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# Earth circumference

### Circumference of the Earth - Universe Toda

The circumference of the Earth in kilometers is 40,075 km, and the circumference of the Earth in miles is 24,901. In other words, if you could drive your car around the equator of the Earth (yes. The circumference of the Earth is 40,075 km, and the Greek geographer Erastosthenes was the first person to estimate the Earth's circumference nearly accurately. Before Erastosthenes, other scholars had attempted to estimate the figure, but their methods were not recorded, and their estimations were far from accurate Radius, diameter and circumference. The radius of Earth at the equator is 3,963 miles (6,378 kilometers), according to NASA's Goddard Space Flight Center.However, Earth is not quite a sphere But how to come up from this fact for calculating the circumference of the Earth? Eratosthenes thought the following way. Well, the difference in angle between these two cities is equal to 7.12°,.

You can figure out the earth's circumference using a geometric formula that's over 2,000 years old! Contrary to popular belief, Christopher Columbus did not discover that the Earth is round. Eratosthenes (276-194 B.C.) made that discovery about 1,700 years before Columbus. Eratosthenes was the head librarian in Alexandria, Egypt, the center of learning in the [ By The Numbers Earth's Size Volume: 6.73 x 10 11 cubic miles (1.083 x 10 12 km 3); Radius: 3,959 miles (6,371 km) Diameter: 7,918 miles (12,742 km) Surface Area: 1.97 x10 8 square miles (5.1 x 10 8 km 2); Mass: 5.972 x 10 24 k Earth is the third planet from the Sun and the only astronomical object known to harbor life.About 29% of Earth's surface is land consisting of continents and islands.The remaining 71% is covered with water, mostly by oceans but also lakes, rivers and other fresh water, which together constitute the hydrosphere.Much of Earth's polar regions are covered in ice Circumference to diameter. You have probably noticed that, since diameter is twice the radius, the proportion between the circumference and the diameter is equal to π: C/D = 2πR / 2R = π. This proportion (circumference to diameter) is the definition of the constant pi. It is used in many areas, such as physics and mathematics ### What Is The Circumference Of The Earth? - WorldAtla

• Finland has 314 000 kilometres of coastline, which is about eight times the earth's circumference. expand_more Finland har 314 000 km strandlinje, det vill säga lika mycket som åtta gånger jordens omkrets
• In 200 B.C. Eratosthenes estimated Earth's circumference at about 46,250 kilometers (28,735 miles). Today we know our planet's circumference is roughly 40,000 kilometers (24,850 miles)
• Google Earth is the most photorealistic, digital version of our planet. Where do the images come from? How are they they put together? And how often are they updated

The Earth's radius (r) is 6371 km or 3959 miles, based on numbers from Wikipedia, which gives a circumference (c)of c = 2 * π * r = 40 030 km. We wish to find the height (h) which is the drop in curvature over the distance (d). Using the circumference we find that 1 kilometer has the angle 360° / 40 030 km = 0.009° Earth takes up only a small portion of the sun's circumference. [insert drawing of tiny earth and big sun at opposite sides of screen, showing parallel sun rays striking earth] That means the sun's rays hitting Eratosthenes' home in Alexandria are parallel to the sun's rays hitting Syene, a town far to the south, which today we call Aswan However, the Earth is not quite a perfect circle, and if you measure through the poles, the circumference is a bit shorter—24,859.82 miles. The Earth is a bit wider than it is tall, giving it a slight bulge at the equator; this shape is known as an ellipsoid, or, more properly, a geoid In the mid-20th century we began launching satellites into space that would help us determine the exact circumference of the Earth: 40,030 km. But over 2000. So in other words, 5000 stades along the circumference of the Earth was equal to 7.2 degrees of arc along the circumference of the Earth. And because 7.2 degrees is equal to 1/50th of a full sphere (360/7.2 = 50), he was able to do the simple calculation of 5000 stadia multiplied by 50 to estimate the value of the circumference of the Earth

The equatorial circumference of the Earth is 40,075 km. This is the distance around the equator of the Earth. If you measure the circumference of the Earth, while passing through the poles, the. I read about how Eratosthenes calculated the circumference of the Earth and I knew that I had to try it myself. By just holding up a yardstick at solar noon.

