Light, Sound, Radio Waves: Up/Down Motion?

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do light, sound, and radio waves move/vibrate in an up and down motion?
 
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AH020387 said:
do light, sound, and radio waves move/vibrate in an up and down motion?

sound waves, no, they are compressions or decompressions, and their displacements are forward and backward

light and radio waves, yes (but there's nothing to displace)

you need to do extensive reading on this, to understand it … start with wikipedia :smile:
 
Insights auto threads is broken atm, so I'm manually creating these for new Insight articles. Towards the end of the first lecture for the Qiskit Global Summer School 2025, Foundations of Quantum Mechanics, Olivia Lanes (Global Lead, Content and Education IBM) stated... Source: https://www.physicsforums.com/insights/quantum-entanglement-is-a-kinematic-fact-not-a-dynamical-effect/ by @RUTA
If we release an electron around a positively charged sphere, the initial state of electron is a linear combination of Hydrogen-like states. According to quantum mechanics, evolution of time would not change this initial state because the potential is time independent. However, classically we expect the electron to collide with the sphere. So, it seems that the quantum and classics predict different behaviours!
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