Posted by Sunny Kalara | 0 Comments
Obey the laws of physics – everything else you do is optional
Obey the laws of physics – everything else you do is optional – especially when you are driving.
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Posted by Sunny Kalara | 0 Comments
Gamma Ray Sky Map
A view of the entire sky captured by the recently launched Fermi Gamma-ray Space Telescope shows bright radiation coming mostly from the Milky Way’s galactic plane.
Using the craft’s first 95 hours of active observation, mission scientists produced a map of gamma ray sources as seen from Earth that shows the same level of detail as previous maps that took more than a year to create.
In addition to the full-sky map, the first data from Fermi’s burst monitor include records of “a gamma ray burst about once a day … the highest rate of detection of any satellite,”
The scale of Gamma Ray bursts:
The intense flashes of gamma rays can release within seconds the same amount of energy that the sun will put out over its entire ten-billion-year lifetime.
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Posted by Sunny Kalara | 3 Comments
Tuesday Physics Tattoos: Electronic Circuit tattoos
Many of these circuit tattoos are of Moog filter – a circuit used in the synthesizer.
There is so much physics in the Moog synthesizer. It allowed a visual way to manipulating the sound waves. In addition it also allowed the user to control the amplitude modulation and frequency modulation. Talk Like a Physicist
Posted by Sunny Kalara | 1 Comment
SCIENCE : If you ain’t pissin’ people off, you ain’t doing’ it right.
Click for a better view.
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Posted by Sunny Kalara | 0 Comments
This is the age of precision cosmology
This is the age of so-called precision cosmology
In an interesting article in NY Times about the struggle to measure cosmic expansion , the quip that I found the most pithy was about how the precision cosmology has become so important.
I know, it is an old statement; in July 1999, Wendy Freedoman announced that “after all these years, we are finally entering an era of precision cosmology”; and one could argue that the one of the first proof of relativity with perihelion of mercury can also be called “precision cosmology”; but every time I hear the statement, it sounds truer.
You know that the cosmology is gotten very precise, when a top forty band sings a love song, and in passing mentions that the universe is 12 billion yrs old; and she is challenged on it and asked to correct her lyrics to accurately reflect that the universe is really 13.7 billion yrs old!
There is so much physics yet to be explored and extracted from the precise measurements of the cosmic microwave background. The precision power decay and and the spectra measurements of various supernova bursts will tell us so much about the internal structure of these objects. Precision cosmology with weak gravitational lensing has helped us figure out the distribution of dark matter.
Like in any other precision experiments, there are systematic errors that one needs to be mindful of, but in the next decade we will learn so much from the precisely measured cosmic dance moves.
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