THOMPSON'S EXCHANGE MIXTURE SUPER RARE TOBACCO TIN.Early tax stamp of 1897 is 95% intact. One fourth pound size. Slip lid. Measures 3 in height X 3 1/4 in width.This tin is not in any tobacco tin book or list anywhere that we can find.HOMPSON'S EXCHANGE MIXTURE SUPER RARE TOBACCO TIN.Early tax stamp of 1897 is 95% intact. One fourth pound size. Slip lid. Measures 3 in height X 3 1/4 in width.
Nucleus, in biology, a specialized structure occurring in most cells (except bacteria and blue-green algae) and separated from the rest of the cell by a double layer, the nuclear membrane.
Definition. A subatomic particle is a unit of matter or energy that's the fundamental makeup of all matter. According in modern atomic theory, an atom has a nucleus, which is its center, or core. The nucleus contains subatomic particles: protons and neutrons. Protons are positively-charged particles. Neutrons are neutral particles. Surrounding the nucleus is a cloud of very small subatomic particles, called electrons. Electrons are negatively-charged particles.