What is the primary difference between the radio horizon and the natural horizon?

What is the primary difference between the radio horizon  and the natural horizon?
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1 Answer

Answer :

Sea water.
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Related questions

For a space wave transmission, the radio horizon distance of a receiving antenna with a height of 64 meters is approximately A. 8 km B. 32 km C. 64 km D. 256 km

Description : For a space wave transmission, the radio horizon distance of a receiving antenna with a height of 64 meters is approximately A. 8 km B. 32 km C. 64 km D. 256 km

Last Answer : B. 32 km

What phenomenon causes the radio-path horizon distance to exceed the geometric horizon? A. Diffraction B. Ducting C. Reflection D. Refraction

Description : What phenomenon causes the radio-path horizon distance to exceed the geometric horizon? A. Diffraction B. Ducting C. Reflection D. Refraction

Last Answer : D. Refraction

For a space wave transmission, the radio horizon distance of a transmitting antenna with a height of 100 meters is approximately:A. 10 km B. 40 km C. 100 km D. 400 km

Description : For a space wave transmission, the radio horizon distance of a transmitting antenna with a height of 100 meters is approximately: A. 10 km B. 40 km C. 100 km D. 400 km

Last Answer : B. 40 km

What phenomenon causes the radio-path horizon distance to exceed the geometric horizon? A. E-layer skip. B. D-layer skip. C. Auroral skip. D. Radio waves may be bent.

Description : What phenomenon causes the radio-path horizon distance to exceed the geometric horizon? A. E-layer skip. B. D-layer skip. C. Auroral skip. D. Radio waves may be bent.

Last Answer : D. Radio waves may be bent.

How far away is the radio horizon of an antenna 100ft high? A. 14.14 mi B. 40km C. 14.14 km D. 40 mi

Description : How far away is the radio horizon of an antenna 100ft high? A. 14.14 mi B. 40km C. 14.14 km D. 40 mi

Last Answer : A. 14.14 mi

If the angle of attack is increased beyond the critical angle of attack, the wing will no longer produce sufficient lift to support the weight of the aircraft: a. Unless the airspeed is greater than the normal stall speed b. Regardless of airspeed or pitch attitude c. Unless the pitch attitude is on or below the natural horizon d. In which case, the control column should be pulled-back immediately

Description : If the angle of attack is increased beyond the critical angle of attack, the wing will no longer produce sufficient lift to support the weight of the aircraft: a. Unless the airspeed is greater ... below the natural horizon d. In which case, the control column should be pulled-back immediately

Last Answer : b. Regardless of airspeed or pitch attitude

What is the primary difference between the NPN and PNP amplifiers?

Description : What is the primary difference between the NPN and PNP amplifiers?

Last Answer : The polarity of the source voltage

What is the primary difference between the pump signal of a simple parametric amplifier and the pump signal of a nondegenerative parametric amplifier?

Description : What is the primary difference between the pump signal of a simple parametric amplifier and the pump signal of a nondegenerative parametric amplifier?

Last Answer : The pump signal of a nondegenerative parametric amplifier is higher than twice the input signal.

What is the primary difference in construction between the basic magnetron and the negativeresistance magnetron?

Description : What is the primary difference in construction between the basic magnetron and the negativeresistance magnetron?

Last Answer : The negative-resistance magnetron has a split plate

What is the primary difference between a diode and a triode?

Description : What is the primary difference between a diode and a triode?

Last Answer : The triode contains a third element called the control rid.

What is the primary difference between the major and minor lobes of a radiation pattern?

Description : What is the primary difference between the major and minor lobes of a radiation pattern?

Last Answer : Major lobes have the greatest amount of radiation.

Which radio frequency bands use the tropospheric scattering principle for propagation of radio waves?

Description : Which radio frequency bands use the tropospheric scattering principle for propagation of radio waves?

Last Answer : Vhf and above

How does temperature inversion affect radio transmission?

Description : How does temperature inversion affect radio transmission?

Last Answer : It can cause vhf and uhf transmission to be propagated far beyond normal line-of-sight distances.

How is the term "temperature inversion" used when referring to radio waves?

Description : How is the term "temperature inversion" used when referring to radio waves?

Last Answer : It is a condition where layers of warm air are formed above layers of cool air.

How does fog affect radio waves at frequencies above 2 gigahertz?

Description : How does fog affect radio waves at frequencies above 2 gigahertz?

Last Answer : It can cause attenuation by absorbtion.

How do raindrops affect radio waves?

Description : How do raindrops affect radio waves?

