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What is the type of radiation stopped in the ionosphere?
Eletromagnetic radiation with a frequency below the ionosphere's plasma frequency will generally be reflected. The specific frequency depends on the density of ionospheric plasma which can vary at different altitudes, but also different geomagnetic latitudes and from day to night. For a typical daytime mid-latitude ionosphere, the most dense part of the ionosphere, (the "F" region), will reflect radio frequencies up to ~2.8Mhz (assuming an electron density of 1e11 m-3).
How does a cloudy night and a clear night relate to the greenhouse effect?
Both water vapor and clouds are great greenhouse gasses, they block the loss of heat into outer space (at night).
How does direct and indirect sunlight have effect on the seasons?
The direct and indirect sunlight takes effect on seasons because it could be day or night 24/7. Also it determines what season it is.
How far is the ionosphere from earth in miles?
The lower layers, the D and E layers are only a few tens of km - perhaps a hundred km at most. The F layers are of greater importance for ionospheric reflection, and may be up to 250 km. May be useful up to 800 km. These various layers have a frequency - dependent reflectivity, and this will change day and night according to the state of ionization and the illumination causing that.
What is the density of the ionosphere?
The density of the ionosphere varies significantly with altitude and time of day, typically ranging from about 10^4 to 10^6 electrons per cubic meter. This layer of the Earth's atmosphere, located between approximately 30 miles (48 km) and 600 miles (965 km) above the surface, contains ionized particles primarily due to solar radiation. During the day, ionization increases due to solar energy, leading to higher densities, while at night, the density decreases as ionization diminishes.
What reflects radio waves at night?
Ionosphere
What layer moves higher at night and lower in the day?
Ionosphere
Why can you only listen to am radio stations in a city near you but at night from a distant city?
...AM stations transmit hundreds of miles at night. This extended transmission is possible is because of the ionosphere -- one of the layers of the atmosphere. It is called the ionosphere because when the http://wiki.answers.com/sun.htmrays hit this layer, many of the http://wiki.answers.com/atom.htmthere lose electrons and turn into ions.As it turns out, the ionosphere reflects certain frequencies of radio waves. So the waves bounce between the ground and the ionosphere and make their way around the planet. The composition of the ionosphere at night is different than during the day because of the presence or absence of the sun. You can pick up some radio stations better at night because the reflection characteristics of the ionosphere are better 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.
What layer of the atmosphere do radio waves heading upward from earth often bounce off?
The Ionosphere reflects longer radio waves back to Earth. It varies in height going up at night giving the waves a long distance bounce.Flat vertical walls. Better refraction will Non-ferous metals. Horizontal plan will distort the image of the wave.\ CIV
Why can am radio transmission be heard over a long distance?
There's a whole lot to it, actually, and real scientific. But basically, you can get AM radio from a distance at night, and only local during the day, because the straight waves of radio bounce from the ionosphere back to earth. The ionosphere is composed differently, depending on if it's day or night. When it's nighttime, the ionosphere reflects much better, thus you can hear stations from farther away.
What is the type of radiation stopped in the ionosphere?
Eletromagnetic radiation with a frequency below the ionosphere's plasma frequency will generally be reflected. The specific frequency depends on the density of ionospheric plasma which can vary at different altitudes, but also different geomagnetic latitudes and from day to night. For a typical daytime mid-latitude ionosphere, the most dense part of the ionosphere, (the "F" region), will reflect radio frequencies up to ~2.8Mhz (assuming an electron density of 1e11 m-3).
How the ionosphere can be used to provide a world wide link?
Radio signals under 30 MHz (give or take) are reflected off the ionosphere back to Earth, whereas radio signals over 30 MHz (give or take) normally go straight through the ionosphere. The maximum usable frequency (MUF) is the highest frequency reflected by the layers in the ionosphere. This frequency changes from day to night and with the seasons. It is also greatly affected by the 11 year sun spot cycle. Sun spots cause solar wind. This is a major cause for the ionisation of the ionosphere.
Why during the day the radio only receives AM stations from a nearby City while at night you're able to hear a distant City's stations?
Energy from the sun interacts with the particles in the ionosphere, causing them to absorb AM radio frequencies. At night without solar energy, AM radio transmissions reflect off the ionosphere, allowing radio transmissions to be received at greater distances.
Does your height differ from the morning to the night?
yes
Does playing the Xbox all night effect your growth?
no. it does not effect your growth
Does skipping increases your height?
No. In principal the compression on the leg joints will "slightly" decrease your height. However this will be compensated during the night, when you will actually gain height.
