# What is a particle accelerator? How do scientists use particle accelerators to study subatomic particles? What particle is exchanged to

###### Question:

1. What is a particle accelerator?
How do scientists use particle accelerators to study subatomic particles?
2. What particle is exchanged to generate each of the four fundamental forces?
3. What medical technologies (e.g. PET) rely on the physics of elementary particles?
What are the benefits of noninvasive procedures such as PET?
4. How is astronomy the oldest science?
5. How does the energy produced at the core of the Sun reach the photosphere?
6. Why won

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