Contents

- 1 How far can you see before the curve of the earth?
- 2 How far can you see from 1000 feet up?
- 3 Can you see earth curvature from Everest?
- 4 What is the farthest distance you can see if you have a normal eye?
- 5 Can you see 100 miles away?
- 6 How far can offshore see?
- 7 How far away is the horizon at sea?
- 8 How far can you see on Everest?
- 9 Can you see Everest from space?
- 10 Is minus 9 legally blind?
- 11 How far can a human walk in a day?
- 12 How much do our eyes really see?

## How far can you see before the curve of the earth?

Your visual curvature is limited to **about 5KM** (**3.3miles**) before the object you see on Earth will start appearing below the horizon.

## How far can you see from 1000 feet up?

If you are on a light house at 200 feet above the sea level the horizon is at a distance of 17.3 **statute miles**.

Tabel: **Distance** to Horizon (height in **feet** and **distance** in statute miles)

Height [feet] |
Distance Horizon [miles] |
---|---|

900 | 36,8 |

1000 |
38,7 |

2000 | 54,8 |

3000 | 67,1 |

## Can you see earth curvature from Everest?

**Earth’s curvature can**‘t be visually **seen** from any location on the ground, even from Mount **Everest**. Studies show that the threshold altitude for **seeing** the **curvature** is about 35,000 ft (10,668 m). Even then, it’s barely discernible and the observer must have a wide angle field of **view**.

## What is the farthest distance you can see if you have a normal eye?

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 100 miles away?

The Earth is round and **you** cannot **see 100 miles** out to sea from sea level. **If you** stand at the water’s edge and your eyes are 180 cm from the ground the horizon is about 4.8km or nearly 3 **miles away**. For the horizon to be **100 miles away** your eyes **would** have to be 1878 metres above the ground.

## How far can offshore see?

The correct answer is about **3 miles** if your eye is about a foot above the ocean. However, most sea captains will tell you that you can see a ship approaching at **12 miles**. This is why International Waters are set to **12 miles** offshore.

## How far away is the horizon at sea?

For an observer standing on the ground with h = 2 **metres** (6 **ft** 7 in), the horizon is at a distance of 5 **kilometres** (**3.1 mi**). For an observer standing on a hill or tower 30 **metres** (98 **ft**) above sea level, the horizon is at a distance of 19.6 **kilometres** (**12.2 mi**).

## How far can you see on Everest?

On Mount **Everest**, an observer sees the horizon roughly 230 miles away. The Earth should curve 35,000 feet.

## Can you see Everest from space?

**One** under-appreciated **space** asset is the photography skills of the Russian cosmonauts on board the International **Space** Station. **They** are extremely skillful photographers who don’t get the same recognition as their astronaut counterparts in their Earth observation skills.

## Is minus 9 legally blind?

**Legal blindness** means that your visual acuity is worse than 20/200 or a visual field that is less than 20 degrees even with the best possible correction. Simply put, if your prescription is -2.5 or lower, this means that you are **legally blind**. Visual acuity of -2.5 is equivalent to 20/200 vision.

## How far can a human walk in a day?

While your body is made for walking, the distance you can achieve at an average walking pace of **3.1 miles** per hour depends on whether you have trained for it or not. A trained walker can walk a 26.2-**mile** marathon in eight hours or less, or walk 20 to **30 miles** in a day.

## How much do our eyes really see?

Some experts will tell you that the human **eye** can **see** between 30 and 60 frames per second. Some maintain that it’s not **really** possible for the human **eye** to perceive more than 60 frames per second.