Physics is a diverse area of study and in order to make sense of it scientists have been forced to focus their attention on one or two smaller areas of the discipline. This allows them to become experts in that narrow field‚ without getting bogged down in the sheer volume of knowledge that exists regarding the natural world. Below is a list - by no comprehensive - of different disciplines of physics. The list will be updated with new additions and definitions as appropriate. Acoustics - the study
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In Newtonian physics‚ free fall is any motion of a body where its weight is the only force acting upon it. In the context of general relativity‚ where gravitation is reduced to a space-time curvature‚ a body in free fall has no force acting on it and it moves along a geodesic. The present article only concerns itself with free fall in the Newtonian domain. An object in the technical sense of free fall may not necessarily be falling down in the usual sense of the term. An object moving upwards
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The Other Side of Einstein Albert Einstein‚ arguably the greatest scientist and mathematician of all time‚ is mostly known for his prominent scientific discoveries and achievements. He is often perceived by the public as a scientist who lived his life in his laboratory studying‚ void of any social life. However‚ in the essay "My Friend‚ Albert Einstein" by Banesh Hoffmann‚ Einstein’s long time friend attempts to depict Einstein as a humble and compassionate man‚ contrary to the mythological figure
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1610‚ Galileo Galilei had publicly announced his support and belief of a Heliocentric Solar System‚ the Sun being the center of Earth. Throughout his life‚ Albert Einstein‚ famous for his general theory of relativity‚ had challenged all theories including Newton’s Laws of Motion. Dating back earlier‚ as early as 240 BC‚ a Greek mathematician named Eratosthenes had come with the theory of how the Earth was not flat. During Georges Lemaitre’s time‚ he had started the hypothesis of the Big
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Dark Energy VS Dark Matter Dark Matter Dark Matter is the name given to mass that emits no detectable radiation. ‘’Dark Matter accounts for the galaxies rotating about "local groups" in tighter orbits than we expect from our observations. Gravity is stronger than we can account for unless there is some matter we cannot see. We are much more certain what dark matter is not than we are of what it is” (Feild‚ Ann‚ 2013). Scientists think dark matter is made of particles called WIMPS‚ "weakly
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and the universe began to expand rapidly. The universe never sits still. It expands at a gradual rate. In the 1920s‚ Albert Einstein‚ an astrophysicist from Germany‚ had discovered evidence of the expansion of the universe through his Theory of Relativity‚ which was published in 1915. Following the creation of gravity‚ subatomic particles‚ such as protons and neutrons‚ were formed due to the force of the particles colliding with each other. It was actually around three minutes later that protons
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tutorial groups for individual discussions each week (“Questions of the Week”) -Projects: short presentation in your discussion group Welcome to Astronomy/Origins 2B03 “The Big Questions” Your instructor: Dr. Christine Wilson – astrophysics‚ relativity‚ cosmology - Keep an individual journal on the Avenue to learn site -Respond with your thoughts and questions (through the Avenue site) to the weekly topics Jeremy Webb (Head TA) Special guest lecturers & a team of excellent TAs! Your
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From millennium-skipping Victorians to phone booth-hopping teenagers‚ the termtime travel often summons our most fantastic visions of what it means to move through the fourth dimension. But of course you don’t need a time machine or a fancy wormhole to jaunt through the years. As you’ve probably noticed‚ we’re all constantly engaged in the act of time travel. At its most basic level‚ time is the rate of change in the universe -- and like it or not‚ we are constantly undergoing change. We age
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mathematical analysis in the eighteenth century. Determinism is deeply connected with our understanding of the physical sciences and their explanatory ambitions‚ on the one hand‚ and with our views about human free action on the other. In both of these general areas there is no agreement over whether determinism is true (or even whether it can be known true or false)‚ and what the import for human agency would be in either case. 1. Introduction 2. Conceptual Issues in Determinism 2.1 The World 2.2 The
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Alan Lightman’s "Einstein’s Dreams" "For those of us who believe in physics‚ this separation between past‚ present‚ and future is only an illusion‚ however tenacious." Albert Einstein For sure‚ one of the most important and discussed man of the 20th century is Albert Einstein - may be the most eminent German Jew. And many were the authors trying to describe the life and deeds of this prominent man. But one surely differs from the others in NOT trying to describe Einstein’s life but imagine
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