The earth has a circumference of approximately 24,900 miles. More precisely the circumference of the earth at the equator is 24,902 mi / 40,076 km. -----How fast would you have to travel to see the sun set twice, or outrun the shadow of the setting sun? Since. Bibliography. SIT, 2004a. Estimate the Circumference of the Earth Using Eratosthenes' Method, Stevens Institute of Technology, Center for Innovation in Engineering & Science Education. Retrieved November 3, 2006. SIT, 2004b. Measuring the Circumference of the Earth: The Noon Day Project: Project Data, Stevens Institute of Technology, Center for Innovation in Engineering & Science Education The circumference of Venus is very nearly the same as the Earth's. The Earth has a circumference of about 40,000 km while Venus has 38,000 km, making Venus' circumference about 95% the.

In 240 B.C., the Greek astronomer Eratosthenes made the first good measurement of the size of Earth.By noting the angles of shadows in two cities on the Summer Solstice, and by performing the right calculations using his knowledge of geometry and the distance between the cities, Eratosthenes was able to make a remarkably accurate calculation of the circumference of Earth Find local businesses, view maps and get driving directions in Google Maps Circumference of the earth = 40055.48 km, which is 99.95% accurate. Radius = 6375.02 km. This feels awesome even with the data that I have simulated. I would actually like to do it with some friends soon and try something challenging like finding the longitude too The actual circumference of the Earth is 40, 075 40,075 4 0, 0 7 5 km at the equator. Variation in Eratosthenes' estimates based on stade length. Regardless, he calculated the size of the earth to within an order of magnitude and possibly got very close. He also may have been lucky Cosmos - Eratosthenes calculates Earth's circumference. In the 3rd century BCE, Eratosthenes calculated the circumference of the Earth to high precision. Notes. On the summer solstice at local noon on the Tropic of Cancer, the Sun would appear at the zenith, directly overhead (sun elevation of 90°)

### How Big Is Earth? - Radius, Diameter and Circumference

1. Circumference definition is - the perimeter of a circle. How to use circumference in a sentence. Did You Know
2. ing how to calculate the size of the Earth, Eratosthenes became aware of a well in Syene (modern-day Aswan, Egypt) where the sun illu
3. Measuring the circumference of the Earth by GPS. Northern position P2: latitude Φ2 = 51° 36.795' N (7° 57.468' E): Southern position P1: latitude Φ1 = 51° 36.784' N (7° 57.467' E): Eratosthenes (276 BC - 195 BC) was the first person to calculate the circumference of the Earth
4. earth circumference. Extended Keyboard; Upload; Examples; Random; Compute answers using Wolfram's breakthrough technology & knowledgebase, relied on by millions of students & professionals. For math, science.
5. Depends where you measure it. The circumference of Earth around the equator is about 24,874 miles (40,030 km), but from pole-to-pole, the Earth is just 24,860 miles (40,008 km) Here's a graphic I made showing the diameter of the earth to illustrat..

Circumference of the earth. The Greek mathematician Eratosthenes(ca. 276-195 B.C.) measured the circumference of the earth from the following observation. He noticed that on a certain day the sun shone directly down a deep well in Syene (modern Aswan). At the same time in Alexandria 500 miles.. Well, 7 degrees means about 50th part of the entire Earth's circumference, 360 degrees. Eratosthenes knew that a camel caravan would take 50 days to arrive from Alexandria to Syene, crossing 100 stadia a day. So the distance from Alexandria to Syene is 5000 stadium, which gives a circumference of Earth of 250,000 stadia Tag: earth-circumference. Al-Biruni's Method to Determine the Radius of the Earth. In the 11th century, Al-Biruni successfully determined the radius of the Earth by measuring the dip of the horizon from the top of a hill. In the 21st century, we can easily repeat the same experiment with practically no effort Eratosthenes' method to calculate the Earth's circumference has been lost; what has been preserved is the simplified version described by Cleomedes to popularise the discovery. Cleomedes invites his reader to consider two Egyptian cities, Alexandria and Syene, modern Aswan: Cleomedes assumes that the distance between Syene and Alexandria was 5,000 stadia (a figure that was checked yearly by.

