General Knowledge - Physics - Discussion

Intensity (Objective) : It is a purely physical quantity that depends on the energy transmitted per unit area per unit time (Watt/m^{2}). It is measured using instruments (like a sound level meter) and does not depend on the listener's ear or brain. Thus, it has an objective existence.

Loudness (Subjective) : In contrast, "Loudness" is how our ears perceive sound. Two sounds of the same intensity may sound differently loud to different people depending on their hearing sensitivity. Therefore, loudness has a subjective existence.

Suppose many people are there in a room, then Sound intensity will be low but in case of vacant room or very few people inside the room, the Sound has more intensity. That mean it depends on the object. So, it is an object existence.

Nice explanation @Sunil.

And I want to know what is subjective existence? Please distinguish between objective and subjective existence.

What is object existence and subjective existence ?

@Sunil. Excellent explanation, Thank you.

Thanks for giving the explanation.

What is subjective existence?

Very useful, thanks.

Good explanation.

Thank you @Sunil.