# Can you see the curvature of the earth from the Eiffel Tower?

Visual daytime observations show that the minimum altitude at which curvature of the horizon can be detected is **at or slightly below 35,000 ft**, providing that the field of view is wide (60 degrees ) and nearly cloud free.

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## What is the curve of the Earth called?

**hypsometric curve, also called Hypsographic Curve**, cumulative height frequency curve for the Earth’s surface or some part thereof. A hypsometric curve is essentially a graph that shows the proportion of land area that exists at various elevations by plotting relative area against relative height.

## Can you see the curve of the Earth from the Sears Tower?

**It is possible to see the effect of the curvature of the earth from sea level** (ships disappearing over the horizon). To actually see the curvature directly (ie to be able to see the horizon as an arc, rather than a straight line) requires an altitude of over 50,000 feet.

## How is the Earth’s curvature measured?

- Get two lasers and put them very close to the floor about 2 or 4 meters apart one in front of the other.
- Aim the two lasers so they both shoot down the terminal along the same line. …
- Measure the height of the two lasers above the floor.

## How far away can you see a ship at sea?

Assuming a clear day, you can actually see another ship breach the horizon about **12 miles** away (19.3 kilometres or 10.4 nautical miles). Sneaking up on a ship tends be rather tricky! Adverse weather such as actual fog (as opposed to “fog of war”) or obstructions such as islands will obviously affect this.

## At what height is Earth’s curvature visible?

Visual daytime observations show that the minimum altitude at which curvature of the horizon can be detected is **at or slightly below 35,000 ft**, providing that the field of view is wide (60 degrees ) and nearly cloud free.

## Can you see all the way across Lake Michigan?

The distance from Warren Dunes state park is about 53 miles across the lake to Chicago. Someone that’s six feet tall standing on the lake shore can only see about three miles to the horizon. **If you climb to the top of Tower Hill (250ft) you can see almost 20 miles to the horizon**.

## How far can you see at 40000 feet?

At 35,000 Feet: You can see 228 miles from a height of 35,000 feet. At 40,000 Feet: You can see **244 miles** from a height of 40,000 feet.

## Can u see Chicago from Michigan?

Although rarely visible and quite tiny, it is a fascinating view. There is a scientific explanation to why **Chicago can appear to be visible from Michigan**. Mirage and Looming also explain why on occasion you can see more buildings and why they may look different sizes or shapes on different days.

## Can you see Chicago from South Haven?

**You’d have to go up about two-thirds of a mile (3,488 feet) in the air to see Chicago from South Haven**. Though you’d really be seeing whatever’s at the water level of Chicago at that point; you’d only have to elevate a few blocks before you could see the very top of the Sears Tower antennas (yeah, Willis, I said it).

## How far out to sea can you see?

At sea level the curvature of the earth limits the range of vision to **2.9 miles**. The formula for determining how many miles an individual can see at higher levels is the square root of his altitude times 1.225.

## How fast is the Earth spinning?

The earth rotates once every 23 hours, 56 minutes and 4.09053 seconds, called the sidereal period, and its circumference is roughly 40,075 kilometers. Thus, the surface of the earth at the equator moves at a speed of **460 meters per second**–or roughly 1,000 miles per hour.

## How far can you see to the horizon?

For a six-foot (182.88 centimeters) tall person, the horizon is **a little more than 3 miles (5 kilometers) away**. Geometry tells us that the distance of the horizon – i.e. the farthest point the eye can see before Earth curves out beneath our view – depends simply on the height of the observer.

## Can you see the curvature of the moon from its surface?

The Earth only curves away from you, **there is no curvature that can be seen across the horizon to the left and right** because it forms a circle around you that is always the same height relative to your eye (at least when you’re on a flat plane like you described).

## Can curvature be negative?

Now curvature takes place at a point, so **we can have positive, negative, and flat curvature on the same surface**. Picture, for instance, the surface of a doughnut (called a torus). If you think about it, the outside surface has a positive curvature and the part inside (the “hole”) has negative curvature.

## How do you calculate curvature?

- Step 1: Compute derivative. The first step to finding curvature is to take the derivative of our function, …
- Step 2: Normalize the derivative. …
- Step 3: Take the derivative of the unit tangent. …
- Step 4: Find the magnitude of this value. …
- Step 5: Divide this value by ∣ ∣ v ⃗ ′ ( t ) ∣ ∣ ||vec{textbf{v}}'(t)|| ∣∣v ′(t)∣∣

## Why do planes do not fly over the Pacific?

Flying over the Pacific Ocean is avoided by most airlines for most flights because **it usually doesn’t make sense to fly over it when shorter and safer routes exist**. The Pacific Ocean is also more remote and less safe than the Indian and Atlantic Oceans to fly over, resulting in a higher chance of a plane crashing.

