Assuming standard conditions - Sea level, 68 F, 35 Relative Humidty.
I am working on a project which I need to know how long it will take to eqaulize pressure between two air receivers using 150 Feet of 4" diameter pipe assuming no additional air is being supplied. Air receiver #1 is 31,210 ga
please advice on how to do cost benifit analysis of two or more designs considering cost,safety, maintenance,....etc
i am working as junior mechanical engineer after graduating from college since then i have been facing the problem to evaluate different options to decide the best one to imp
Can anyone tell me how to join pvc 1" pipe with GI 1" pipe.
procedure & any compliment i have to use or any solution if so kindly write in details...Thank ......JYK
I wish to fit a Maxwatt 5500w 4-stroke petrol generator to supply power to my Houseboat. The noise level @ 7m is 74db (A).
Beside sound proofing the enclosure can I fit a exhaust muffler / waterlock which inboard engines use?
At CES, we determined that if you insist on buying a 3DTV this year, Panasonic should be on the very short list. Now, the company has priced a 3DTV for the first time—$5,900 when converted from yen.
Though Panasonic announced that they'd be selling 3D plasmas in the US starting this year, they'd never spoken of price until a recent press conference in Japan where they stated that their 54-inch, 3D-capable Viera TH-P54VT will run the equivalent of $5,900.
That's a lot of money. However, the TH-P54VT won't be the cheapest model available from Panasonic this year, as Panasonic promised 3D models as small as 50-inches.
CrunchGear notes that Panasonic seems to be pricing 3D as an $800 upsell over their premium 2D plasmas, though from piecing together prices, even that estimate may have been a bit conservative.
In truth, there's no way 99% of the population will drop $5k on any TV when you can finally score a decent quality, 46-inch LCD or plasma for well under a grand. If Panasonic wants glasses-based 3D to take off, they need to price the tech to sell. [Panasonic via CrunchGear]
Oh, I have a very cool anaglyph (red-green 3D images) for you! Stuart Atkinson from the Cumbrian Sky blog has created some fantastic anaglyphs of images from the Mars rover Opportunity as it investigates Concepcion crater. Here are some blocks that look like ejecta from the impact itself:
[Click to embiggen.]
These are beautiful! They almost look sedimentary, which at least makes some sense given that the region Opportunity is roving, Meridiani Planum, was once under water. Closeups of those rocks show they have the famous "blueberries", concretions of jarosite formed by mineral-laden water.
Stuart has lots more pictures he’s fiddled with, too, and it’s well worth your looking around his site. You should also read Emily Lakdawalla’s great description of Concepcion, talking about how we know it’s a fresh crater about 1000 years old. It’s a fascinating read.
An enticing romantic drama with an assured and sexy performance by Jess Weixler.
A thought-provoking spiritual original by the Coen Brothers that salutes the mystery of God, the futility of seeking answers, and the need to live as best we can in a sea of roiling troubles and uncertainties.
An exquisite cinematic masterpiece that is both funny and sad and all the emotions in between; it touches the heart with its treatment of beauty, music, death, and abandonment.
Gadget lust can get in the way of romance—like when your dinner date checks her email over dessert or live-tweets the entire encounter. We've got our share of these stories, but we really want to hear yours.
Maybe your spouse's reaction to your 18 TB video collection of bendy redheads wasn't all that positive. Maybe you drunk dialed your ex on Skype. Maybe you learned that power cords aren't the best idea when it comes to kinky restraints. Maybe your date rudely checked her email in the middle of dessert and proceeded to pull out a second phone to continue reading after you teasingly confiscated her first. (I'm sorry! Won't do it again. Call me?)
Whatever the details, I want to hear about how gadgets or technology interfered with your love life. So send your stories to me with the subject of "Bad Valentine Tales" and we can share the horror.
Picture by sunshinecity
As @bethbeck mentioned yesterday in her post “Ideas on How to Open NASA? Spill!” -
We’ve deployed a cool idea-sharing tool to let you give input, comment on input of others, and vote ideas up or down. Your ideas will feed into NASA’s Open Government Plan. You need an account first, but that’s as simple as adding your e-mail and a password.
We are looking forward to your ideas!
P.S. If you are interested in visiting the Open Initiative websites of other government agencies, Sunglight Labs has a great tracking site setup. I’ve also included a list of all the sites for you here:
Not sure if this is a suitable question for this forum, if not please say so.
