How exactly is someone elses chrony 'calibrated correctly'
By firing a projectile of known velocity over it? then how is the 'known' velocity 'known'?? by being shot over a calibrated chrony??...
Type: Posts; User: Spanners
How exactly is someone elses chrony 'calibrated correctly'
By firing a projectile of known velocity over it? then how is the 'known' velocity 'known'?? by being shot over a calibrated chrony??...