"Cosmic Rays" is an expression all of us read in newspapers and magazine, particularly when there is a news about space-exploration. However, few people know what these rays are. Actually they are a bunch of particles that shower the earth from all around, and all electronic equipment in space needs to be protected from...
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Today everyone knows that electrons and protons are constituents of atom, but what exactly is an electron. How exactly did they discover it?
There is a very interesting history to it, which in turn tells us something exciting about how scientists use subtle clues...
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The emission of electrons from metals heated above 1000 degree centigrade is called thermionic emission. The name is made of thermo (heat) and ion (charged particle). However, the way thermionic emission was discovered and the way electrons were identified is one of the greatest...
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E=MC² is an expression widely known but little understood by most who quote this expression. Interestingly, this is an algebraic expression that opened the world to things as good...
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A supersolid is a spatially ordered material with superfluid properties. Superfluidity is a special quantum state of matter in which a substance flows with zero viscosity.
Background: Liquid helium-4...
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Strange matter is a particular form of quark matter, usually thought of as a ‘liquid’ of up, down, and strange quarks. It is to be contrasted with nuclear matter,...
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From time to time every coin enthusiast needs to clean silver coins. Silver coins that are several centuries or millennia old and that were stored in less than...
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Everyone has heard that electrons, protons, and neutrons are the ultimate constituents of matter, and that they cannot be divided further. Is that true? Not after the nineteen sixties!...
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The idea of time-travel, that people from the present go to the past and future, has been used extensively in fiction. But what is the fact about this...
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Physics and astronomy deal mostly with things that can be seen, or that can be "felt" with the help of special probes, however black hoes are entities that...
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Other discoveries and inventions: While Archimedes did not invent the lever, he wrote the earliest known rigorous explanation of the principle involved. According to Pappus of Alexandria, his work...
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Discoveries and inventions
The Golden Crown: The most widely known anecdote about Archimedes tells of how he invented a method for determining the volume of an object with an...
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Archimedes of Syracuse(c. 287 BC – c. 212 BC) was a Greek mathematician, physicist, engineer, inventor, and astronomer. Although few details of his life are known, he is...
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Antoine Henri Becquerel (15 December 1852 – 25 August 1908) was a French physicist, Nobel laureate, and one of the discoverers of radioactivity. He won the 1903 Nobel...
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Padma Vibhushan Subrahmanyan Chandrasekhar, FRS (October 19, 1910 – August 21, 1995) was an Indian born American astrophysicist. He was a Nobel laureate...
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The history of quantum mechanics as this interlaces with history of quantum chemistry began essentially with the 1838 discovery of cathode rays by Michael Faraday, during the 1859-1860 winter...
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My present-day readers live in a world so dominated by numbers and number-crunching that the question might look childish or even stupid to most. But wait! Tell me what...
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Physics is a science that can be applied to anything. It can explain how sound is made and how it can be manipulated. This paper will explain how musical...
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Researchers at the National Renewable Energy Laboratory (NREL) in Golden, Colo have developed a way for low-cost solar cells to more efficiently convert sunlight into electricity.The research, which increases...
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Using energy wisely will help fill your pocketbook, protect the environment, and perhaps improve national security — this according to a new report on energy efficiency issued by the...
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Lance Armstrong, the cyclist who won the Tours de France seven times, often came in first because he spent so much time in second. That is, he would regularly...
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Free Courses In Physics | Physics: An Introduction History of Physics: Ancient times
1895 to present
In 1895, Wilhelm Röntgen discovered X-rays, which turned out...
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Free Courses In Physics | Physics: An Introduction History of Physics: Ancient times
The Scientific Revolution
The Scientific Revolution is held by most historians (e.g.,...
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Free Courses In Physics | Physics: An Introduction History of Physics: Ancient times
Since antiquity, people have tried to understand the behavior of matter:...
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Free Courses In Physics | Physics: An Introduction Philosophical implications
Physics in many ways stemmed from ancient Greek philosophy. From Thales’ first attempt to...
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Free Courses In Physics | Physics: An Introduction Physics is quantitative
Physics is more quantitative than most other sciences. That is, many of the...
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