Earth isn't a perfect sphere, but is oblate at its poles, due to its rotation. Therefore, the Earth radius isn't constant, but it can be calculated for every location. For this calculation, the longitude isn't needed. Mathematically, Earth is a spheroid. Earth radius at sea level is 6378.137 km (3963.191 mi) at the equator While Earth is only the fifth largest planet in the solar system, it is the only world in our solar system with liquid water on the surface. Just slightly larger than nearby Venus, Earth is the biggest of the four planets closest to the Sun, all of which are made of rock and metal

Eratosthenes was able to calculate the circumference of the Earth to be 250,000 stadia. The length of one stadia is not exactly known, but it is thought to be between 515 and 686 feet. This corresponds to a circumference of between 24,384 and 32,481 miles, but it is likely that he calculated a value of about 25,000 miles Illustration: Alamy How Aryabhata got the earth's circumference right 14 min read. Updated: 15 Feb 2018, 05:45 PM IST Vyasa Shastry. Unravelling the mystery behind the ancient mathematician.

### How Eratosthenes Calculated the Circumference of The Earth

Given this information, what is the circumference of the Earth? Get out a piece of paper and a calculator and see if you can work it out on your own. Again, we know that C = πd, and that the diameter of the earth is 12,742km. Using this information we can calculate the circumference of the Earth as C = π x 12,742km = 40,030km Earth's circumference is the distance around the Earth; around the poles it measures almost exactly 40,000 kilometres or 21,600 nautical miles due to the circumference being used to define those units of measurement. Earth's circumference - WikiMili, The Free Encyclopedia - WikiMili, The Free Encyc Eratosthenes Calculation of the Circumference of the Earth . Eratosthenes Method . Date of Estimate Circa 240 B.C. Set Up and Observations. Observations were made at local noon on the summer solstice, the longest day when the Sun was at its zenith and directly above the Tropic of Cancer

### By the Numbers Earth - NASA Solar System Exploratio

KS3 and GCSE, circles (circumference formula) activity. Real life application of circumference of a circle formula to work out the circumference of the Earth using altitude, speed and orbital time of the International Space Station The earth has a circumference of approximately 24,900 miles. More precisely the circumference of the earth. at the equator is 24,902 mi / 40,076 km. 0 0. Taz4me6. 1 decade ago. The average radius of the Earth is 3,959 miles (6,374 kilometers) Earth Curve Calculator. This app calculates how much a distant object is obscured by the earth's curvature, and makes the following assumptions: the earth is a convex sphere of radius 6371 kilometres; light travels in straight lines; The source code and calculation method are available on GitHub.com New Delhi: An Indian origin man from Ireland has claimed that he walked a distance equal to the Earth's circumference — 40,070 km — in less than four years, without leaving his immediate neighbourhood in the city of Limerick. Vinod Bajaj, a 70-year-old retired business consultant, began his long daily walks on 18 August 2016 and completed 40,107 km in 1,496 days later on 21 September. Get all the latest news and updates on Earth Circumference only on News18.com. Read all news including political news, current affairs and news headlines online on Earth Circumference today

The circumference of the earth at the equator is 24,901.55 miles (40,075.16 kilometers) The Earth's Circumference Education is what remains after one has forgotten everything he learned in school - Albert Einstein ( 1879 - 1955 ) The earliest Greek philosophers and mathematicians considered the sphere to be among the most perfect of all geometric figures Eratosthenes was a Greek astronomer, mathematician, poet and geographer, he was born in 276BC in the Greek colony of Cyrene, Libya. He was the third chief librarian of the great library of Alexandria, where he lived and studied for most of his life. He is the first person in history to have calculated the circumference of the Earth ### Earth - Wikipedi

