speech-environmentalismaseligion.html

Now that meathead is in charge, this question is more important than ever: Should the United States Ratify the Kyoto Protocol? By Larry West, About.com The Kyoto Protocol is an amendment to the United Nations Framework Convention on Climate Change (UNFCCC), an international treaty intended to bring countries together to reduce global warming and to cope with the effects of temperature...

http://en.wikipedia.org/wiki/Aphelion July 4, 2009, Earth Aphelion approaches Earth Perihelion is the date on which the earth is closest to the sun. That date changes from year to year. The last Earth Perihelion was January 4, 2009. On that date the radiant energy that the earth received from the Sun was greater than on any other day of the year. Too bad it is past Earth Aphelion is the date...