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Exploring the Four Fundamental Forces of Nature: Our Universe Up Close

Discover the four fundamental forces that govern interactions in nature: Gravity, Electromagnetism, the Strong Nuclear Force, and the Weak Nuclear Force. Each force has unique properties and strengths, influencing everything from the motion of galaxies to atomic stability. Gravity acts between masses, Electromagnetism involves charged particles, Strong Nuclear binds protons and neutrons, and the Weak Force is responsible for certain radioactive decays. Join us as we dive deeper into these forces and how they shape our universe—from the vast cosmos to the tiniest particles.

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Exploring the Four Fundamental Forces of Nature: Our Universe Up Close

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Presentation Transcript

  1. First, Some Basic Stuff • Forces of Nature • Our friend, the Universe … up close and far away

  2. All Interactions in Nature Seem to be the Result of Just 4 Fundamental Forces • Gravity – acts between objects which have the property we call MASS • Electromagnetism – acts between objects which have the property we call CHARGE • The Strong Nuclear Force – acts between certain nuclei: Baryons (protons, neutrons) • The Weak Nuclear Force – causes some kinds of “radioactive” decay.

  3. Strengths are VERY different • Gravity: 10-39 the strength of the Strong Force • Weak Force: 10-13 of the Strong Force • Electromagnetism: 1/137 of the Strong Force • Yes, the Strong Force…. Is the Strongest!

  4. For Now, Just Remember that there’s only 4 Forces and they account for ALL Processes (except maybe for Dark Energy?) • We’ll talk about each of these in more detail as needed, in explaining the workings of the stars, galaxies and the Universe

  5. A cool Java movie… • Zooming in from The Universe…. to the deep innards of the Proton by magnifying a power of 10 in size for each frame • Click on the link to get started…

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