Definition of spectrometer. 1  1 : an instrument used for measuring wavelengths of light spectra. 2  2 : any of various analytical instruments in which an emission (as of particles or radiation) is dispersed according to some property (as mass or energy) of the emission and the amount of dispersion is measured nuclear magnetic resonance spectrometer.
1 bar is equal to 1000 millibars. Just like how there are 1000 millilitres in a litre, and 1000 milliseconds in a second. 1 millibar = 0.001 bars.
One primary difference between granola bars and energy bars is their protein levels. Regular granola bars contain approximately 1 g of protein per bar. Energy bars, on the other hand, may contain 10 to 20 g of protein per serving. Common sources of energy bar protein include gelatin, collagen, milk, soy or eggs. Some energy bars also contain nuts or seeds that boost their protein content.