Importance of Physics in the Modern World
By PatrickB, eHow Contributor
Physics is second only to mathematics in the purity of its principles. Physics describes how the natural world works through applied mathematical formulas. It deals with the fundamental forces of the universe and how they interact with matter looking at everything from galaxies and planets to atoms and quarks and everything in between. All other natural sciences stem from physics. Chemistry is essentially applied physics and biology is essentially applied chemistry. Physics theory is responsible for the breakthroughs in electronics that precipitate advances in modern computers and electronic media. 1. Electricity
* One of the biggest discoveries that humankind has ever made is electricity. Through a proper understanding of physics, we have been able to harness it into something useful for electricity, which is just a large collection of electronics. By creating a voltage differential through something as simple as a battery, we can make electrons move, which is the entire basis of electricity. Moving electrons power the circuits that allow radios, televisions, lights and every other electronic device to work. Transistor
* A transistor is the most basic part of a computer that has allowed for the creation of computer chips and has fueled the computer age. The transistor was developed through a breakthrough in solid state physics---the invention of the semiconductor. Semiconductors are simply pieces of elements that act differently under differerent temperatures and voltages. This means that upon different applications of voltage, a semiconductor can be made to hold information, which is stored because, until you apply a voltage to change it, a semiconductor outputs a high or low voltage. High voltages are interpreted as 1s and low voltages are interpreted as 0s. Through this simple system, all computers are able to store information in billions of little transistors. Flight...
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