Question

Почему мы слышим звук от летящего комара а от летящей птицы не слышим

Answer 1

Ухо человека воспринимает колебания частотой от 20 Гц до 20000 Гц. Птица машет крыльями реже чем 20 раз в секунду, а частота взмахов крыльев комара 400 Гц. Поэтому мы птицу не слышим, а комара да

Answer 2

Why can we hear the sound of a flying mosquito but not a flying bird?

When it comes to hearing the sound of a flying mosquito but not a flying bird, there are a few factors at play. Let's explore them in more detail:

1. Frequency of sound: The frequency of sound produced by an object determines whether we can hear it or not. Mosquitoes produce high-frequency sounds, typically in the range of 20,000 to 30,000 Hz, which is above the audible range for many humans. On the other hand, birds produce sounds in a lower frequency range that is within our audible range, typically between 1,000 and 5,000 Hz.

2. Sound intensity: The intensity or volume of sound also plays a role in our ability to hear it. Mosquitoes produce relatively quiet sounds, while birds can produce louder sounds, especially during flight. The intensity of the sound produced by a bird may be enough for us to hear it, whereas the quieter sound of a mosquito may not be as easily detectable.

3. Size of the sound source: The size of the sound source can affect how far the sound travels and how easily it reaches our ears. Mosquitoes are small insects, and their sound source is relatively close to our ears when they fly near us. This proximity allows us to hear the sound they produce more clearly. Birds, on the other hand, are larger and their sound source is farther away from us when they fly. This distance can result in a decrease in the sound intensity by the time it reaches our ears, making it harder for us to hear the sound.

4. Background noise: The presence of background noise can also affect our ability to hear certain sounds. In a quiet environment, the sound of a flying mosquito may be more noticeable. However, in a noisy environment, such as a busy street or a crowded area, the sound of a mosquito may be masked by the surrounding noise, making it harder to hear. Birds, on the other hand, can produce louder sounds that may be more easily heard even in noisy environments.

In summary, the high-frequency, relatively quiet sound produced by a flying mosquito, combined with its proximity to our ears, allows us to hear it more easily. On the other hand, the lower-frequency, louder sound produced by a flying bird, combined with its larger size and distance from our ears, makes it more difficult for us to hear. Additionally, background noise can also play a role in our ability to detect these sounds.

I hope this explanation helps! Let me know if you have any further questions.