Our Earth is flat or round or oval, if your answer is round or oval then what is your source of information. Is it NASA, hollywood movies? please mention your source. thank you.
Sir Kenneth M Towe i am actually want to know something about the dome structure theory of the heavens above the flat surface or structure theory of the planet earth.
Dear Asim,
If you leave the various (yet still very active) mythologies aside and stick to actual science, many people answered your question with an increasing level of details during the last 2600 years (for an overview, see https://en.wikipedia.org/wiki/Spherical_Earth). That said, the science behind what you call "structure theory of planet Earth" is usually named "Geodesy" (have a look here: https://en.wikipedia.org/wiki/Geodesy).
To go beyond Wikipedia, you may have a look at an english translation of a famous book by F. R. Helmert (german scientist) freely available here: https://zenodo.org/record/32050
Asim,
Two words: Eratosthenes method.
One can demonstrate the spherical nature of the world trivially with little more than two sticks, and trignometry.
Indeed Kenneth, that works well.
But I've heard all manner of absurd explanations - the most common being "Refraction!" - uttered by people with a very shaky grasp of what it is that they are referring to.
I sincerely hope that Mr Ullah is building a database to gauge the public understanding of science. Because the alternative is not something to gladden the heart.
I'm surprised Asim, that on this forum you limited the possibilities to three. Flat, round and oval.
Our scientific philosophers have a convincing argument that the dimensionality of our universe is potentially unlimited and the choice must be expanded to hyper-planes, hyperspheres, hyper-ovoids, hyper duo-decahedrons etc.
I can, with difficulty, see an argument for the earth as a zero dimensional point where your existence is the resultant of my awareness - or God's if you prefer that alternative.
http://www.viraltrendzz.com/man-launch-homemade-rocket-prove-earth-flat/
Please visit this link.
Sir, i have no clue for the flat structure, round or oval shape, i am actually gathering different views of the scientists about this phenomena
Dear Asim Ullah,
From my window, I have the grace of full Ocean view.
Freom my window, I have daily view of boats, aproaching the European coast, coming from the horizon lining. As I see them cross the horizon, I have daily proof of the ancient Renaissance theoretical demonstration that our planet is indeed spheroid. Not flat.
Earth is our home planet. Scientists believe Earth and its moon formed around the same time as the rest of the solar system. They think that was about 4.5 billion years ago. Earth is the fifth-largest planet in the solar system. Its diameter is about 8,000 miles. And Earth is the third-closest planet to the sun. Its average distance from the sun is about 93 million miles. Only Mercury and Venus are closer.
Earth has been called the "Goldilocks planet." In the story of "Goldilocks and the Three Bears," a little girl named Goldilocks liked everything just right. Her porridge couldn't be too hot or too cold. And her bed couldn't be too hard or too soft. On Earth, everything is just right for life to exist. It's warm, but not too warm. And it has water, but not too much water.
Earth is the only planet known to have large amounts of liquid water. Liquid water is essential for life. Earth is the only planet where life is known to exist.
What Does Earth Look Like? From space, Earth looks like a blue marble with white swirls and areas of brown, yellow, green and white. The blue is water, which covers about 71 percent of Earth's surface. The white swirls are clouds. The areas of brown, yellow and green are land. And the areas of white are ice and snow.
The equator is an imaginary circle that divides Earth into two halves. The northern half is called the Northern Hemisphere. The southern half is called the Southern Hemisphere. The northernmost point on Earth is called the North Pole. The southernmost point on Earth is called the South Pole.
How Do We Know Earth Is Round? Humans have known that Earth is round for more than 2,000 years! The ancient Greeks measured shadows during summer solstice and also calculated Earth's circumference. They used positions of stars and constellations to estimate distances on Earth. They could even see the planet's round shadow on the moon during a lunar eclipse. (We still can see this during lunar eclipses.)
Today, scientists use geodesy, which is the science of measuring Earth's shape, gravity and rotation. Geodesy provides accurate measurements that show Earth is round. With GPS and other satellites, scientists can measure Earth's size and shape to within a centimeter. Pictures from space also show Earth is round like the moon.
Even though our planet is a sphere, it is not a perfect sphere. Because of the force caused when Earth rotates, the North and South Poles are slightly flat. Earth's rotation, wobbly motion and other forces are making the planet change shape very slowly, but it is still round.
How Does Earth Move? Earth orbits the sun once every 365 days, or one year. The shape of its orbit is not quite a perfect circle. It's more like an oval, which causes Earth's distance from the sun to vary during the year. Earth is nearest the sun, or at "perihelion," in January when it's about 91 million miles away. Earth is farthest from the sun, or at "aphelion," in July when it's about 95 million miles away.
At the equator, Earth spins at just over 1,000 miles per hour. Earth makes a full spin around its axis once every 24 hours, or one day. The axis is an imaginary line through the center of the planet from the North Pole to the South Pole. Rather than straight up and down, Earth's axis is tilted at an angle of 23.5 degrees.
