How does Quantum Physics explain light?

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Quantum physics describes light as exhibiting both wave-like and particle-like properties, known as wave-particle duality. This duality allows light to interact with objects in complex ways, influencing phenomena such as reflection, refraction, and absorption. The interaction of light with matter is governed by quantum mechanics, which explains how photons can be absorbed or emitted by atoms. Understanding these interactions is crucial for advancements in technologies like lasers and quantum computing. For a deeper exploration of these concepts, refer to the linked physics FAQ.
MegaDeth
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I've gotten quite used to that light is both a wave and particle but how does it interact with objects?
 
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Thread 'Two equivalent statements of time reversal symmetric Hamiltonian'

Time reversal invariant Hamiltonians must satisfy ##[H,\Theta]=0## where ##\Theta## is time reversal operator. However, in some texts (for example see Many-body Quantum Theory in Condensed Matter Physics an introduction, HENRIK BRUUS and KARSTEN FLENSBERG, Corrected version: 14 January 2016, section 7.1.4) the time reversal invariant condition is introduced as ##H=H^*##. How these two conditions are identical?
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