These scrolls are of great significance in the study of Biblical texts because many of them contain the earliest known version of books of the Hebrew bible.
The main mechanism that brings deep water to the surface is upwelling, which is more common in regions closer to the equator. The counters work by detecting flashes of light caused by the beta particles emitted by 14 C as they interact with a fluorescing agent added to the benzene. In addition, anticoincidence detectors are used; these record events outside the counter, and any event recorded simultaneously both inside and outside the counter is regarded as an extraneous event and ignored. The equation governing the decay of a radioactive isotope is: This can be done with a thermal diffusion column. For accelerator mass spectrometry , solid graphite targets are the most common, although gaseous CO 2 can also be used.