News tagged with gamma radiation

Radiation boost for artificial joints

A blast of gamma radiation could toughen up plastic prosthetic joints to make them strong enough to last for years, according to researchers in China writing in the current issue of the International Journal of Biomedical ...

dateSep 22, 2011 in Biochemistry
shares0 comments 0

Blazars

(PhysOrg.com) -- A blazar is a galaxy which, like a quasar, has an intensely bright central nucleus containing a supermassive black hole. In a blazar, however, the emitted light sometimes includes extremely high energy gamma ...

dateSep 06, 2011 in Astronomy
shares0 comments 9

Explained: rad, rem, sieverts, becquerels

Sometimes it must seem as though reports on releases of radioactive materials from Japan’s Fukushima Daiichi nuclear powerplant in the wake of the devastating earthquake and tsunami are going out of their way to confuse ...

dateMar 28, 2011 in Other
shares0 comments 1

Magnetic fields on O-Class stars

The primary method by which astronomers can measure magnetic field strength on stars is the Zeeman effect. This effect is the splitting of spectral lines into two due to the magnetic field's effect on the quantum structure ...

dateDec 20, 2010 in Astronomy
shares0 comments 0

Fermi maps an active galaxy's 'smokestack plumes'

If our eyes could see radio waves, the nearby galaxy Centaurus A (Cen A) would be one of the biggest and brightest objects in the sky, nearly 20 times the apparent size of a full moon. What we can't see when looking at the ...

dateApr 01, 2010 in Astronomy
shares0 comments 1