If I have a fractured knee cap that has/had fluid in the joint which has not been drained, where does this fluid go? How long or how does the fluid go away? While wearing the velcro removable cast/brace the foot and a
Hello,
I want to do light energy saving simulation (based on daylight availability) where each luminaire consists fluorescent tubes (T5,T6 or T8) with a dimmable electronic ballast, which can dim the lamp output smoothly and uniformly.
I have to know luminary coefficient of utilization
Say you've got an aging laptop that would be perfect for playing WoW or Star Trek Online on your television...if only it had HDMI out—that's where the Atlona AT-HDVieW comes into play.
Running off mere USB power, the Atlona AT-HDVieW takes VGA and 3.5mm audio, combines the signal and outputs it all at 1080P through HDMI. Plus, the scaler/converter communicates with your TV, ensuring the proper output resolution in case 1080P isn't just right.
The Atlona AT-HDVieW will be available later this month for $120. In the meantime, those Klingons will need pay for what they've done on a 13-inch screen. [Atlona via SlashGear]
This is not a rainbow. It's a moonbow, an extremely rare atmospheric phenomenon caused by the near-full moon that it's extremely hard to catch. So hard, in fact, that you can only see its colors thanks to long-exposure photography.
It was captured by Wally Pacholka last January 20, at the Haleakala Crater on the Island of Maui, Hawaii. The moonbow—or lunar rainbow—is caused when the near-full moon at less than 42 degrees in a dark sky. The colors are so faint that the human eye color receptors can't be excited enough for the brain to identify them. Therefore, they appear as white arcs to the naked eye. Only by using long-exposure photography you can reveal the diffraction of the moonlight through the microscopic water droplets suspended in the air.
By the way, that red thing shining on the sky? It's Mars rising. Check out the rest of Wally's amazing images at [Astropics]
From Inside Rensselaer (RPI electronic publication): "Acoustics expert Henry Scarton, associate professor of mechanical, aerospace, and nuclear engineering and
director of the Laboratory for Noise and Vibration Control Research, has been named a Life Fellow of the American Society of Mechanical En
I haven’t read all the new material yet that my good friends at DeSmogBlog are producing. But I have long been suspicious of the attacks on leading climate researchers, like the recently vindicated Michael Mann, because they are so obviously diversionary, and yet also so obviously strategic.
There is no doubt that those attacks have been mounting; I believe a new and full scale “war on science” is afoot in the climate arena, something I hope to say more about shortly.
But in the meantime, it appears that following ClimateGate and GlacierGate, we are once again getting some revelations taking on the other side. Maybe this means the pendulum will shift, and good science can move back off the ropes, where it has been for too long. We’ll see. I’ll be watching closely.
We've seen a ton of Core i5 notebooks recently, all loaded with Intel's impotent integrated graphics, which are part of the chip. Now, Nvidia's Optimus enables PCs to switch automatically between Intel's crappy integrated graphics and Nvidia's beefier graphics cards.
Optimus is a new technology that allows Intel's integrated GPU to coexist with a discrete Nvidia GPU in a new way, seamlessly alternating between the two depending on the task at hand. It works with GeForce 200M series, GeForce 300M series, next-gen GeForce M, and next-gen Ion GPUs, as well as Intel's Core 2 Duo, Core i3/i5/i7, and Atom N450 processors.
At the most basic level, Optimus is similar to the switchable graphics that Nvidia pioneered a few years ago. But switchable graphics as currently conceived are a pain in the neck: You have to switch manually, there's generally a 5-10 second delay, your screen flickers, you have to shut down certain applications. Optimus still includes a manual option, but otherwise automatically decides what can run on integrated graphics (regular web browsing) and what needs an extra boost (games, Flash video, etc), making the switch for you behind the scenes. It makes the change so quickly by letting the Nvidia GPU handle the processing duties while still employing Intel's IGP as a display controller, as in the diagram above.
One drawback is that Optimus relies on the software to tell it which graphics to employ. That'll be done through an Nvidia verification process and accessed through automatic online updates, but there may be instances where your PC doesn't recognize a software and won't know whether to use the IGP or the Nvidia GPU. You can still switch manually in those cases, but it's an unfortunate extra step.
Performance hasn't been confirmed yet by a third party, but Nvidia posits that Optimus is up to an 8x improvement across apps and games than Intel's integrated solution. And because it only kicks in when needed, there's purportedly not much of a battery drain, depending on how often you use intensive graphics.
