Circa 2020 Brushless motors are awesome some can reach 50,000 rpm or higher they seem to be the next generation after brushed motors.

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Brushed or brushless motors? Which one would you choose and why?

Blink and you miss it! 🌏

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Planet Earth has recorded its shortest day since records began.

The 1.59 milliseconds shaved off the usual 24-hour spin on June 29 raises the prospect of a leap second having to occur to keep clocks aligned. This would be the first time global clocks have been sped up.

The Earth’s rotation has been known to slow down, with 27 leap seconds needed to keep atomic time accurate since the 1970s. The last was on New Year’s Eve 2016, when clocks paused for a second to allow the Earth to catch up.

Back in the 1970s, the Soviet Union began an ambitious project to drill down 15 km. Whilst they didn’t succeed, the Kole Superdeep Borehole is still the deepest vertical borehole in the world.

The Earth got hit by a mysterious solar tsunami 9,200 years ago!

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