If light is a electromagnetic wave

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Light, as an electromagnetic wave, is perceived through various forms, such as visible light that allows us to see and infrared radiation that warms our skin. The energy from light can be both beneficial and harmful; for instance, sunlight can cause sunburn with prolonged exposure. Additionally, intense light sources like lasers can lead to serious eye damage. The discussion highlights the dual nature of light's energy, emphasizing both its perceptible effects and potential dangers. Understanding these aspects is crucial in recognizing how electromagnetic energy interacts with our environment.
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now if light is an electromagnetic wave then why don't we realize the electromagnetic energy on lighting up a bulb or do we feel it? if yes then in what form?
 
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Hi,

I'd say we do perceive the energy, e.g. we can see light with our eyes or we feel our skin gets warmer if exposed to sunlight. Sometimes, it can also be damaging if laser light comes into your eye you can become blind, or if your skin is exposed too long to sunlight, you get a sunburn.
 

Thread 'What determines if wave components are independent vs coherent?'

I'm working through something and want to make sure I understand the physics. In a system with three wave components at 120° phase separation, the total energy calculation depends on how we treat them: If coherent (add amplitudes first, then square): E = (A₁ + A₂ + A₃)² = 0 If independent (square each, then add): E = A₁² + A₂² + A₃² = 3/2 = constant In three-phase electrical systems, we treat the phases as independent — total power is sum of individual powers. In light interference...
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