Khaleel Ashraf, Author at esSENSE freethinkers' diary

Author: Khaleel Ashraf

Electricity and Electromagnetism – Part 2

Electricity and Electromagnetism – Part 2 The beginning of electricity’s modern era can be traced to a small Danish classroom in 1820. There, in front of a room full of physics students, Hans Christian Oersted (1777–1851) discovered that electricity can produce magnetic fields. Oersted was the son of a Danish pharmacist, and he had planned to follow his father’s profession, but he became captivated by electrical studies in 1800. He gained great popularity as a science lecturer and was given a professorship at the University of Copenhagen in 1806. In 1820, Oersted hooked up a coil of wire to...

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Electricity and Electromagnetism

Electricity and Electromagnetism Can we even imagine a world without electricity? But as unimaginable it may sound to us now, the story of electricity for practical use has been around for only few centuries. Most modern uses of electricity rely on electrons that move. Newton’s first law of motion demands that electrons can’t move unless a force is applied. A method for applying such a force was discovered in 1794, when the Italian physicist Alessandro Volta (1745–1827) invented the battery. Alessandro Giuseppe Antonio Anastasio Volta was born to an impoverished family in northern Italy. He showed a flair for...

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The First Law Thermodynamics, and the net energy of the Universe

The first law of thermodynamics states energy can’t be newly created nor destroyed; so where did the universe come from? Did the origin of universe require a super natural explanation? New understanding of cosmology however shows, despite our intuitions, the net energy of universe is 0 and the whole universe could indeed come out of the “quantum foam” of nothingness, according to Stephen Hawkins and others. A brief overview of the implications of this dramatic new insight.

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The Nature of Energy Laws of Thermodynamics

The study of energy is called thermodynamics. Unlike Newton’s laws of motion, the laws of thermodynamics did not spring fully formed from one mind. Rather, these ideas emerged gradually from the work of many researchers, and it was only later that they were set down in the form we now know.

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Life’s Persistent Questions: Part 2

Origin of a Malayalee (East of West, North or South Mallus are the best!!) Prevailing theory is that earliest humans evolved for several thousands in Africa before migrating out of Africa (In fact Africans are the most genetically diverse group, as can be seen in the difficulty matching HLA identical donors among Africans – as different African tribes have separated from each other many thousands of years ago. Humans elsewhere in the world all came from just from one small group of ancestors who left Africa about 50,000 years or so ago). All of the current world population can...

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