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Physics chemical elements through chemical bonds, they are ionic, covalent or metallic. These bonds, which give rise to alloys crystals and molecules (Figure 1), for example, have essentially an electromagnetic nature, or result from processes involving attraction or repulsion of electrical charges or ions (elements which lose or gain electrons). Figure 1a: Representation of the structure of a cubic crystal NaCl. Figure 1b: Representation of the caffeine molecule. SEARCH The most important result of the work of Rutherford was the discovery of the atomic nucleus. Search in texts of physics or chemistry, as the experiment was conducted and that the idea of Coulomb repulsion helped. Be aware of the technique of the bombing of the studied material because it was fundamental to the development of nuclear physics. Almost everything that happens in the electron cloud of the atom has been studied and, at first sight, one could think that everything was solved! However, little is known about the nucleus, and this became an issue of great interest to physicists. The Atomic Nucleus: Man playing with bricks of matter The core dimensions are so small that the sizes associated with it are written in terms of a unit of length called Fermi (F), whose equivalence with the meter is: 1F =10-15 Investigations about the atomic nucleus are very expensive - but very much! Who would fund a research project with the sole purpose of better understanding the phenomena surrounding the nucleus without a prospect of application? The answer came through one of the oldest forms of interaction between humans, the war. The three fundamental interactions
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Fizika kemijski elementi kroz kemijske veze, oni su ionski, kovalentna ili metalne. Ove obveznice, koje bi mogle dovesti do legura kristala i molekula (Slika 1), na primjer, ima doslovno elektromagnetsko prirodu, ili su proizvod procesa u kojima se privlačnost ili odbojnost od električnih naboja ili iona (elementi koji izgubi ili dobije elektrona). Slika 1a: Zastupljenost strukturi kubični kristal NaCl. Slika 1b: Prikazivanje kofeina molekule. TRAŽI Najvažniji rezultat rada Rutherford je otkriće atomske jezgre. Traži u tekstovima fizike ili kemije, kao što je pokus i da je ideja Coulombovom odbojnosti pomoglo. Budite svjesni tehnici bombardiranja promatranog materijala jer je od temeljne važnosti za razvoj nuklearne fizike. Gotovo sve što se događa u elektronskom oblaku atoma je studirao i, na prvi pogled, moglo bi se misliti da je sve riješeno! Međutim, malo se zna o jezgri, a to je postao problem od velikog interesa za fizičare. Atomske jezgre: Čovjek svira ciglom materije Jezgra dimenzije su toliko mali da su veličine povezane s njim napisao u smislu jedinici duljine zove Fermi (F), čija je istovjetnost sa metarje:. 1F =10-15 m Istraživanja o jezgri Atomski su vrlo skupi - ali jako puno! Tko će financirati projekt istraživanja s jedinim ciljem boljeg razumijevanja fenomena koji okružuju jezgru bez izgleda za primjenu? Odgovor je došao iz jedne od najstarijih oblika interakcije između ljudi, ratnih. Tri temeljne interakcije223