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Light and radio signals seldom travel in straight lines through air, because the
pressure, temperature, and density of air change with altitude. Light and radio
signals almost always curve vertically, and usually downward.
If you were to draw a picture of the real earth's surface, with the real path of a
light beam or radio signal traveling above it, the surface of the earth would curve
downward on the drawing, and the light or radio signal would also curve above it.
The distance between the surface and the light or radio signal would change across
the drawing, depending on how strongly the signal curved, and in which direction
(up or down).
It would be possible to distort the drawing in such a way as to make the light
or radio signal appear to be a straight line. In order to do that, you'd have to
change the curvature of the earth's surface on the drawing, and maintain the
original spacing between the surface and the radio signal at every point.
The number by which you have to multiply the true earth radius in order to
make the light or radio signal's path appear straight on the drawing, is the
"effective earth radius factor". It's a characteristic of atmospheric conditions
(specifically, the vertical gradient of the atmosphere's index of refraction),
and it's used in designing the optimum physical configuration of point-to-point
radio links, i.e. how high above the ground to mount the antennas at each end
of the link.
What else can I help you with?
What If a planet has twice the mass of Earth its radius would have to be larger by a factor of 2 for the gravitational field strength at the planet and surface to be the same as on Earth and s?
If a planet has twice the mass of Earth, its radius would need to be larger than Earth's to maintain the same gravitational field strength at its surface. Specifically, to achieve equivalent gravitational acceleration, the radius must increase by a factor of about 1.414 (the square root of 2), not 2. This is because gravitational field strength is directly proportional to mass and inversely proportional to the square of the radius (g = G * M / r²). Therefore, a radius larger by a factor of 2 would actually result in a lower gravitational field strength than that of Earth.
What is Venus' radius as compared to the Earth's?
Venus has a radius of about 6,052 kilometers, which is about 95% of Earth's radius.
A satellite is at an altitude of one of earth radius. How does the gravitational force on the satellite compare to the force if it were on the surface of earth?
Since the distance from the Earth's center is doubled, the force will be reduced by a factor of 4.
The two cylinders below are similar. What is the length of the radius of the larger cylinder?
To determine the radius of the larger cylinder, we need to know the radius of the smaller cylinder and the scale factor between the two cylinders. If the scale factor is provided, multiply the radius of the smaller cylinder by this factor to find the radius of the larger cylinder. Without specific measurements or a scale factor, we cannot calculate the radius of the larger cylinder.
How does Venus compare with the earth radius and mass?
Venus' radius = 0.95 of Earth's Venus' mass = 0.815 of Earth's
What is the radius if the size factor is fifty percent of a circle?
radius is 2
If a planet has twice the mass of Earth its radius would have to be larger by a factor of 2 for the gravitational field strength at the planet and surface to be the same as on Earth and surface?
For a planet to have the same gravitational field strength at its surface as Earth while having twice its mass, its radius must increase. The gravitational field strength ( g ) is given by the formula ( g = \frac{G \cdot M}{R^2} ), where ( G ) is the gravitational constant, ( M ) is mass, and ( R ) is radius. If the mass ( M ) is doubled, to maintain the same gravitational field strength ( g ), the radius ( R ) must be increased by a factor of ( \sqrt{2} ), not 2. Therefore, the radius would need to be larger by a factor of approximately 1.414.
What happens if a circle's radius is tripled?
If the radius is tripled then the Area will be greater by a factor of 9. And the circumference will be greater by a factor of 3.
What is Earth and radius in kilometers What is Earth and radius in miles (1 kilometer 0.62 miles)?
The Earth's radius is approximately 6,371 kilometers and 3,959 miles.
What will be the weight of a body it is raised above the earth equal to its radius?
The weight of a body when raised above the Earth to a height equal to its radius will be 1/4 of its weight at the surface of the Earth. This is because the force of gravity decreases with distance from the center of the Earth, following an inverse-square law.
Who invent radius of earth?
If you are a believer, then God did but if you are not, then nobody did. The radius of the earth existed and therefore ots radius did before there was any form of life on earth to invent it.
If the radius of the earth were doubled how much gravity would you experience?
If the radius of the Earth were doubled, you would experience approximately one-fourth (1/4) of the original gravity. This is because gravity is inversely proportional to the square of the distance between two objects, so doubling the radius would reduce the gravitational force by a factor of 4.
