Researchers help give the kilogram a fundamental equivalent

Kilogram redefined

Much to the consternation of scientists, the cylindrical platinum-iridium artifacts that represent the kilogram (see image above) have been gradually packing on extra weight due to surface contamination. Since that unit of measure is the last to be based on an artifact and not a physical constant of nature -- for instance, a meter is the distance light travels in a vacuum during 1/299,792,458 of a second -- it means that scientists no longer know exactly how much a kilogram is. That makes experiments requiring extreme precision more difficult, so researchers from Mettler Toledo, CERN and the EPFL have been working for the last 15 years on a so-called Watt balance, which works on the principle of electromagnetic force restoration. The team managed to created a "load cell" that's accurate to a 0.3 µg resolution for a 2kg weight, well below the desired level of 1 µg -- meaning the goal of replacing a hunk of metal from 1878 with something more, ahem, solid is within reach by the 2015 target date.

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Source: Mettler Toledo

Fanatec’s Clubsport pedals V2 bring improved brake and clutch feel to the virtual speedway (video)

Fanatec's Clubsport pedals V2 bring improved brake and clutch feel to the virtual speedway (video)

Around these parts, we're generally suckers for all things related to racing simulators. As such, we're excited to learn that Fanatec has unveiled its next generation of the Clubsport pedals that we reviewed over a year ago. Dubbed as the Clubsport pedals V2, the company refers to the peripheral as an "evolutionary" update to original, offering a trio of improvements. The clutch has been retooled to have a "regressive feel" that's said to be similar to a real automobile, while the brake is now of the hydraulic variety, featuring user replaceable synthetic oil -- naturally, it still has an adjustable spring and load cell pressure sensor for the utmost customizability. The final touch is merely some visual spice in the way of black anodization. Notably, there won't be any tuning kit available initially, and V1 owners might be disappointed to know that the company has opted not to offer an upgrade kit, citing costs and potentially complicated installation. Fanatec is aiming to have the Clubsport pedals V2 out by June, bundled alongside its Clubsport wheel, with pricing set at $250 for the US (€250 in the UK). Pre-orders won't begin until May, so in the meantime, shift over to the source link below and the video past the break for all the details.

Continue reading Fanatec's Clubsport pedals V2 bring improved brake and clutch feel to the virtual speedway (video)

Fanatec's Clubsport pedals V2 bring improved brake and clutch feel to the virtual speedway (video) originally appeared on Engadget on Fri, 27 Apr 2012 14:26:00 EDT. Please see our terms for use of feeds.

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