Breakthrough Starshot is an ambitious project that aims to use a superlaser to push a tiny craft up to 0.2 c(adsbygoogle = window.adsbygoogle || []).push({});

https://en.wikipedia.org/wiki/Breakthrough_Starshot

At such speeds, it would be possible to perform a macroscopic test of the longitudinal acceleration, provided the craft has an accelerometer on itself.

##a=\frac{F}{γ^3m}##

The faster the craft, the less its acceleration. At 0.2 c, the difference is about 6%, small but very large by relativistic standards.

Maybe we're finally entering the era where relativistic effects will become extremely significant.

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# I 1st Macroscopic Test of Longitudinal Acceleration?

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