FRANKFURT. Neutron stars, with a mass greater than that of the entire solar system confined within a nearly perfect sphere just a dozen kilometers in diameter, are among the most fascinating ...

[Willem Koopman aka Secretbatcave] was looking at a master clock he has in his collection which was quite a noisy device, but wanted to use the matching solenoid slave clock mechanism he had to hand.

Long before Apple, Garmin, Timex and Casio, Accutron invented the world’s first fully electronic watch. In 1960, Bulova’s subsidiary introduced the Spaceview with a Tuning Fork movement, which used a ...