## What happens if a plane goes too high?

If a passenger jet flies too high, **it reaches a point called ‘Coffin Corner’**. This is the point at which the aircraft’s low speed stall and high-speed buffet meet and the plane can no longer maintain its altitude which forces it to descend.

## How far can you see from 500 feet up?

Height (ft) | Height (m) | Distance (miles) |
---|---|---|

500 | 152.40 |
29.58 |

1000 | 304.80 | 32.41 |

2000 | 609.60 | 59.20 |

3000 | 914.40 | 72.50 |

## Can planes fly at 50000 feet?

The highest that a commercial airplane can fly is 45,000 feet. **Most military planes fly at around 50,000 feet and sometimes higher**. Some rocket-powered planes can fly as high as 100,000 feet but they are specially designed for this purpose.

## How far can the eye see?

A 6ft man standing and looking out to the horizon can see approximately 5km away, as the Earth’s surface curves out of sight. But our ability to see extends well beyond the horizon. It also depends on the amount of dust and pollution in the air, which usually limits normal vision to **less than 12 miles**.

## How far can you see before the earth curves?

Earth’s curvature

The Earth curves about **8 inches per mile**. As a result, on a flat surface with your eyes 5 feet or so off the ground, the farthest edge that you can see is about 3 miles away.

## Can you see Wisconsin from Michigan?

The rare phenomenon happens when light is “bent” because of temperature differences. LUDINGTON, Mich. — **It’s 60 miles that separate Ludington and Manitowoc, Wisconsin, yet both are visible in a picture**. Val Gorzynski snapped the Manitowoc skyline from his porch in Ludington, right off Lake Michigan.

## Can you see Michigan from Willis Tower?

The building has 4.5 million gross square feet (418,064 gross square meters) of floor space; or roughly 101 football fields. **On a clear day, you can see four states – Illinois, Indiana, Wisconsin and Michigan**. Visibility from the Skydeck is approximately 40-50 miles (65 – 80 kilometers).

## Can you see across Lake Superior?

It also spans west to the eastern edge of Minnesota. Lake Superior is the largest of the Great Lakes by surface area and volume. It is like a mini-freshwater ocean, **you can’t even see the other side from the Wisconsin shoreline**.

## Has anyone swam across Lake Michigan?

On Aug. 21, 1961, **Erikson became the first known person to swim across Lake Michigan**. He swam for more than 36 hours in stormy conditions, reaching Michigan City by way of McCormick Place.

## How deep is the Lake Michigan?

## What is the shortest distance across Lake Michigan?

We departed Frankfort at 0800, headed for Sturgeon Bay. Frankfort to Sturgeon Bay is the narrowest part of Lake Michigan when crossing it.

Navy Pier is a 3,300-foot-long (1,010 m) pier on the shoreline of **Lake Michigan**, located in the Streeterville neighborhood of the Near North Side community area in Chicago, Illinois, United States.

## How deep does the ocean go down?

The average depth of the ocean is about **3,688 meters (12,100 feet)**. The deepest part of the ocean is called the Challenger Deep and is located beneath the western Pacific Ocean in the southern end of the Mariana Trench, which runs several hundred kilometers southwest of the U.S. territorial island of Guam.

## What is the deepest part of Lake Superior?

## Does Lake Michigan freeze?

**Once Lake Michigan reaches below zero temperatures, it freezes over**, and through enough wave action, a solid sheet of ice is prevented from forming.

## Can you see 50 miles away?

The farthest point you can see is about 3 miles out. 6 miles: The average 747 passenger plane flies at about 6.6 miles up in the air. 50 miles: **On clear days, city buildings can be seen from 50 miles away** (if you’re standing on the ground).

## Where is the horizon in the sky?

In astronomy, the horizon is **the horizontal plane through the eyes of the observer**. It is the fundamental plane of the horizontal coordinate system, the locus of points that have an altitude of zero degrees.

## Can you see the horizon on the Moon?

The Moon is even smaller with a radius of only 1737.4 km, meaning on the moon, **the horizon is only 2.43 km away**. Take a closer look at those Apollo photographs from the surface of the Moon. You can actually see that. If you were standing on the Moon, you really would notice that it’s much smaller than Earth!

## How far can you see on the surface of the Moon?

The moon is two thousand, one hundred and sixty miles in diameter, only about one quarter the size of the earth. So the curvature at its surface is much more noticeable, and the horizon is much closer. It’s only about **1.5 miles** away.

