By Fayer M.D.
Physics is a posh, even daunting subject, however it is additionally deeply enjoyable even exciting. And liberated from its mathematical underpinnings, physics without warning turns into available to somebody with the interest and mind's eye to discover its good looks. technological know-how with no math? it isn't that strange. for instance, we will comprehend the idea that of gravity with out fixing a unmarried equation. So for all those that can have contemplated what makes blueberries blue and strawberries pink; in the event you have questioned if sound fairly travels in waves; and why gentle behaves so in a different way from the other phenomenon within the universe, it is all an issue of quantum physics. "Absolutely Small" offers (and demystifies) the realm of quantum technological know-how like no publication earlier than. It explores clinical thoughts from debris of sunshine, to chance, to states of topic, to what makes greenhouse gases undesirable in enormous intensity, yet utilizing examples from the typical global. not easy with out being intimidating, obtainable yet no longer condescending, "Absolutely Small" develops the reader's instinct for the very nature of items at their most simple and exciting degrees.
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Additional resources for Absolutely Small
VERY RED LIGHT DOES NOT EJECT ELECTRONS The one observation left to explain is why do the electrons stop coming out of the metal when the light is tuned far enough to the red? Einstein resolved this as well. When an electron is ejected from a metal by a photon, it has a certain kinetic energy. Kinetic energy means the energy associated with its motion. The higher the energy, the faster the electron moves. The kinetic energy is Ek where the subscript k stands for kinetic. The formula for kinetic energy is 1 given by Ek סmV2, where m is the mass and V is the velocity.
THE WAVE PICTURE DOESN’T WORK The problem for classical theory with these observations is that they are totally inconsistent with a wave picture of light. First, consider the intensity dependence. In the wave picture, a higher light intensity means that the amplitude of the wave is larger. 1. The photoelectric effect. Light impinges on a metal, and electrons (negatively charged particles) are ejected. In the classical picture, light is a wave, and the interaction of the wave with the electrons in the metal causes them to ﬂy out.
The interference pattern does not disappear at low intensity. The model is wrong! A NEW DESCRIPTION OF PHOTONS IN THE INTERFEROMETER Here is where the complete change in thinking is required that will bring us back to Schro¨dinger’s Cats. How is it possible to have an interference pattern when only one photon enters the interferometer at a time? Our understanding of this problem and the nature of LIGHT: WAVES OR PARTICLES? 51 quantum mechanics in general is based on the conceptual interpretation of the mathematical formalism that is strongly associated with the work of Max Born (1882–1970).