Anechoic

41 ms·

361.
by Anechoic 12y ago
Nothing like hitting a pigeon or catching a flying bit of branch at 300MPH, hurricanes put 2 x 4s through houses 2/3rds that speed so that would be a challenge. At 250 mph, the TransRapid TR-08 simply vaporized any biological object
362.
by Anechoic 12y ago
Don't be. We knew the risks, the training staff and facilities are good, we set our priorities and we had fun. Edit: the comment I was responding to said something like "it makes me sad there are people at MIT smashing their heads
363.
by Anechoic 12y ago
It's not surprising that a device around a mobile device can produce decent results. The Bruel and Kjaer 2250 [0] and 2270 sound meters (probably considered to be the highest-end sound meter on the market) is built around Windows CE. T
364.
by Anechoic 12y ago
I think you're looking at it.
365.
by Anechoic 12y ago
http://www.masslive.com/news/index.ssf/2014/01/springfield_p...
366.
by Anechoic 12y ago
Yep :)
367.
by Anechoic 12y ago
I doubt any of the companies are willing partners in PRISM AFAICT that was xenadu02's point - that data from Apple et al are being collect by PRISM, but Apple is not a "partner" in the sense that "partner" implies
368.
by Anechoic 12y ago
That link doesn't contradict xenadu02's claim. Do you have a link that better spells out that Apple is a willing partner in PRISM?
369.
by Anechoic 12y ago
Bought at $16 in 1996: https://news.ycombinator.com/item?id=1291314 Still have it (well, them) :).
370.
by Anechoic 12y ago
I wish he'd add more stuff on cymatics though Have you asked him? Prof Russell is quite approachable: https://twitter.com/drussellpsu
371.
by Anechoic 12y ago
That article describes a theoretical infrasound weapon, not something that is being used today: But this [infrasound weapon] has seemed to be not a very practical weapon, since large banks of speakers were required to provide directionalit
372.
by Anechoic 12y ago
Some of the newer non-lethal weapons the US military use for crowd control include a directional infrasound "gun" that basically vibrates your inner organs fast enough to make everyone super nauseous. Do you have a cite for this
373.
by Anechoic 12y ago
Tim Cook should have said something like "We do not provide bulk data to any third party." In a strict sense that's probably not true, they may have to provide some form of bulk data to outside parties for accounting purpos
374.
by Anechoic 12y ago
Amazon is R&D'ing and manufacturing tablet/e-reader devices Which shouldn't that be built into the price of those devices?
375.
by Anechoic 12y ago
Some data indicates there is a 23% higher level of drug use among blacks than whites My quote was "whites and blacks are known to use use and sell at about the same rates " - your link shows 8.7% of whites use drugs vs 10.0% o
376.
by Anechoic 12y ago
Just a guess: more white females than black females go to college, In terms of raw numbers, yes, because there are more white females than black females in the U.S. In terms of rates , no, black women enroll in college at a higher rate t
377.
by Anechoic 12y ago
Black males are disproportionately represented among those in poverty or with low income compared to white males. If the police completely ignored race, we would expect black males to be arrested at a higher rate than white males. When is
378.
by Anechoic 12y ago
In addition to what jzwinck recommended, I'd also recommend the Loudspeaker Design Cookbook [0] and the Master Handbook of Acoustics [1] If you're an engineer that's comfortable with differential calculus, I'd recommend
379.
by Anechoic 12y ago
It's the time-of-flight difference between when the one ear receives the wave front and the other from a change in the sound that gives us the directional information. That's part of it, the other part is the head related transf
380.
by Anechoic 12y ago
I also suffer from Ménière’s disease (thankfully only in one ear, as an acoustical consultant having it in both ears would mean the end of my career) and while it was never bad enough that surgery was considered, my impression from speaking
381.
by Anechoic 12y ago
Why can't they just install more speed-bumps? Off the top of my head: - Given the variety of suspension systems in cars (and available aftermarket options), trying to make a speed bump targeting one speed (or even a relatively narrow
382.
by Anechoic 12y ago
A google search shows a bunch of related articles in the NY Times, Boston Globe, and CNN (for example, http://www.nytimes.com/2012/05/21/business/increasingly-men-... http://www.boston.com&#x2
383.
by Anechoic 12y ago
I never hear anyone say "We need more female lumberjacks|roofers|trash collectors|pilots" There actually is a push to attack more female pilots, this for example: http://www.dailymail.co.uk/travel/article-2
384.
by Anechoic 12y ago
They haven't extended the T since I think the 80s (Not counting those silver line buses). The commuter rail system has been extended (Worcester, Old Colony) and those relatively simple expansion ran into huge obstacles because of com
385.
NTSB Issues Recommendations On Certification Of Li-On Batteries(ntsb.gov)
2 points by Anechoic 12y ago|0 comments
386.
by Anechoic 12y ago
FYI PayPal started a similar program last fall: https://www.paypal.com/webapps/workingcapital/
387.
by Anechoic 12y ago
An exclusive airline that is basically 1st class through out the entire cabin. Midwest Express tried this in the late 1990's-early aughts. It didn't work out for them.
388.
by Anechoic 12y ago
high speed maglev will be quite noisy too. At <100mph, the TR08 is fairly quiet [0]. When I was en Elmsland for the noise testing, it was common for the vehicle to sneak up on us when it was running at lower speeds. At higher speeds, e
389.
by Anechoic 12y ago
They don't even need to buy one of those firms, they have some pretty sharp audio/acoustics guys working for them (including THX founder Tomlinson Holman), they could easily design premium audio products in-house. It can't be
390.
by Anechoic 12y ago
This is, not coincidentally, just under the 85 decibels or so that can, over long periods of exposure, compromise the delicate infrastructure of the human ear. There is a presumption that is commonly made in many circles (including this a

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