The ground.
In order to see the curve of the Earth, you would need to be at an altitude of at least 35,000 feet, which is roughly the cruising altitude of commercial airplanes.
The distance at which you can see mountains from your current location depends on various factors such as the height of the mountains, weather conditions, and any obstructions in the landscape. Typically, mountains can be visible from a range of 100 miles or more on a clear day with no obstructions.
Rain: The condensed water vapor that first evaporated from the earths surface (see water cycle)
Mount Everest and Mount Apo are both significantly smaller in height compared to the actual size of Earth. Earth has a diameter of around 12,742 km, whereas Mount Everest's height is approximately 8.8 km and Mount Apo's height is around 3.1 km. So, they are quite small in comparison to the overall size of the planet.
Earth's atmosphere formed around 4.5 billion years ago, shortly after the planet's formation. The early atmosphere likely consisted of gases such as hydrogen and helium, but has since evolved through volcanic activity and the presence of living organisms to the composition we see today.
The minimum height of the mirror should be equal to the height of the man's eyes, which is half of his total height. Therefore, the minimum height of the mirror should be 0.7m.
A normal healthy eye can see almost an unlimited distance, normally vision is stopped by something in the line of sight like buildings, trees, the earths curve
You need to get to a sufficiently high altitude or distance from the Earth to being to see the curvature. A minimum heihgt of around 60 to 70,000 ft is required to be able the see the curvature of the horizon.
The minimum length of the mirror needed for the tall man to see his full image would be 6 feet. This is because the mirror needs to be at least the same height as the person in order to capture their full image.
The name of the curve is the "meniscus".
A blind curve is a dangerous curve on a roadway in which drivers cannot see approaching traffic.
The minimum height requirement for commercial pilots varies by country and regulatory authority. In the United States, the Federal Aviation Administration (FAA) does not specify a minimum height, but pilots must be able to reach all controls and see outside the cockpit. Other countries may have similar guidelines, focusing on the ability to safely operate the aircraft rather than a specific height. Ultimately, it's essential for aspiring pilots to check the regulations of the aviation authority in their jurisdiction.
The minimum length of a plane mirror needed to see a full-length image of yourself is half of your total height. This is because the mirror only needs to reflect the upper half of your body, and the image in the mirror will appear to be the same size as the actual object.
You can see the curveture of the earth from that height, you could tell that it was a sphere, but you wont be able to see it all in one go as it would fill your vision. It would be like looking at a basketball from less than an inch away.
you see a eclipse
buildings,landforms
The meniscus is the curve at the liquid's surface. It is produced in response to the surface of the container or another object.