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Nuclear Fission:
Splitting the Atom You know that atoms are made up of a nucleus and electrons moving around the nucleus, and the nucleus is made up of protons and neutrons. The principal actor in the fission drama is the uranium atom. The nucleus of the Uranium 238 atom has 92 protons and 146 neutrons. About one atom in 140 atoms of uranium has 143 neutrons in its nucleus. lt is called Uranium 235. It is the Uranium 235 that is mostly used to provide fuel for nuclear furneces. Before the Second World War, two German scientists discovered that if neutrons were shot at the nuclei of Uranium 235, the nuclei split into two and produced other neutrons to repeat the process. This is called nuclear fission.
Explain the Posterior Pituitary The posterior pituitary gland or neurohypophysis is located immediately behind the anterior pituitary gland, as you may have seen in Figure.
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Q. What are the preliminary steps involved during preparation of raw materials? Preliminary steps involved during preparation of raw materials include cleaning, peeling, cuttin
Define the Sympathetic Nervous System The sympathetic component of the autonomic nervous system is concerned with in- creasing the level of arousal and energy expenditure - pri
Explain Functions of Gastric Juice - Enzyme action Enzyme action: Pepsin begins the chemical digestion of proteins. It converts proteins to peptones. The enzyme rennin present
Define Unicellular Organisms and Multicellular Organisms You may be aware that some organisms are made up of only one cell, while others have more than one cell. Well, the sing
Physical universe: The universe is vast. The Earth we live on appears to be just a speck of dust circling a small star in a remote corner of an obscure galaxy. If we are a s
3 human adaptations to help differential survivability, and three re differential fecundity
FIRE HAZARDS IN THE LABORATORY : The average science laboratory is a particularly hazardous area when it comes to fire. Flammable liquids, compressed and liquefied gases, hazard
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