She was shocked to discover that her pricey vacuum had been slacking. “I was surprised how much dirt and dog hair were in the tunnel as I thought the carpet wasn’t that dirty,” she says.

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Others noted that the vacuum was noisy and became clogged with pet hair, which our test findings also reflect. And while some users complained of the unit's weight, we advise our readers to try ...

The vacuum system uses an air ejector driven by the existing ... a fully developed turbulent pipe flow over a large range of Reynolds numbers. This wind tunnel is called the Princeton/DARPA-ONR ...

Before anything leaves ground though, these machines are tested in wind tunnels. [Scott Manley]’s video “How Hypersonic Wind Tunnels Recreate Mach 20” (embedded below) does a wonderful job ...

Typically, when we talk about wind tunnels, we think of the big facilities in use by the aerospace and motorsports industries. However, there’s nothing stopping you building a wind tunnel of ...

Wind tunnel testing services provide test facilities and technical staff for aerodynamic testing. Tests may be performed on prototype aircraft, helicopters, trains, cars, or buildings. Wind tunnel ...

Austrian aerial stuntman and all-around maniac Peter Salzmann has already pushed wingsuiting to a whole 'nother level in ...

B efore you write in, our Headphones of the Year Award is open to in-ear, on-ear and over-ear designs (rather than just cans) ...

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