## Why can you stand on the Moon but not Earth?

**The gravitational force on the moon is less than on Earth, because the strength of gravity is determined by an objects’ mass**. The bigger the object, the bigger the gravitational force. Gravity is pretty much everywhere.

## Is Earth moving closer to the Sun?

**We are not getting closer to the sun**, but scientists have shown that the distance between the sun and the Earth is changing. The sun shines by burning its own fuel, which causes it to slowly lose power, mass, and gravity. The sun’s weaker gravity as it loses mass causes the Earth to slowly move away from it.

## Is Earth rotating faster in 2021?

There hasn’t been a leap second added since 2016, and **our planet is currently spinning faster than it has in half a century**. Scientists aren’t sure why. “This lack of the need for leap seconds was not predicted,” Levine says.

## Why don’t we feel the Earth rotating?

But, for the most part, we don’t feel the Earth itself spinning because **we are held close to the Earth’s surface by gravity and the constant speed of rotation**. Our planet has been spinning for billions of years and will continue to spin for billions more. This is because nothing in space is stopping us.

## How far can the human eye see on a mountain?

Often, the curvature of the Earth gets in the way first. For example, at sea level, the horizon is only 4.8 kilometres (2.9 miles) away. On the top of Mt Everest, you could theoretically see for **339 kilometres (211 miles)**, but in practice clouds get in the way. For a truly unobstructed view, though, look up.

## How far can you see from a mountain?

Answers: Tower — 35.7 km, Airplane — 369 km, Space Shuttle — 1,919 km. In the real atmosphere, other factors limit the visibility of distant objects. From a tall building on a clear day, you can see mountains as far away as about **100 miles**.

## Does torus have curvature?

**The flat torus R2/Z2 has constant curvature equal to zero**. If you embed a torus in R3 than it has points of zero curvature. Every metric on a two-dimensional torus has a point of zero curvature.

## Do all circles have the same curvature?

The curvature of a circle is the reciprocal of its radius. For example if the radius is 5,the curvature is 1/5. So **different circles may have different curvatures based on their radii**. The smaller the radius, the larger the curvature.

## Why is the curvature of a cylinder zero?

Normal curvatures for a plane surface are all zero, and thus the Gaussian curvature of a plane is zero. **For a cylinder of radius r, the minimum normal curvature is zero (along the vertical straight lines), and the maximum is ^{1}/_{r} (along the horizontal circles)**. Thus, the Gaussian curvature of a cylinder is also zero.

## What does the curvature tell you?

The curvature measures **how fast a curve is changing direction at a given point**.

## Why is the curvature of a circle 1 R?

Title | curvature of a circle |
---|---|

Related topic | CircleOfCurvature |

## What is the curvature of a helix?

Arc length, curvature and torsion

A helix has **constant non-zero curvature** and torsion.

## What is a ghost flight?

The ghost flights, defined as **those with no passengers or less than 10% of passenger capacity**, operated from all 32 airports listed in the data.

## Can a plane fly over Mount Everest?

**The first men to fly over Mount Everest did so in an unpressurized biplane**. The two planes fly towards Lhotse and Everest at 32,000 feet. Though the 29,029-foot-high summit of Mount Everest was first conquered on foot by Tenzing Norgay and Edmund Hillary in 1953, it was conquered by air two decades earlier.

## Can a helicopter fly across the Atlantic?

**A helicopter can fly across the Atlantic** – and this has been achieved several times. The first transatlantic helicopter flight took place in 1952. The first non-stop transatlantic helicopter flight took place in 1967.

## What happens if a window breaks on an airplane?

Basically, the air pressure inside the cabin is higher than it is outside of the plane to enable the people onboard to breathe normally. That’s why, if a window happens to break, **the air inside would escape at high speeds, taking small objects like phones or magazines (or sometimes larger things, like people) with it**.

## Can a helicopter fly across the ocean?

**A military helicopter with inflight refueling capabilities in theory can cross any ocean in the world** as the biggest limiting factor is fuel. On long flights over an ocean, oil consumption can also begin to become an issue. These are two of the biggest factors that impede most helicopters from long oceanic flights.

## What happens if a plane gets struck by lightning?

When an airplane is hit, **the pilot will determine whether it’s safe for the flight to continue**. If not, the plane will divert to inspect the aircraft for damage and make repairs if necessary.

## How high can a 777 fly?

The Boeing 777 can fly as high as **43,100 feet**. However, its normal cruising altitude is usually around 35,000-39,000 feet.