Science Foundations

[fineman2007]

Radioactivity


By p. Andrew Karam, Ben P. Stein

TELECHARGER de ifile.it
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Description

Almost everyone and everything in the world is radioactive, from bananas in the kitchen to the bricks and concrete in homes, as well as most things that can be eaten, worn, played with, or touched every day. Radiation can be found everywhere since the universe began and Earth first formed. But what does 'radioactive' really mean? "Radioactivity" explains the science behind radiation, from the radiation in the body to the radiation in the environment; how radiation can create energy and cause destruction; and, how it saves lives every day​

 

[fineman2007]

The Big Bang
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By Mike Perricone

TELECHARGER de ifile.it

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Description
Less than a hundred years ago, science seriously debated whether a cosmic array of stars and galaxies extended beyond the Milky Way. Discoveries and theories have revealed a universe of increasing enormity, complexity, and mystery. Beginning with an overview of the scientific method, "the big bang" follows the pioneering observations of Edwin Hubble and the early insights in cosmological theory by Alexander Friedmann and Father Georges Lemaitre. The dramatic discoveries of the cosmic microwave background and the accelerating expansion of the universe set the stage for compelling new evidence about big bang origins. The theory of inflation and the concept of dark energy have established the context for our current outlook on the cosmos. New space probes and space telescopes are the next steps in the quest to understand the origins of the universe
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[Alhashemiah]

اقدر لك جهودك اخي ..بارك الله فيك
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[chemistry]

حياك الله أخى العزيز​

 

[fineman2007]

اقدر لك جهودك اخي ..بارك الله فيك
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بل انا شاكر لكي تشجيعك و كلماتك الطيبة اختي الغالية زين الشرف

تقبل الله منا ومنكم الصيام و القيام
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[fineman2007]

حياك الله أخى العزيز​

وجزاك كل خير اخي الغالي الكميائي chemistry
تقبل الله منا ومنكم الصيام و القيام
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