What is the origin of the letters used in star classification? Why didn't astronomers use ABCD? J. HaldimanChicago, Illinois ...

Supernovae are powerful stellar explosions marking the death of stars. Type I supernovae lack hydrogen; Type II supernovae show hydrogen. Type Ia supernovae originate from exploding white dwarfs; Type ...

An initial step of most NMR studies is identifying peaks in the obtained spectrum. Producing a peak list is especially crucial if the spectrum is automatically prepared. Peak picking is still ...

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