1. Arhitektūras un interjera apgaismojuma projektēšanas birojs un eiropas vadošo apgaismojuma ražotāju oficiālie pārstāvji Latvijā
2. Modern replication of Eratosthenes' measurement of the circumference of Earth View the table of contents for this issue, or go to the journal homepage for more 2015 Phys. Educ. 50 17
3. Many translated example sentences containing earth circumference - French-English dictionary and search engine for French translations
4. In 'How to Measure the Earth's circumference' Michael Baizerman mentions the modern equatorial measure in conjunction with the meridian degree length. Confusing. The Greek methodologies invariably were conducted in a north/sout

### Circumference Calculato

The circumference of the Earth around the poles is now measured at around 40,008 km. Eratosthenes result is not bad at all. Very interesting is that the measurement of the distance between Alexandria and Syene is based on the estimated average speed of a caravan of camels that traveled this distance(!) The author is a resilient graduate in electrical engineering, and an aspiring professional in the said area. Abū Rayḥān Al-Bīrūnī, a pioneering Muslim scientist figured out a truly remarkable and ingenious method to calculate the radius of the earth (and subsequently its circumference).This method was very simple yet accurate, requiring just four measurements in all to be taken and then.

You can also measure the size of polygons that you draw in Google Earth. Notes: Measurements may not be 100% accurate, especially in areas with 3D terrain and buildings. For best results, measure using a top-down view. Measurements don't account for changes in elevation. These instructions only apply to the new Google Earth His application with the Guinness World Record is currently under process as they assess if his walk covering the equivalent of the Earth's circumference in 1,496 days and 54,633,135 steps makes.

Check out our earth circumference selection for the very best in unique or custom, handmade pieces from our shops Open Google Earth Pro. On the left, under Places, you will see a list of saved measurements. Check the measurement you want to open. Double click the name of the measurement. Earth will show your measurement on the map. To see measurement details, hover over the shape and right-click.Then, click Properties (Windows) or Get Info (Mac)

### CIRCUMFERENCE - svensk översättning - bab

2. Earth, our home, is the third planet from the sun. It's the only planet known to have an atmosphere containing free oxygen, oceans of water on its surface and, of course, life
3. Planet Earth has an abundance of water that makes it unique and perfect for life to exist
4. Speculation about the Earth's size ranged from guesses to more mathematically correct estimations. Plato took a guess at Earth's circumference at 62,800-74,000 kilometers (or 39,250-46,250 miles) while Archimedes was closer with a guess of 55,500 kilometers, or 34,687 miles
5. Most of the answers here are of course correct. However rather than just being told what the circumference of the earth is, which is really easy to find out, it's actually possible to calculate roughly yourself with a practical experiment, though you do need a number of specific conditions
6. The three primary characteristics of a circle are its circumference, diameter and radius. All circles share common properties that allow for formulas that relate these characteristics to one another. For example, the famous number pi (approximately 3.14, or a bit more precisely, 3.14156) is the ratio of a circle's circumference to its diameter, and this ratio holds true for all circles

Why Earth Circumference =40080 km? Let's summarize the story in following: -Earth daily motion is Energy (2.58 million km), Earth does it daily -On the first day, Earth sent her daily motion energy (2.58mkm) toward the moon orbit on the horizontal axis Activity: Claim Testing - Geology and the Earth's Formation. Principles of Geology. Activity: Lesson 4.3 DQ notebook. Practice: Quiz: Our Solar System and Earth. Next lesson. Glossary Eratosthenes of Cyrene (c. 276 BCE-192 or 194 BCE) was an ancient Greek mathematician, poet, and astronomer who is known as the father of geography.Eratosthenes was the first person to use the word geography and other geographical terms that are still in use today, and his efforts to calculate the circumference of the Earth and the distance from the Earth to the Sun paved the way for our. To calculate the circumference of the Earth, Eratosthenes measured the angle of the shadow to the Earth. He had had previously determined that on June 21, the date of the summer solstice, the Sun cast no shadow at the bottom of a water well located in Cyrene (also spelled Gyrene)

