How do you calculate how far I can see?

√2Rh = √41807040h = √41807040 5280 √h miles ≈ 1.22459 √h miles . For example, if our eye is 5 feet about sea level, then the horizon distance is about 1.22459√5=2.738 miles away.

How do you calculate the distance to the horizon?

If you’re standing on the shore, then you can also estimate the distance to the horizon by simply dividing your height in half. So if you’re 5’6″ (5.5 feet) tall, the distance to the horizon is only about 2.75 miles!

How far can you see from 100 feet up?

Height (ft) Height (m) Distance (miles)
70 21.34 11.07
80 24.38 11.83
90 27.43 12.25
100 30.48 12.23

How far can you see from height?

The formula for determining how many miles an individual can see at higher levels is the square root of his altitude times 1.225. Thus on a clear day at 1,000 feet a person with normal vision can see 39 miles; at 10,000 feet, 123 miles; at 25,000 feet, 194 miles.

How far away can you see a ship at sea?

How far can a person see across the ocean? Boat captains say, on average, you can see ships on the horizon or land at about 12 miles. Examples: For an observer standing on the ground with h = 1.70 metres (5 ft 7 in) (average eye-level height), the horizon is at a distance of 4.7 kilometres (2.9 mi).

How far out can you see that is how far is your horizon the Earth’s radius is about 6400 km?

about 51 kilometers
So d, after you take the square root of both sides, is square root of 2 times 6400 kilometers— radius of the Earth— times 0.200 kilometers—distance above the Earth— plus the 0.200 kilometer squared and square root that whole result and you get about 51 kilometers is the distance to the horizon.

How far can you see at 40000 feet?

So, at 10,000 feet you can see 122 miles, at 30,000 feet you can see 211 miles, and at 40,000 feet you can see 244 miles.

How many miles can you see on a clear day?

(Image credit: NOAA.) On a clear day, you can see for miles and miles and miles. The old saying turns out to be just about true. For a six-foot (182.88 centimeters) tall person, the horizon is a little more than 3 miles (5 kilometers) away.

How far can you see from 35000 feet?

How far can you see at 35,000 ft? – Quora. If it’s a clear dark night and you look towards the Andromeda galaxy, and see its fuzzy light, that is 2.5 million light years. If you are in an airplane at 35,000 ft, that is 10,668 m (35,000 ft / 3.28 ft/m = 10,668 m).

Why do planes do not fly over the Pacific?

The primary reason airplanes don’t fly over the Pacific Ocean is because curved routes are shorter than straight routes. Flat maps are somewhat confusing because the Earth itself isn’t flat. Rather, it’s spherical. As a result, straight routes don’t offer the shortest distance between two locations.

Can you see a plane flying at 30 000 feet?

Here is the theoretical distance you can see from a plane at different altitudes, given perfect weather conditions: at 1000 feet: 38.7 Miles (62km) … at 30,000 feet: 211.3 miles (340 km) at 39,000 feet: 235 miles (391 km)

Why do planes fly at 37000 feet?

The biggest reason for this altitude lies with fuel efficiency. The thin air creates less drag on the aircraft, which means the plane can use less fuel in order to maintain speed.

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.

Why do planes fly at 35000 feet?

Due to lower resistance at higher altitudes, commercial airplanes can keep moving forward with minimal fuel expenditure. … A balance between operating costs and fuel efficiency is achieved somewhere around 35,000 feet, which is why commercial airplanes usually fly at that altitude.

Can planes fly over Mount Everest?

Tim Morgan, a commercial pilot writing for Quora says aircraft can fly above 40,000 feet, and hence it is possible to fly over Mount Everest which stands at 29,031.69 feet. … Aircraft come with 20 minutes of oxygen. If a plane loses cabin pressure, the flights have to descend to an altitude with breathable oxygen.

Can a private jet cross the Pacific?

Only the largest private jets – usually converted commercial airliners – can cross the Pacific Ocean, and even then there are limits. There are no typical flight paths that directly cross the ocean, owing to its size and expanse, and many follow the ‘Great Circle’ to cross the ocean.

Can you land a plane if the engine fails?

Airplanes Can Glide After Engine Failure

Even if some or all of an airplane’s engines fail, it can still safely glide while descending in preparation of an emergency landing. An airplane won’t just drop to the ground after its engines fail. … Ideally, the pilot will land on a nearby landing.

What happens if a plane has an emergency over the ocean?

Q: Can most twin-engine commercial aircraft fly and maintain altitude on one engine in an emergency over oceans? A: Yes. … If the engine failure occurs at cruising altitude, the aircraft will descend to a lower altitude until the remaining engine has enough thrust to maintain level flight. This is known as drift down.

What jets can fly transatlantic?

Modern aircraft with two engines flying transatlantic (the most common models used for transatlantic service being the Airbus A330, Boeing 767, Boeing 777 and Boeing 787) have to be ETOPS certified.

Can a g5 cross the Atlantic?

Midsize aircraft are perfect for transatlantic flights. … Aircraft that suit this category are the Dassault Falcon 7X, Gulfstream G550 and Bombardier Global 5000.