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Results tagged with particle-physics
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user 191654
Particle physics is the study of the fundamental forces of nature as they are embodied in the interactions of elementary and composite particles at high energies and short time and distance scales. DO NOT USE THIS TAG for point particles in classical mechanics.
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votes
What’s the equal/opposite reaction of a laser beam hitting something?
Just treat the light as a buch of photons. Each one carries an energy depenent momentum
$$ p = \frac{E}{c} = \frac{\hbar \omega}{c} = \hbar k$$
When a photon gets absorbed, it transfers its momentum t …
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