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Q: If Earth were smaller than it is but the Alexandria-to-Syene distance were the same would the shadow of the vertical pillar in Alexandria be longer or shorter at noon during the summer solstice?
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How does the Sun's vertical ray change from the Winter Solstice to the Summer Solstice?

The vertical rays appear to move from the Tropic of Capricorn, across the Equator, to the Tropic of Cancer.


Where is the most vertical ray of the sun?

These most vertical rays can occur anywhere between the tropic of cancer and the tropic of capricorn. The tropic of cancer's most vertical rays occur at noon on the summer solstice, and vice versa. There is a well in Cyene, a city in southern egypt, where the sunlight casts no shadow at high noon. Eratosthenes the Greek, a librarian at Alexandria, used this fact to calculate the circumference of the earth.


Are the sun's rays vertical at the Tropic of Cancer during the summer solstice?

That happens on June 21.It's the Summer Solstice for the northern Hemisphere, but it's the beginning of Winter in the southern Hemisphere.


Is longitude horizontal?

Lines of longitude are vertical but they measure horizontal distance(In degrees,not kilometers or miles)between Greenwich Mean Time(GMT) and you so the lines are vertical,not horizontal. However,longitude measures horizontal distance,not vertical distance.


What is the vertical drop of a stream channel over a certain distance is called what?

The vertical drop of a stream channel over distance is known as the Gradient.


What is the vertical distance from the crest of a wave to the trough?

Vertical distance from a wave's highest point to it's lowest point is called the amplitude of a wave.


What is the vertical drop of a stream channel over a certain distance called?

The vertical drop of a stream channel over distance is known as the Gradient.


What does height equal?

The distance in the vertical direction.


What is the vertical distance from the waterline to the gunwale?

freeboard


Half the vertical distance between the crest and through of a wave is called the?

The vertical distance between a wave's midpoint and its crest or trough is called is peak amplitude. This differentiates this measurement from the vertical distance from a crest to a trough, which is called its peak-to-peak amplitude.


At noon on June 21 the vertical ray of the sun strikes the earth at?

The sun is directly over the Tropic of Cancer on the Summer Solstice.


What is the ratio of the vertical distance to the horizontal distance?

It is a measure of the average gradient or slope.