Nvidia says there will be more than 50 notebooks packing Optimus by this summer, although today it's launching only on a few Asus notebooks like the UL50Vf, an ultraportable which houses both a Core2Duo SU7300 and a GeForce G210M.
What we don't know—but what we strongly suspect—is if Optimus is the solution Apple has been waiting for before refreshing its Macbook line. The hiccup: currently, Nvidia says that Optimus is only compatible with Windows 7. But with the Macworld just around the corner, we may be seeing Optimus Macbook Pros sooner than later. [Nvidia]
JSC chief 'anxious' about facility's future, Houston Chronicle
"Coats and NASA administrator Charles Bolden met with reporters after Bolden spoke with Johnson employees in Houston. "The workers are hurting," Bolden acknowledged. Bolden said he could not say what new programs the Houston space center will attract in the wake of Constellation that may account for some of the jobs lost. "We're at the very beginning of trying to understand what this really does mean," said Bolden, himself a former astronaut. "We can't give any answers until we find out what the follow-on programs will be, and what people we can transition to them."
Manned Flights Beyond Earth's Orbit Unlikely Until at Least 2020, Wall Street Journal
"The Obama Administration's revised manned space program doesn't envision U.S. astronauts venturing beyond Earth's orbit until at least 2020, and perhaps years later, according to the head of the National Aeronautics and Space Administration."
Mission correction, Boston Globe
"I hear a lot of people saying, 'Obama kills moon program.' It's not true; the moon program was moribund. What killed the Constellation program [to return to the moon] was years of underfunding since President Bush announced it in 2004,'' said Jeffrey Hoffman, a professor at the Massachusetts Institute of Technology and former astronaut who made five space shuttle flights. "NASA is now engaged on a quick study of what really are the technologies we need to have another go at human space flight beyond the earth."
A New Space Program, opinion, NY Times
"If done right, the president's strategy could pay off handsomely. If not, it could be the start of a long, slow decline from the nation's pre-eminent position as a space-faring power. We are particularly concerned that the White House has not identified a clear goal -- Mars is our choice -- or set even a notional deadline for getting there. The National Aeronautics and Space Administration and Congress need to keep the effort focused and adequately financed."
It's been a long time coming, but Apple's latest pro photo software, Aperture 3, is here. Apple's claiming over 200 new features, pulling in iPhoto stalwarts like Faces and Places, and new slideshows with HD video.
Faces and Places work just like iPhoto, using face detection and tagging, so you can organize photos by people or by where you took them, though now it uses thumbnails of photos that you can actually drag-and-drop photos onto a map. It's the same Faces engine, but you can restrict face recognition to particular projects, instead of having it scour your whole library. With Places, it works with GPS trackers in a pretty neat way: When you import your tracklog, all you have to do is tell it where the first photo was taken, and then using timestamps, it'll automatically plot the rest.
Also like iPhoto, you can now upload directly to Facebook and Flickr. Since they're heavily targeting the hardcore iPhoto user who now wields a DSLR, not only have they streamlined the interface to make it a more natural transition, when you import your iPhoto library, it preserves all of your image adjustments, events, places and faces.
Brushes brings non-destructive painting effects to Aperture, with 15 Quick Brushes for effects like dodge and burn. You can actually apply or remove any adjustment—like contrast or saturation or curves—using brushes. With its new edge detection tech, you can, for example, boost contrast over the whole image, and then use the brush + edge detection to cleanly wipe the effect off of the sky. Adjustment presets are radically improved too—you can save combos of adjustments, like boosted sharpness and saturation with a cooler white balance, and they can be imported and exported.
One of the new things for pros is that they've rewritten the way the database works, so you can now sync and merge libraries. Which means you can take a self-contained library out on the road, do a bunch of imaging work, and then merge it back to your master library, and it'll sync just the changes you made while you were out.
Perhaps the most interesting bit from the creator standpoint are slideshows that integrate photos, audio, text and HD video that can be exported to iTunes and work with the iPhone and iPod touch, though we'll have to see how powerful it really is.
Apple doesn't mention it, but the thing I'm really hoping they added a lot of? Speed. Speed. Speed. Speed. Especially after using Adobe's Lightroom 3 Beta. Since Aperture 3's fully 64-bit on Snow Leopard, I'm pretty hopeful, actually. The bad news is that's restricted to Intel Macs only, it looks like. It's available today for $200 for the full version, or $100 to upgrade, with a 30-day free trial here.
