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Because in day time the ionisation is less in the D layer of the Sky. So it absorbs the medium waves because of its lower frequencies. In night time the D layer vanishes and the Medium waves travel towards the F layer and reflected back to the earth from a long distance. That's why Medium waves are clearly heard in night times from a long distance.
What else can I help you with?
What are some advantages of night vision devices?
Because humans have poor night vision.
Why is the resistivity of a potentiometer high?
Because you touch yourself at night.
Why does the range of radio waves increase at night?
If you mean short waves, the answer is that the lower layer of the ionosphere (D layer) dissapears at night so short wave signals then bounce off a higher layer (F1 or F2) of the ionosphere and can travel further.
Why do floorboards in your house creak at night after the heating goes off?
Because wood expands and contracts with varying changes in temperature.
Why we need high power to generate AM signal and low power to generate FM signal?
The reason FM has lower power and AM has higher power is because the more power that an AM signal has, the farther it will go, but FM does not work that way. AM waves can bounce off of the atmosphere, especially at night. This is the reason that you can hear AM stations from far away at night. FM, on the other hand, can't bounce. FM waves only go in a straight line from the tower and no matter how much power you transmit with, an FM wave will only go a short distance. AM Waves can travel through trees and buildings, and FM can't.
Would a barking dog produce sound wave that travel faster during day or at night?
The speed of sound waves is dependent on the temperature of the medium they are traveling through. During the day, the temperature is typically warmer, which results in faster sound wave propagation compared to at night when temperatures are cooler. Therefore, a barking dog would produce sound waves that travel faster during the day than at night.
Why sound travels faster during night time?
Sound typically travels faster at night because the air is cooler and more dense, allowing sound waves to propagate more efficiently. In addition, the ground is often cooler at night which can help sound waves to travel farther without being absorbed or scattered as much. This combination of factors contributes to faster sound transmission during nighttime.
Why is the speed of sound in the water louder at night?
A speed can't be louder or less loud. The sound itself can be louder; or the speed can be faster.
Does a sound travel faster at night or during the day?
Sound is not greater during the nighttime. You are just more wary of it as you are tired and don't want to wake anyone up (if you live with someone else.)
Why is the velocity of sound faster at night than daytime?
Sound travels faster at night because the air is cooler and more dense, which allows sound waves to propagate more efficiently. During the day, the warmer temperatures and accompanying more turbulent air lead to slower sound propagation.
Why heart beats low at night?
because you are active at night, so the heart has no reason to beat faster.
Why voltage is more at night and why fan rotate faster at night?
possibly because less appliances and lights are on at night, more energy can go to the fan
Why your car seems running faster at night?
because it is harder to see whats around you
Why is it not possible to travel faster than the speed of light?
because nothing is faster than light. for example let's say it's a clear night and you have a flashlight with you if you take your flashlight and aim it at the moon it would reach the moon in 8 minutes, try to see if you could get to the moon in 8 minutes
Does your heart beat faster when you run or when you have a night mare?
yes it does. Because in a nightmare you might b frightened. And when you're running you're heart beats faster because you need more oxygen
When was Faster Than the Speed of Night created?
Faster Than the Speed of Night was created in 1983-04.
Why is it louder at night?
It may seem louder at night because there is less ambient noise, allowing sounds to travel further and be more noticeable.
