the alpha particle. Ernest Rutherford tested the structure of an atom by bombarding a thin sheet of gold foil with alpha particles. Most of the alpha particles passed though the atom but some reflected or even bounced of the gold foil. Rutherford concluded that there was a positive group of particles in the centre of the atom he revised Dalton’s original model and said that atoms were made up of a positive nucleus of protons and that the electrons orbited this centre. He was unable to explain why the electrons orbited the nucleus and did not spiral inward as they lost
There are actually now seven elements in the noble gases. Because they have the newest element which is called ununoctium. These elements were considered to be inert gases until the 1960's, because their oxidation number of zero prevents the gases from forming compounds readily. All noble gases have the maximum number of electrons possible in their outer shell making them
turn a wormhole into a time machine because it would take a strenuous effort and it is tough enough to pull it off. With the help of Einstein’s theory of general relativity they predicted that wormholes exist but none has ever been discovered. Just like the other theories, the Wormhole Theory also has problems , first problem of this theory is the size, prehistoric wormholes, according to scientists are said to be in microscopic size. However, as the universe expands, some of the wormholes might have been stretched into a larger size. Another problem is the stability of the wormholes.
Ernest’s contributions include: the invention of the early detector of radios waves, discovered the principle of half-life and that atoms were indestructible, etc. In an article called “Ernest 10 Major Contributions to Science” by Anirudh it states that “Rutherford discovered that every atom contains a nucleus where its positive charge, and most of its mass, is concentrated. His model of the atom thus contained the new feature of a relatively high central charge concentrated in a small volume of the atom and responsible for most of its mass.” With the help of the gold foil excitements he was able to figure out that an atom had a nucleus with a mass and a positive charge. Anirudh’s article also states that, “In 1917, Ernest Rutherford became the first person to deliberately transform one element into another.” He was able to to create the first nuclear reaction by converting nitrogen atoms into oxygen atoms with the help of alpha radiation. This helped prove his theory of the proton’s existence because when the alpha radiation occurred it turned the old element into a new element by removing two protons.
Einstein left behind the biggest legacy ever not only did he change scientists thoughts on physics forever but he answered many questions scientists had based around physics and energy. Einsteins legacy also includes him indirectly helping Robert Oppenheimer create the atomic bomb with his special theory of relativity that helped because in a way it says a large amount of energy can be released from a small amount of
Instead, Einstein proved that the Earth was rotating around the Sun in a straight line, but that the curve had been distorsioned because of the mass of the Sun, but in this case, the Earth moved freely. Black wholes used to be a mystery to the human, since they did not know at all what were they or what happened until Albert Einstein came into play. Humans thought than in black holes, nothing escaped, not even light which is true. Einstein 's theory said that the closer you are to the mass of gravity, the slower time passes, which explains once again another part of his theory that is: gravity can cause time to dilatate. Thanks to this, we know now why people do not age in black holes and how they work.
Bohr’s atomic model was one of the best created and devised scientific models of the atom in his lifetime considering it brought a large amount of new knowledge to the scientific community. For the previous reasons that are stated above they show why his model of the atom and how everything works together couldn’t necessarily be the correct model because it didn’t follow the previous rules that were discovered and tested on the atom that were found to be
These theories are the Big Bang theory and the Steady State theory, but the big Bang theory is generally held to be correct. The Big Bang theory is supported by the presence of Cosmic Background Radiation and the fact that the universe is expanding at an increasingly rapid rate. The Steady State theory has been abandoned by cosmologists, physicists, and astronomers because of the lack of evidence supporting it and the mass of evidence contradicting it. The theories that have been formulated in order to explain the end of the universe include the Big Crunch and the Big Yawn. The Big Crunch states that the universe will continue to expand to a point until the acceleration generated by the Big Bang is overwhelmed by the force of gravity, which will result in the universe being pulled into a central point and condensing into a singularity similar to the singularity at the start of the Big Bang.
In nuclear fusion, energy is released when atoms are combined or fused together to form a larger atom. The sun produces energy like this. But in nuclear fission, atoms are split into smaller atoms, releasing energy. Actually, nuclear power plants can only use nuclear fission to produce electricity. Nuclear generation is the only source of electricity that can produce large amounts of power known as base load power—reliably without emitting greenhouse gases.
It’s not a very profound thought but it's true, and since our best theory of gravity is Einstein's theory of general relativity, The most obvious thing to do is just apply that theory to the subatomic realm. As an illustrative example, let's imagine an electron orbiting a nucleus. If you do that you find that Einstein’s theory predicts that the electron would lose energy by the emission of gravity waves and then spiral down into the proton. A similar prediction using classical electromagnetism led to the invention of quantum mechanics. This same chain of reasoning suggests that gravity must also have some kind of quantum nature (Lincoln).