Apple Releases Aperture 3
New Features Include Faces, Places & Brushes
CUPERTINO, Calif., Feb. 9 /PRNewswire-FirstCall/ — Apple® today introduced Aperture™ 3, the next major release of its powerful photo editing and management software, with over 200 new features including Faces, Places and Brushes. Building on the innovative Faces and Places features introduced in iPhoto® '09, Aperture 3 makes it even easier and faster to organize large photo libraries. Aperture 3 introduces new tools to refine your photos including Brushes for painting image adjustments onto parts of your photo, and Adjustment Presets for applying professional photo effects with just one click. Stunning new slideshows let you share your work by weaving together photos, audio, text and HD video.
"Millions of people love using iPhoto to organize, edit and share their digital photos," said Philip Schiller, Apple's senior vice president of Worldwide Product Marketing. "Aperture 3 is designed for both professionals who edit and manage massive libraries of photos and iPhoto users who want to take their photos further with easy-to-use tools such as Brushes and Adjustment Presets."
"Aperture 3 gets it right," said National Geographic photographer, Jim Richardson. "The image editing tools are exactly what I have been asking for, they're so easy to use and give me a level of control that I never even thought possible."
"I chose Aperture because it was the most powerful archiving application around, but it's now an unbelievable imaging tool as well," said Bill Frakes, Sports Illustrated staff photographer. "I am beyond impressed with the massive changes made in Aperture 3."
Aperture 3 allows you to organize large photo libraries with even more flexibility using Projects and the new Faces and Places. Faces uses face detection and recognition to find and organize your photos by the people in them. You can view faces across your entire photo library or view just the faces that appear in selected projects. In a new view that speeds up the organization process, Aperture 3 displays faces that have been detected but haven't yet been named. Places lets you explore your photos based on where they were taken, and like in iPhoto, Places automatically reverse geocodes GPS data into user-friendly locations. In Aperture 3, you can assign locations by dragging-and-dropping photos onto a map or by using location information from GPS enabled cameras, tracking devices or your iPhone® photos.
The new Brushes feature allows you to add professional touches to your photos by simply painting effects onto the image. Aperture 3 includes 15 Quick Brushes that perform the most popular tasks like Dodge, Burn, Polarize and Blur, without the complexity of layers or masks. Brushes can automatically detect edges in your images to let you apply or remove effects exactly where you want them. Aperture 3 includes dozens of Adjustment Presets that apply a specific style or look to the entire image with just a click. You can create your own custom presets or explore the techniques of other photographers by importing theirs.
Aperture 3 makes it easy to share your work with stunning slideshows that weave together photos, audio, text and HD video. You can select one of six Apple designed themes or choose your own transitions, background, borders and titles, and even add your own soundtrack. You can export your slideshows directly to iTunes® to take with you on your iPhone or iPod touch®. You can also share photographs as beautiful prints, create custom-designed hardcover books and publish to online photo sharing sites like Facebook and Flickr, right from Aperture 3.
Pricing & Availability
Aperture 3 is available through the Apple Store® (www.apple.com), Apple's retail stores and Apple Authorized Resellers for a suggested retail price of $199 (US) and existing Aperture users can upgrade for a suggested retail price of $99 (US). A downloadable 30-day trial version is available at http://www.apple.com/aperture/trial. Aperture 3 runs as a 64-bit application on Mac OS® X Snow Leopard® on Macs with Intel Core 2 Duo processors. Full system requirements, online tutorials and more information on Aperture 3 can be found at http://www.apple.com/aperture.
Apple ignited the personal computer revolution in the 1970s with the Apple II and reinvented the personal computer in the 1980s with the Macintosh. Today, Apple continues to lead the industry in innovation with its award-winning computers, OS X operating system and iLife and professional applications. Apple is also spearheading the digital media revolution with its iPod portable music and video players and iTunes online store, and has entered the mobile phone market with its revolutionary iPhone.
© 2010 Apple Inc. All rights reserved. Apple, the Apple logo, Mac, Mac OS, Macintosh, Aperture, iPhoto, iPhone, iTunes, iPod touch, Apple Store and Snow Leopard are trademarks of Apple. Other company and product names may be trademarks of their respective owners.
[Aperture]
