Picometre metrology in space

The Gaia mission will create an ultra-precise three-dimensional map of about one billion stars in our Galaxy. Part of ESA’s Cosmic Vision program, the Gaia spacecraft is being built by EADS Astrium and is scheduled for launch in 2011. TNO is developing a picometre metrology system– the Basic Angle Monitoring Opto-Mechanical Assembly (BAM OMA) – for this mission.

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References

Order of frictions and stiffnesses…

For lumped systems consisting of different frictions and stiffnesses, there has been confusion in literature about hysteresis curves and virtual play for many decades.

Make it clean

In mid-April, the second edition of the Manufacturing Technology Conference and the fifth edition of the Clean Event were held together, for the first time, at the Koningshof in Veldhoven (NL).

Bringing particles to light

Particle contamination monitoring and cleanliness control are fundamental to micromanufacturing processes across diverse industries to achieve cost-effective production of high-quality and reliable microscale devices and components.