You can hear AM stations farther away more at night due to a condition known as SKIP, or Skywave Propagation. The propagation of AM radio waves changes drastically from daytime to nighttime. This change in AM radio propagation occurs at sunset due to radical shifts in the ionospheric layers, which persist throughout the night.
During daytime hours when ionospheric reflection does not occur to any great degree, AM signals travel principally by conduction over the surface of the earth. A condition known as "groundwave" propagation.
Useful daytime AM service is generally limited to a radius of no more than about 100 miles, even for the most powerful stations. However, during nighttime hours the AM signals can travel over hundreds of miles by reflection from the ionosphere, a phenomenon called "skywave" propagation.
Basically the AM signal bounces off the ionosphere back to the earth rather than traveling in a direct line. This bounce allows the signal to be heard over vast distances. Amateur radio operators call this talking skip.
The A section typically refers to the main theme or melody of a piece in music. In an ABA form, the A section is heard at the beginning and then returns after the B section.
You can preserve sound by recording it on a device like a microphone or smartphone. For vision, you can preserve it by capturing images or videos with a camera or smartphone. Storing these recordings in digital or physical formats can help ensure they can be seen or heard again in the future.
The A section would likely be heard 3 times throughout the piece in an ABACA form. It is the main theme that provides coherence and structure to the music. The B and C sections serve as contrasting episodes to the recurring A theme.
well, I think it is oxygen itself.....i have heard my teachers say "it needs a lot of oxygen to work".i haven't heard anybody say 'oxygens'or any other ways
In an ABABACA form, the "A" section would likely be heard three times. This is because the form typically involves alternating between different sections (A, B, C) with the A section repeated more than once in the structure.
AM radio waves bounce off the ionosphere. Favorable weather conditions and lack of sunspot activity enhance the waves' ability to bounce between the earth's surface and atmosphere, allowing the broadcast to travel a greater distance.
I guess technically the radio is still receiving broadcasts, but without an amp, you can't get them to be heard.
The main factors that affect the distance sound travels before it can no longer be heard are the intensity of the sound source, obstacles in the environment that absorb or reflect sound waves, and atmospheric conditions like temperature, humidity, and wind speed.
The range of distance within which sound can be heard is called the audible range. This refers to the distance at which sound waves are able to reach a person's ear and be perceived as sound.
200 feet
Have you heard about the new math teacher? When she heard the bell, she went to class. They got scared because they heard strange noises. They hit the ground when they heard gunfire.
depends on where you are and how hard you play but pretty far.(farther then a flute)
The rattling of heavy-duty industrial machinery could be heard, from a great distance.
I heard it is ten hours by bus.
Atmospheric condtions are conditions of how hot or cold something is, you might of heard people talking about Earth's atmospheric conditions soo its pratically describing Earth's atmospheric conditions.
Radio Disney is heard on different stations in each city where it broadcasts. In order to tell you the station nearest to you, we'd have to know where you are (the city) when you listen to the radio.
If a crack or pop is heard, it will probably be a bone crack or break.