### Measure Earth's Circumference with a Shadow - Scientific

<p>The difference is caused by the flattening of the poles, such that the Earth has an oblate spheroidal shape. </p> <p>Earth's surface area is an estimated 510 km2, and about 29% of the area is land while the other 71% consists of water. The most distant point from the Earth's center is the Chimaborazo Mountain in Ecuador at 6, 267 meters (20,561 feet). Like us on Facebook: https://www. circumference of earth. Extended Keyboard; Upload; Examples; Random; Compute answers using Wolfram's breakthrough technology & knowledgebase, relied on by millions of students & professionals. For math, science, nutrition.

Eratosthenes' Calculation of Earth's Circumference. The first person to measure the size of the earth was Eratosthenes, an ancient Greek scientist, about 2,000 years ago. Eratosthenes lived in the city of Alexandria, near the mouth of the Nile River by the Mediterranean coast, in northern Egypt Circumference of the Earth The place of the world around supports is relatively less in comparison to that from equator. This is because of the spinning rate of world dark areas being throw by Sun which the external primary of world is not strong however fluid

The circumference of Earth at the equator is about 24,902 miles (40,075 km), but from pole-to-pole — the meridional circumference — Earth is only 24,860 miles (40,008 km) around. This shape, caused by the flattening at the poles, is called an oblate spheroid Today I found out about a man who fairly accurately estimated the circumference of the Earth well over 2,000 years ago: Eratosthenes of Cyrene.. Born around 276 B.C. in Cyrene, Libya, Eratosthenes soon became one of the most famous mathematicians of his time. He is best known for making the first recorded measurement of the Earth's circumference, which was also remarkably accurate Earth Mean Orbital Elements (J2000) Semimajor axis (AU) 1.00000011 Orbital eccentricity 0.01671022 Orbital inclination (deg) 0.00005 Longitude of ascending node (deg) -11.26064 Longitude of perihelion (deg) 102.94719 Mean Longitude (deg) 100.4643 In calculating the circumference of the earth along this latitude it has to be assumed the earth is perfectly spherical and using the formula C =2πr, where C is the circumference and r the radius. At the equator, the diameter of the earth is rough..

Earth is the third planet from the Sun and is the largest of the terrestrial planets.The Earth is the only planet in our solar system not to be named after a Greek or Roman deity. The Earth was formed approximately 4.54 billion years ago and is the only known planet to support life Calculator for the equatorial circumferences of Sun, Moon, Earth and the planets in kilometers, miles and compared to each other. Celestial bodies are not spheres, but are oblate at their poles. Therefore, their circumference is the largest at the equator ### Earth Curvature Calculator - Calculate the curve you

The circumference of the earth at the equator is 24,901.55 miles (40,075.16 kilometers). But, if you measure the earth through the poles the circumference is a bit shorter - 24,859.82 miles (40,008 km). This the earth is a tad wider than it is tall, giving it a slight bulge at the equator Now, 7.2 is 1/50 of a full circle, which means that the distance between that two cities is 1/50 of the Earthâ€™s circumference. <br /><br />To get the size of the earth, he multiplied 5,000.

Solution for Circumference of the Earth The mean radius of the earth is 3,959 miles. Use thisvalue to find the circumference of the earth Earth deviates from spherical by about 0.3%, as characterized by flattening. In modern times, Earth's circumference has been used to define fundamental units of measurement of length: the nautical mile in the seventeenth century and the metre in the eighteenth A 70-year-old man from Limerick is seeking the Guinness World Record for walking the equivalent of the Earth's circumference in under 1500 days Measurement of Earth's circumference has been important to navigation since ancient times. The first known scientific measurement and calculation was first calculated by Eratosthenes, which he did by comparing altitudes of the mid-day sun at two places a known north-south distance apart.  In the Middle Ages, al-Biruni developed a way to perform the calculation from a single location and. If the Earth was flat, then at any given time we would all see the same stars, went further and managed to measure the Earth's circumference. He discovered that at noon in one Egyptian city,.

