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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.
What else can I help you with?
Why can some am broadcasts be heard for great distances under certain conditions?
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.
How does distance affect distribution?
Distance can impact the distribution of species by creating barriers that limit the movement of organisms, leading to isolation and potential genetic differentiation. Greater distances can also result in different environmental conditions, which can affect the ability of species to survive and reproduce in a particular area. Overall, greater distances often lead to greater differences in species composition and abundance between locations.
Which instrument is used to transmit sound to greater distances?
A microphone is used to convert sound waves into electrical signals that can be transmitted through cables or wirelessly to audio equipment or speakers for amplification and distribution over greater distances.
What factors determine range available from sky waves?
The factors that determine the range available from sky waves include frequency of the signal, height of the transmitting and receiving antennas, ionospheric conditions, time of day, and solar activity levels. A higher frequency signal can travel further distances via sky waves, while lower ionospheric layers can reflect signals back to Earth at greater distances.
What would happen to the distances between the moving ball images if the unbalanced force were greater?
If the unbalanced force acting on the moving balls were greater, the distances between the moving ball images would likely increase as the balls would accelerate faster and cover more ground in the same amount of time. This would cause the balls to move further apart at a faster rate.
Why can some am broadcasts be heard for great distances under certain conditions?
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.
In adverse conditions stopping distances are greater?
In adverse conditions, such as rain, snow, or ice, stopping distances are greater due to reduced traction between the tires and the road surface. This decreased grip results in longer braking distances, as vehicles take longer to decelerate. Additionally, factors like visibility and driver reaction time can be compromised in such conditions, further extending the time and distance needed to come to a complete stop. Therefore, it's crucial for drivers to adjust their speed and increase following distances when faced with adverse weather conditions.
Are distance between the inner planet greater than the distances between the outer planet?
distances are greater between outer planets
How does distance affect distribution?
Distance can impact the distribution of species by creating barriers that limit the movement of organisms, leading to isolation and potential genetic differentiation. Greater distances can also result in different environmental conditions, which can affect the ability of species to survive and reproduce in a particular area. Overall, greater distances often lead to greater differences in species composition and abundance between locations.
Farming allowed people to spend more time?
traveling greater distances.
What are long-haul applications?
It is when transmission distances are greater than five miles
Do birds with longer or shorter wings fly faster?
Birds with longer wings generally have an advantage in soaring and gliding, which allows them to cover greater distances with less energy, but they may not always be faster in flapping flight. Shorter wings can provide greater maneuverability and faster flapping speeds, which can be advantageous in certain environments. Ultimately, the relationship between wing length and flight speed depends on the bird species, its flying style, and the specific conditions in which it is flying.
What are the distances between planets greater between the inner or outer planets?
The inner planets are closer together than the outer planets are.
What technology allowed the american indians to hunt from greater distances?
i don't know myself
Is 2 km less than or greater than 2000 m?
They are the same distances
Which instrument is used to transmit sound to greater distances?
A microphone is used to convert sound waves into electrical signals that can be transmitted through cables or wirelessly to audio equipment or speakers for amplification and distribution over greater distances.
What happens to the force of gravity of the distance increases?
At greater distances, the force of gravity becomes less.
