Charged Coupled Device CCD Cameras

CCD cameras are basically a large array of photodiodes containing many spots—pixels—which convert light to an electric signal. The higher is the amount of spots, the higher is the resolution of the camera. CCD cameras are, in general, not as sensitive to light as PMTs, and this may affect the sensitivity of the instrument. Instruments equipped with a CCD camera will measure all samples simultaneously for each wavelength and must be used together with filters. The excitation and detection wavelengths of some instruments are set for certain fluorescence detection chemistries, which reduce the flexibility of the instrument and may lead to higher running costs.

Getting Started With Dumbbells

Getting Started With Dumbbells

The use of dumbbells gives you a much more comprehensive strengthening effect because the workout engages your stabilizer muscles, in addition to the muscle you may be pin-pointing. Without all of the belts and artificial stabilizers of a machine, you also engage your core muscles, which are your body's natural stabilizers.

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