WebThe answer is simple: Yes, stars really do produce that many photons.This calculation is a solid (though very rough) approximation that a star the size of the sun might emit about $10^{45}$ visible photons per second (1 followed by 45 zeros, a billion billion billion billion billion photons).. You can do the calculation: If you're 10 light-years away from that star, … Web2 hours ago · For security and affordability, we must shore up renewable energy. Bangladesh's renewable energy policy of 2008 set the goal of 10 percent total electricity generation from renewable sources by ...
5.2 The Electromagnetic Spectrum - Astronomy 2e OpenStax
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Web2 days ago · Clean energy industry a new driving force. Breathtaking view: A man stands on a cliff overlooking wind turbines on an island in the Fujian province. The country’s … WebApr 16, 2024 · This process repeats until iron begins appearing in the core. Iron fusion absorbs energy, so the presence of iron causes the core to collapse. If the star is massive enough, the implosion creates a supernova. Smaller stars like the sun contract peacefully into white dwarfs while their outer shells radiate away as planetary nebulae. WebFusion reactions are the primary energy source of stars and the mechanism for the nucleosynthesis of the light elements. In the late 1930s Hans Bethe first recognized that the fusion of hydrogen nuclei to form deuterium is exoergic (i.e., there is a net release of energy) and, together with subsequent nuclear reactions, leads to the synthesis of … detach key on surface