Website review: APOD: 2001 November 13 - A Gravity...
teknek discovered this in Astronomy
•5 reviews since Jun 2, 2007
astronomy
•apod.nasa.gov/apod/ap011113.html
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Reviews of this website
Kirro rated 11 months ago- The real question is: How big is this difference. Is it a difference of a pound or an ounce, or is it unnoticeable? I think all of us could have guessed that the gravitational field has some irregularities, after all, the density of the earth is far from consistent. But how much does this amount to? EDIT: After a bit of research, it can amount to about 0.5%. So for easy calculation, a 200 pound person could weigh a pound more or less depending on their location. Generally, gravity increases with latitude, so if you want to weigh less, go live on the equator. Elevation comes into consideration too, so live on the equator at the highest point you can find.
- challengeme rated 14 months ago
- This is super awesome...
- ASWIN rated 15 months ago
- in some places you will feel slightly heavier than others
- thufth rated 15 months ago
- From the page: "Is gravity the same over the surface of the Earth? No -- it turns out that in some places you will feel slightly heavier than others."
- TheCosmicGame rated 15 months ago
- Is gravity the same over the surface of the Earth? No -- it turns out that in some places you will feel slightly heavier than others. The above relief map shows in exaggerated highs and lows where the gravitational field of Earth is relatively strong and weak. A low spot can be seen just off the coast of India, while a relative high occurs in the South Pacific Ocean. The cause of these irregularities is unknown since present surface features do not appear dominant. Scientists hypothesize that factors that are more important lay in deep underground structures and may be related to the Earth's appearance in the distant past. To better map Earth's gravity and hence better understand its interior and past, NASA plans to launch the Gravity Recovery and Climate (GRACE) satellite in February.
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