Why Do We Have Day and Night? At all times, half of Earth is lighted by the sun and half is in darkness. Areas facing toward the sun experience daytime. Areas facing away from the sun experience nighttime. As the planet spins, most places on Earth cycle through day and night once every 24 hours. The North Pole and South Pole have continuous daylight or darkness depending on the time of year.
Why Does Earth Have Seasons? Earth has seasons because its axis is tilted. Thus, the sun's rays hit different parts of the planet more directly depending on the time of year.
From June to August, the sun's rays hit the Northern Hemisphere more directly than the Southern Hemisphere. The result is warm (summer) weather in the Northern Hemisphere and cold (winter) weather in the Southern Hemisphere.
From December to February, the sun's rays hit the Northern Hemisphere less directly than the Southern Hemisphere. The result is cold (winter) weather in the Northern Hemisphere and warm (summer) weather in the Southern Hemisphere.
From September to November, the sun shines equally on both hemispheres. The result is fall in the Northern Hemisphere and spring in the Southern Hemisphere.
The sun also shines equally on both hemispheres from March to May. The result is spring in the Northern Hemisphere and fall in the Southern Hemisphere.
What Are Earth's Different Parts? Earth consists of land, air, water and life. The land contains mountains, valleys and flat areas. The air is made up of different gases, mainly nitrogen and oxygen. The water includes oceans, lakes, rivers, streams, rain, snow and ice. Life consists of people, animals and plants. There are millions of species, or kinds of life, on Earth. Their sizes range from very tiny to very large.
Below Earth's surface are layers of rock and metal. Temperatures increase with depth, all the way to about 12,000 degrees Fahrenheit at Earth's inner core.
Earth's parts once were seen as largely separate from each other. But now they are viewed together as the "Earth system." Each part connects to and affects each of the other parts. For example:
- Clouds in the air drop rain and snow on land.
- Water gives life to plants and animals.
- Volcanoes on land send gas and dust into the air.
- People breathe air and drink water.
Earth system science is the study of interactions between and among Earth's different parts.
Why and How Does NASA Study Earth? NASA studies Earth to learn about how the planet changes. Earth's parts - land, air, water and life - are always changing. Some of the changes are natural and some are caused by humans. Scientists want to understand how Earth has changed in the past and how it is changing now. This information helps them predict how Earth might change in the future.
NASA studies Earth using satellites. Satellites look toward Earth from space. They take pictures of, and collect information about, all of Earth's parts. NASA satellites are especially good for observing clouds, oceans, land and ice. They also measure gases in the atmosphere, such as ozone and carbon dioxide. They measure how much energy enters and leaves Earth's atmosphere. And they monitor wildfires, volcanoes and their smoke.
Information gathered by NASA satellites helps scientists predict weather and climate. It also helps public health officials track disease and famine. It helps farmers decide when to plant crops and what kinds to plant. And it helps emergency workers respond to natural disasters.
reference/https://www.nasa.gov/audience/forstudents/5-8/features/nasa-knows/what-is-earth-58.html
regards
Round from experimental studies with boats appearing from the horizon, from traditional stories and experimental work
Asim,
> Sir, i have no clue for the flat structure, round or oval shape,
I think that that is not correct.
You *do* have those clues.
Look at the full rising moon.
Now ask a friend, at a different latitude, to look at the same moon.
Note how you both see the same face, but that the orientation of the features are rotated between your two views.
I know no way of engineering such a situation with a flat world.
Furthermore, every observation made to date, on the surface of this world and above it, shows the spherical nature of our globe.
And you still have 'no clue'? How?
Why most voyages of the expediters are mostly towards and in North pole. why not the south pole?
5 proofs to justify our earth is not flat
check here
https://www.foehub.com/5-proofs-to-justify-our-earth-is-not-flat
My answer is science and research. So far I did not noticed that someone has developed effective calculations in astronomy, geodesy and navigation, without spherical trigonometry.
In short: a claim how Earth is flat is nothing else than a joke.
Kind regards, Anton
Dear Anton Vrdoljak ,
If the earth is flat a lot of your science and research cannot be trusted.
Because we then have been lied to for hundreds of years and the data we get today is perhaps from instruments made by those.
Today I read that the study of Geodesy(Geodasie) use GPS.
The United States government created the system, maintains it, and makes it freely accessible to anyone with a GPS receiver.
U.S. Department of Defense developed the system, which originally used 24 satellites.
It was initially developed for use by the United States military and became fully operational in 1995.
I want evidence we can do without external data.
Dear Solveig Løvhaug,
I am not navigator nor sailor, but can tell you how terrestrial navigation (modern or from middle age period) is based on spherical trigonometry.
Anyone who is not supporting this fact is free to develop his theory. As you said we will want to see some evidence, i.e., for example, all scientists & researchers will be curious to see the evidence for this simple task: Suppose the Earth is flat, let sail out from port Alexandria, and then sail into port Lisbon...
Kind regards,
Anton