How to calculate the circumference of the Earth. Image Credit Flickr User psd Nine miles off the coast of County Kerry in the west of Ireland there are two small rocky islands peeking out. Solving for Earth's circumference gives: You can now find the Earth's diameter by using: Write up a description of how you carried out this project and include the data that you collected and your calculations How an ancient Greek mathematician calculated the Earth's circumference. In the mid-20th century, we began launching satellites into space that would help us determine the exact circumference of. what is the circumference of earth

Information about the position of the Sun, especially its altitude above the horizon can be used to determine the circumference of the Earth - an exercise that was done by Eratosthenes, a Greek Philosopher and Mathematician. Living about 2 000 years ago Eratosthenes was in charge of the Library at Alexandria Explain how shadow angle maps to angle around Earth centre. 19:30, 1 November 2016: 512 × 341 (49 KB) Cmglee: Use satellite photo instead of topo map, and add protractor. 00:34, 1 November 2016: 512 × 341 (48 KB) Cmglee: Outline shapes to work around thumbnail rendering bug losing gradient. 00:26, 1 November 2016: 512 × 341 (49 KB) Cmgle Our circumference calculator provides circumference of a circle by entering its radius. Use our circumference calculator to determine the area of a circle. For more help on the circumference of a circle, try our Circumference Lesson. Enter the radius of the circle: The circumference of this circle is: Other Calculator 70-year-old Vinod Bajaj, a retired business consultant from Ireland, claims to have walked a distance equal to the circumference of the Earth in less than 1,500 days

The circumference of the sphere is measured along a great circle on the sphere. Find the circumference of the Earth by finding the length of intercepted arc of a small central angle. Find two places on the surface of the Earth that lie on the same meridian (or close to it): meridians are halves of great circles Eratosthenes Got the Circumference of the Earth: Physicist Klaus Kohl proposes that Eratosthenes could have used compasses on a scaphe, which was an hemispherical sundial. The reasoning is the same, ie counting how many times the tilt angle fit the circumference, but Kohl did not realized that this can be built in a plane also Assuming the Earth is spherical and the Sun is very far, we can determine the circumference of the Earth (right picture). Assuming the Earth is flat and sunrays are not parallel, we can determine the distance to the Sun (left picture). Using the flat-Earth model, they concluded that the distance to the Sun is only 3000-5000 km (1850-3100 mi) A. the earth is curved; B. found the first estimate for the circumference of the Earth. The Earth is Spherical He measured the angle made by the pole and a line joining the tip of the shadow and the top of the pole (see Figure 1) and found the angle to be about 7 o Modern science tells us that the circumference of the earth about the equator is 24,902.4 mi. (40,076.5 km), and that the circumference about the poles is 24,860.2 mi. (40,008.6 km). Using data from the biblical books of Ezekiel and Revelation, we can easily arrive at a number between these two figures   If the earth is a stationary plane in the shape of a circle, with East and West being a direction circumnavigating the earth and North and South being a dire.. Circumference definition: The circumference of a circle, place, or round object is the distance around its edge . | Meaning, pronunciation, translations and example Circumference definition, the outer boundary, especially of a circular area; perimeter: the circumference of a circle. See more Earth is part of the eight planets and many thousands of small bodies that move around the Sun as its solar system.The Solar System is moving through the Orion Arm of the Milky Way galaxy now, and will be for about the next 10,000 years.. Earth is about 150,000,000 kilometres or 93,000,000 miles away from the Sun (this distance is called an Astronomical Unit) If one decides to choose some measurement of the Earth as a standard of length, circumference has one serious advantage: it is easier to measure directly. The Earth is not an exact sphere. And the meter was originally defined as 1/40,000 of Paris meridian (not of the equator, not of some other meridian). And this meridian was carefully measured The Earth is 24,860 miles around in circumference. How many times would you need to go around the Earth to equal the distance to the Sun? You have all the information you need above. Explain your work (how you made your calculations) and answer below, don't forget units

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