The Dalian Coherent
Light Source, whose completion was announced today in Beijing, has a twist that makes it unique: It is the only large laser light source in the world dedicated to the particular range of short - wavelength light called vacuum ultraviolet, which makes it «a new tool for the detection and analysis of molecules undergoing chemical reactions,» says Alec Wodtke, a physical chemist at the Max Planck Institute for Biophysical Chemistry and the University of Göttingen in Germ
Light Source, whose completion was announced today in Beijing, has a twist that makes it unique: It is the only large laser
light source in the world dedicated to the particular range of short - wavelength light called vacuum ultraviolet, which makes it «a new tool for the detection and analysis of molecules undergoing chemical reactions,» says Alec Wodtke, a physical chemist at the Max Planck Institute for Biophysical Chemistry and the University of Göttingen in Germ
light source in the world dedicated to the
particular range of short -
wavelength light called vacuum ultraviolet, which makes it «a new tool for the detection and analysis of molecules undergoing chemical reactions,» says Alec Wodtke, a physical chemist at the Max Planck Institute for Biophysical Chemistry and the University of Göttingen in Germ
light called vacuum ultraviolet, which makes it «a new tool for the detection and analysis of molecules undergoing chemical reactions,» says Alec Wodtke, a physical chemist
at the Max Planck Institute for Biophysical Chemistry and the University of Göttingen in Germany..
A beam tightly focused by a telescope could greatly outshine a planet's host star
at a
particular wavelength, Townes realized, popping out as clearly as a red laser pointer aimed
at someone from across a stadium flooded with white
lights.
Since different elements and compounds absorb
light at characteristic
wavelengths, astronomers can determine what chemicals make up a planet's atmosphere by measuring the relative amounts of
light that come in
at particular wavelengths.
The possibility of such cells has been debated
at least since the 1950s, when researchers found single neurons in the visual cortex of cats and other animals that respond to simple stimuli, such as lines oriented
at a certain angle or moving in a specific direction, or
light of a
particular wavelength.
That first quasar and others identified later puzzled astronomers because, when their
light was analyzed to find the characteristic «signature» of emission
at specific
wavelengths shown by
particular atoms, the pattern was
at first indecipherable.