World's oldest axe found in Australia

Archaeologists revealed they have found a piece of a stone axe dated as 35,500 years old on sacred Aboriginal land in Australia, the oldest object of its type ever found.

Intrinsic properties—the secret lives of accelerometers

When different laboratories test the same accelerometer, such as the one in your smartphone, they often come up with very different values. There are several possible reasons: Perhaps the axes of the gimbal system used in ...

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