Last Answer : They can cause attenuation by scattering.

What happens to the radio wave if the luf is too low?

Description : What happens to the radio wave if the luf is too low?

Last Answer : When luf is too low it is absorbed and is too weak for reception.

What are the two main sources of emi with which radio waves must compete?

Description : What are the two main sources of emi with which radio waves must compete?

Last Answer : Natural and man-made interference.

What is the skip zone of a radio wave?

Description : What is the skip zone of a radio wave?

Last Answer : A zone of silence between the ground wave and sky wave where there is no reception.

There is a maximum frequency at which vertically transmitted radio waves can be refracted back to Earth. What is this maximum frequency called?

Description : There is a maximum frequency at which vertically transmitted radio waves can be refracted back to Earth. What is this maximum frequency called?

Last Answer : Critical frequency.

What factor determines whether a radio wave is reflected or refracted by the ionosphere?

Description : What factor determines whether a radio wave is reflected or refracted by the ionosphere?

Last Answer : Thickness of ionized layer.

What is the best type of surface or terrain to use for radio wave transmission?

Description : What is the best type of surface or terrain to use for radio wave transmission?

Last Answer : Radio horizon is about 1/3 farther.

What is the determining factor in classifying whether a radio wave is a ground wave or a space wave?

Description : What is the determining factor in classifying whether a radio wave is a ground wave or a space wave?

Last Answer : Whether the component of the wave is travelling along the surface or over the surface of the earth.

Which layer of the atmosphere has relatively little effect on radio waves?

Description : Which layer of the atmosphere has relatively little effect on radio waves?

Last Answer : Stratosphere.

What is the term used to describe the basic frequency of a radio wave?

Description : What is the term used to describe the basic frequency of a radio wave?

Last Answer : Fundamental frequency.

What is one of the major reasons for the fading of radio waves which have been reflected from a surface?

Description : What is one of the major reasons for the fading of radio waves which have been reflected from a surface?

Last Answer : Shifting in the phase relationships of the wave.

What is the term used to describe a whole number multiple of the basic frequency of a radio wave?

Description : What is the term used to describe a whole number multiple of the basic frequency of a radio wave?

Last Answer : Harmonic frequency or harmonics.

What connecting link is used to transfer energy from a radio transmitter to its antenna located on

Description : What connecting link is used to transfer energy from a radio transmitter to its antenna located on

Last Answer : Transmission line.

What is the main use of a radio teletypewriter?

Description : What is the main use of a radio teletypewriter?

Last Answer : High speed automatic communications across ocean areas.

What type of amplifier would be used to amplify the signal from a radio antenna?

Description : What type of amplifier would be used to amplify the signal from a radio antenna?

Last Answer : An rf voltage amplifier.

How far away can the aided eye see in a level line to the horizon?

Description : How far away can the aided eye see in a level line to the horizon?

Last Answer : I heard 25 miles.

Is the singularity at the centre of a black hole subject to quantum effects and would they influence the event horizon?

Description : Is the singularity at the centre of a black hole subject to quantum effects and would they influence the event horizon?

Last Answer : answer:I don't see how we could know given current methods of measurement. We can't see inside the event horizon because that's the point beyond which light cannot escape. So the event ... speed. Density of mass approaches infinity. Our laws explode in our paces when fed conditions like these.

If there were such a place as Shangri-La (Lost Horizon) where people did not age, would it follow that other mammals would also not age?

Description : If there were such a place as Shangri-La (Lost Horizon) where people did not age, would it follow that other mammals would also not age?

Last Answer : Mmmm, interesting question. The book and movie certainly didn’t touch on that, but I imagine all animal, insect and vegetable life in that idyllic environment would age more slowly relative to each its own natural lifespan.

What does this quote mean "But none of them owns the landscape. There is a property in the horizon which no man has but he whose eye can integrate all the parts, that is, the poet. This is the best part of these men’s farms, yet to this their warranty-deeds give no title"?

Description : What does this quote mean "But none of them owns the landscape. There is a property in the horizon which no man has but he whose eye can integrate all the parts, that is, the poet. This is the best part of these men’s farms, yet to this their warranty-deeds give no title"?

Last Answer : I think he’s saying you can see and appreciate the beauty of nature but never own it?

Why does the horizon always appear to be at eye level?

Description : Why does the horizon always appear to be at eye level?

Last Answer : answer: Horizon line-is always at eye level. Picture yourself at the seashore and looking out at the ocean you notice that the water meets the sky at your eye level. This never changes. You may ... your eye level remains at the height of your eyes, not down where you are looking. Studio Chalkboard

In Alaska, does the sun just go flat across the horizon?

