8/14/2023 0 Comments Reflection definition biology![]() Send us feedback about these examples.Some of the earliest accounts of light reflection originate from the ancient Greek mathematician Euclid, who conducted a series of experiments around 300 BC, and appears to have had a good understanding of how light is reflected. These examples are programmatically compiled from various online sources to illustrate current usage of the word 'hypothesis.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. 2023 Over the last few decades, an idea called the critical brain hypothesis has been helping neuroscientists understand how the human brain operates as an information-processing powerhouse. 2023 Fiddling with dopamine levels became the cornerstone of schizophrenia treatment, laying the foundation for the dopamine hypothesis of schizophrenia-the theory that a dysregulated dopamine system causes the condition’s symptoms. 2023 Virologists and infectious disease experts, meanwhile, continue to note that the limited available data so far supports the spillover hypothesis, albeit not conclusively. 2023 But that hypothesis has been missing a key piece of proof: genetic evidence from the Huanan Seafood Wholesale Market in Wuhan, China, showing that the virus had infected creatures for sale there. 2023 Is there any evidence for the lab leak hypothesis for the origin of SARS-CoV-2? - Tanya Lewis, Scientific American, 12 Apr. Jonathan Wosen, STAT, All that said, Carlson will test the hypothesis that Fox News as a brand trumps any single personality. Lauren Puckett-pope, ELLE, Key evidence for or against her hypothesis could come from an ongoing clinical trial, expected to conclude around the end of this year, that is testing the effectiveness of the antiviral valacyclovir in treating adults with mild Alzheimer’s who also test positive for HSV-1. Recent Examples on the Web More recent research argues against the porphyria hypothesis. ![]() While theories are never completely infallible, they form the basis of scientific reasoning because, as Miller said "to the best of our ability, we’ve tested them, and they’ve held up." It not only explains those facts, but predicts what you ought to find from other observations and experiments.” A theory is a system of explanations that ties together a whole bunch of facts. Miller, a cell biologist at Brown University, has said, a theory "doesn’t mean a hunch or a guess. The distinction has come to the forefront particularly on occasions when the content of science curricula in schools has been challenged-notably, when a school board in Georgia put stickers on textbooks stating that evolution was "a theory, not a fact, regarding the origin of living things." As Kenneth R. This mistake is one of projection: since we use theory in general to mean something lightly speculated, then it's implied that scientists must be talking about the same level of uncertainty when they use theory to refer to their well-tested and reasoned principles. (The word law applies to principles so firmly established that they are almost never questioned, such as the law of gravity.) The most common occurrence is when theory is interpreted-and sometimes even gleefully seized upon-to mean something having less truth value than other scientific principles. Since this casual use does away with the distinctions upheld by the scientific community, hypothesis and theory are prone to being wrongly interpreted even when they are encountered in scientific contexts-or at least, contexts that allude to scientific study without making the critical distinction that scientists employ when weighing hypotheses and theories. In non-scientific use, however, hypothesis and theory are often used interchangeably to mean simply an idea, speculation, or hunch, with theory being the more common choice. Because of the rigors of experimentation and control, it is understood to be more likely to be true than a hypothesis is. It is used in the names of a number of principles accepted in the scientific community, such as the Big Bang Theory. You ask a question, read up on what has been studied before, and then form a hypothesis.Ī hypothesis is usually tentative it's an assumption or suggestion made strictly for the objective of being tested.Ī theory, in contrast, is a principle that has been formed as an attempt to explain things that have already been substantiated by data. ![]() In the scientific method, the hypothesis is constructed before any applicable research has been done, apart from a basic background review. ![]() The Difference Between Hypothesis and TheoryĪ hypothesis is an assumption, an idea that is proposed for the sake of argument so that it can be tested to see if it might be true.
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