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Greek scholar and philosopher Eratosthenes (276 BC - 195 BC) figured out that the length of the shadow at exactly noon, drawn from a stick of a certain length, stuck in the ground in Aswan, Egypt, was of a different length than the shadow at exactly noon, drawn from a similar stick in Alexandria, Egypt. From this, the circumference of the Earth was calculated, and the diameter and radius soon followed.
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What is Venus' radius as compared to the Earth's?
It is about 0.949 times Earth's radius.
How does Venus compare with the earth radius and mass?
Venus' radius = 0.95 of Earth's Venus' mass = 0.815 of Earth's
Which is smaller titanium or zirconium?
Do you think at atomic radius ? Zr calculated atomic radius: 206 pm, Hf calculated atomic radius: 208 pm. Or atomic mass? Zr: 91,224, Hf: 178,49.
What metal had the atomic radius of 238 pm?
Samarium has a calculated atomic radius of 238 pm.
What is the radius of an atom in picometers?
Scandium empirical atom radius: 160 pm Scandium calculated atom radius: 184 pm
How was the radius of the Earth obtained or calculated?
W.
Which of the rare earth metals is the smallest?
The smallest calculated atomic radius is for lutetium - 217 pm.
How do you get a radius of a circumference?
The circumference of a circle is calculated by multiplying the radius by 2xPI PI is approximately 3.141 This means the radius can be calculated by dividing the circumference by 2xPI
What is the relation between mass of earth and its radius?
For any object, the mass is the product of its volume and its density. In the case of Earth, that would be the averagedensity. The volume, of course, can be calculated on the basis of its radius. Use the formula for a sphere; that's close enough for most purposes.
What is Venus' radius as compared to the Earth's?
It is about 0.949 times Earth's radius.
How do you atomic radius of an element?
The atomic radius is calculated by spctroscopic or X-ray methods.
Who invent radius of earth?
If you are a believer, then God did but if you are not, then nobody did. The radius of the earth existed and therefore ots radius did before there was any form of life on earth to invent it.
The MA of a wheel and axle can be calculated by the ratio of the radius of the wheel to the radius of the axle. If an axle has a radius of 2 in and the wheel has a radius of 6 in what is the MA of the?
3
How does Venus compare with the earth radius and mass?
Venus' radius = 0.95 of Earth's Venus' mass = 0.815 of Earth's
What is Europa's diameter compared to earth?
Europa: 1561 km radius Earth: 6371 km radius The diameter is twice the radius.
Which is smaller titanium or zirconium?
Do you think at atomic radius ? Zr calculated atomic radius: 206 pm, Hf calculated atomic radius: 208 pm. Or atomic mass? Zr: 91,224, Hf: 178,49.
What metal had the atomic radius of 238 pm?
Samarium has a calculated atomic radius of 238 pm.