Description : In Alaska, does the sun just go flat across the horizon?

Last Answer : There is a video of it here. I’m not sure when that would happen.

Where is your moral event horizon?

Description : Where is your moral event horizon?

Last Answer : I got one of those? It must be around here someplace. I have morals but the hell I know the kind of ones I have. I’m not really good or really bad. I’m kind of in the middle of everything.

Anything on the horizon to compete with Amazon's KINDLE?

Description : Anything on the horizon to compete with Amazon's KINDLE?

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Whats your favorite rendition of "Over the Horizon" (Samsung)?

Description : Whats your favorite rendition of "Over the Horizon" (Samsung)?

Last Answer : S3's.

Explain the terms soil horizon -Geography

Description : Explain the terms soil horizon -Geography

Last Answer : A soil horizon is a layer parallel to the soil surface, whose physical characteristics differ from the layers above and beneath. Each soil type usually has three or four horizons. Horizons are ... most cases by obvious physical features, chiefly colour andtexture. The 'O' stands for organic matter.

Define soil horizon -Geography

Description : Define soil horizon -Geography

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My shallow hills are the faces of kings. My horizon is always near. My music sends men to the grave. My absence sends men to work. What am I? -Riddles

Description : My shallow hills are the faces of kings. My horizon is always near. My music sends men to the grave. My absence sends men to work. What am I? -Riddles

Last Answer : Coins.

A precious stone as clear as diamond. Seek it out when the suns near the horizon. Though you can walk on water with its power. Try to keep it, and it will vanish in an hour. What am I? -Riddles

Description : A precious stone as clear as diamond. Seek it out when the suns near the horizon. Though you can walk on water with its power. Try to keep it, and it will vanish in an hour. What am I? -Riddles

Last Answer : Ice.

How did the New Horizon Telescope capture the image of a black hole? -Space

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Last Answer : Using the Event Horizon Telescope, scientists obtained an image of the black hole at the center of galaxy M87, outlined by emission from hot gas swirling around it under the influence of strong gravity near its event horizon.

Since the area of event horizon increases as matter falls into it, do stellar black holes ultimately become supermassive black holes as time progresses? -Space

Description : Since the area of event horizon increases as matter falls into it, do stellar black holes ultimately become supermassive black holes as time progresses? -Space

Last Answer : The existence of this black hole was first guessed at because the Messier87 galaxy when imaged at radio frequencies shows the signature twin-jets of plasma that are squirted out at near-relativistic ... matter, if one has telescopes with sharp enough vision, which the Event Horizon Telescope had.

A black hole 'belches' light and radiation whenever something falls into its event horizon. What does that mean and why does that happen? -Space

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Last Answer : A black hole is an astronomical object with a gravitational pull so strong that nothing, not even light, can escape it. A black hole's “surface,” called its event horizon, defines the boundary where the velocity needed to escape exceeds the speed of light, which is the speed limit of the cosmos

What quantity of stuff falls inexorably past the event horizon of the M87 black hole, never to be seen again, during the span of a single day? -Space

Description : What quantity of stuff falls inexorably past the event horizon of the M87 black hole, never to be seen again, during the span of a single day? -Space

Last Answer : The equivalent of 90 Earths

The Event Horizon Telescope required multiple telescopes, with split-second synchronization, to capture the image of the M87 black hole. How many telescopes were used? -Space

Description : The Event Horizon Telescope required multiple telescopes, with split-second synchronization, to capture the image of the M87 black hole. How many telescopes were used? -Space

Last Answer : Recognizing their vision and leadership within the Event Horizon Telescope (EHT), the National Academy of Sciences (NAS) awards Shep Doeleman and Heino Falcke the Henry Draper Medal. ... a recent, original investigation in astronomical physics of sufficient importance and benefit to science.

The Event Horizon Telescope captured the now-iconic image of the M87 black hole. Why is it called that? -Space

Description : The Event Horizon Telescope captured the now-iconic image of the M87 black hole. Why is it called that? -Space

Last Answer : The new image is the stunning achievement of the event horizon project, a global collaboration of more than 200 scientists using an array of observatories scattered around the world, from Hawaii to the ... s black hole in April 2017. It then took two years for scientists to assemble the mugshot.

When a painter uses linear perspective with low horizon line in the painting, this makes the viewer feel as if he or she is?

Description : When a painter uses linear perspective with low horizon line in the painting, this makes the viewer feel as if he or she is?

Last Answer : above the objects in a painting.