Researchers studying decades of earthquake data say they have found the first evidence that, in addition to spinning backward ...

An electronic tachometer is a straightforward enough device, in which the light reflections from a white spot on a rotating object are detected and counted over time, measuring the revolutions per ...

A new, detailed probe of Earth's heart reveals that the rotating inner core doesn't just change in rotation speed – it also appears to change in shape, with subtle variations appearing in the way ...

The observed rotational speed of Earth is measured against what an atomic clock says is the length of the day. That produces a figure called Delta T, the difference between what we think the ...

If GPS satellites don’t take into account the Earth’s changing rotational speed, their positioning data can quickly become unusable. Earth’s slowdown will be welcome news for international ...

According to NASA's Benjamin Fong Chao, this redistribution of mass, though it results in only a very small effect (a delay of 0.06 microseconds in a day), is enough to alter the rotational speed ...

This phenomenon follows the principle of inertia: when mass moves farther from the Earth's center, rotational speed decreases, much like a figure skater slowing down by extending their arms.

Power grids operate like an intricate ballet of energy generation and consumption that must remain perfectly balanced at all times. The grid maintains a ...