what is the over load capacity of a motor?
Stars Per Hour of Motor
what is stars per hour of motor?
Photo Diodes
hi.
this is upen from chennai.
i m a student n i m trying to build a automatic switch which will work on light conditions(street light) i.e no need to switch it on or off it will automatically be done.
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Low Running Amp of Pump
Dear sir,
Our chilled water system consists of primary and secondary system.
We have 7 nos of same capacity primary chilled water pumps (end suction pump)which are installed parallel. The pump operation is 5 running + 2 stand-by.
The problem is one of the pump is running at low amp co
NASA Scientists Plan To Approach Girl By 2018
Exploring the Carina Nebula by Touch
The raised arcs, lines, dots, and other markings in this 17-by-11-inch Hubble Space Telescope image of the Carina Nebula highlight important features in the giant gas cloud, allowing visually impaired people to feel what they cannot see and form a picture of the nebula in their minds. › Larger image
The Hubble Space Telescope's dramatic glimpse of the Carina Nebula, a gigantic cloud of dust and gas bustling with star-making activity, is a glorious feast for the eyes. Energetic young stars are sculpting a fantasy landscape of bubbles, valleys, mountains, and pillars. Now this celestial fantasyland has been brought into view for people who cannot explore the image by sight.
Max Mutchler, a research and instrument scientist at the Space Telescope Science Institute in Baltimore, and Noreen Grice, president of You Can Do Astronomy LLC and author of several tactile astronomy books, have created a touchable image of the Carina Nebula that is engaging for everyone, regardless of their visual ability.
The 17-by-11-inch color image is embossed with lines, slashes, and other markings that correspond to objects in the giant cloud, allowing visually impaired people to feel what they cannot see and form a picture of the nebula in their minds. The image's design is also useful and intriguing for sighted people who have different learning styles.
"The Hubble image of the Carina Nebula is so beautiful, and it illustrates the entire life cycle of stars," says Mutchler, who, along with Grice, unveiled the tactile Carina image in January 2010, at the American Astronomical Society meeting in Washington, D.C. "I thought that people who are visually impaired should be able to explore it and learn from it, too."
Located 7,500 light-years from Earth, the nebula is a 3-million-year-old gigantic cloud where thousands of stars are cycling through the stages of stellar life and death. The nebula is 300 light-years wide, but Hubble captured a 50-light-year-wide view of its central region.
A Hubble education and public outreach grant allowed Mutchler to produce the special image. The grant is part of his Hubble archival research project to create complete mosaics of a huge collection of individual Carina Nebula images taken by Hubble (http://archive.stsci.edu/prepds/carina/). Mutchler made 300 copies of the tactile image and will distribute them to organizations that serve the visually impaired, including state schools and libraries for the blind and the National Federation of the Blind in Baltimore, Md.
When Mutchler decided to make a tactile Carina Nebula image last year, he immediately called his friend Grice, who is a pioneer in designing tactile astronomy images for the blind.
But Grice says the nebula image is so visually rich, it posed a challenge to design a textured image that conveys its beauty and complexity.
"When I first looked at the image, I didn't know what to focus on," she recalls. "In order to translate the image into a tactile image, I had to make certain that I understood the individual features that make up the image. There was so much to see."
She spent a couple of hours on the telephone with Mutchler, who gave her a guided tour of the nebula. Then she parsed astronomy books, looking for other views of the nebula. One feature, in particular, gave her some trouble. It was the Keyhole Nebula. Grice couldn't see how the shape in the image resembled a keyhole. Finally, she came across a 1950s image of Carina, and suddenly, she got it. The name referred to the shape of an old-fashioned "skeleton" key. Some visually impaired children who have touched the image say the feature actually resembles a foot, Grice says.
Choosing which features to show on the textured image also posed a challenge. Grice says she relied on a lesson she learned from her first NASA tactile astronomy book of Hubble images called "Touch the Universe": less is more.
"Convey just enough to get the idea," she says. "Then provide some Braille text that explains the science and describes the scene. A picture that is jammed with too many tactile details is very overwhelming for the mind's eye."
Grice used the Keyhole Nebula as the focal point and added other important features suggested by Mutchler to tell the story of stellar life and death, such as pillars of gas and dust that harbor infant stars, a cluster of young stars called Trumpler 14, and a massive, unstable star, Eta Carinae, that is near the end of its life.
The pair then developed a tactile code identifying the raised features and wrote a short guided tour that provides more information on the highlighted on the features. The guide and an audio tour of the nebula are on a special Web page called "The Tactile Carina Nebula" (http://amazing-space.stsci.edu/tactile-carina/), on Amazing Space, the Space Telescope Science Institute's education Web site.
A stable of seasoned tactile astronomy evaluators, including Vivian Hoette, the education outreach coordinator of the University of Chicago's Yerkes Observatory in Williams Bay, Wis., and Ben Wentworth, a retired teacher from the Colorado School for the Blind in Colorado Springs, Colo., helped test several prototypes of the image. One such evaluation place was the Youth Slam, held in the summer of 2009 in College Park, Md. The National Federation of the Blind coordinated the event to promote careers in math, engineering, and science.
One of the biggest surprises from their testing was the image size. Grice and Mutchler originally thought that a large (almost 6-foot-wide) or medium-sized (3-foot-wide) tactile image would be appropriate for students. The children who sampled the image, however, preferred the much smaller 11-by-17-inch image.
"Many students felt lost with the larger prototype versions because certain objects were separated by empty spaces," Grice says. "However, the smaller version allowed hands to easily track from one object to another."
Adds Hoette, one of the evaluators: "The smaller size gives them enough details so they can get the big picture, and then they can read the science behind it in Braille text, or they can listen to the audio tour on 'The Tactile Carina' Web page while they are touching the image."
The Grice-Mutchler partnership has worked so well that the duo hopes to produce more tactile Hubble images. "It would be great to build up a catalogue of these images for the visually impaired," Mutchler says.
The Hubble Space Telescope is a project of international cooperation between NASA and the European Space Agency. NASA's Goddard Space Flight Center manages the telescope. The Space Telescope Science Institute conducts Hubble science operations. The institute is operated for NASA by the Association of Universities for Research in Astronomy, Inc. in Washington, D.C.
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Patri Friedman Appears on Freakonomics Podcast
This past Friday, the third episode of the Freakonomics Podcast hosted by Steven Dubner and Steve Levitt featured our own Patri Friedman. The discussion centered on the question, "What if economists ruled the world?"
Sipadan, Malaysia’s Sole Oceanic Island
Sipadan Island, Malaysia by Flickr user tclee9300y
Sipadan is a limestone island. That is really about it. There is nothing to do on the actual island itself, no amusement parks, big resorts with casinos, mini golf or entertainment centers. The magic of Sipadan lies underwater where scuba divers are provided with amazing wall dives where the drop off reaches 2,800 feet into the blue. Snorkelers of all levels will be amazed at what they are able to find within twenty feet off the beach. This is the result of over a thousand years of coral development atop a volcanic cone.
Over 3,000 species of fish and coral life have been classified on Sipadan alone and the sea turtle population on Sipadan is known to be one of the largest in the world, underscoring the perfect conditions for marine life. In fact, the marine life is so amazing and so impressive that Jacques Cousteau himself said it is a rare treat calling it “…an untouched piece of art.” It is no wonder that Sipadan is considered one of the top 10 dive sites in the world.
Once common around the world, islands like Sipadan are becoming increasingly rare having been developed and over dived. Sipadan, like many places, is not immune to such development and the increasing presence of less rustic bungalows are the telltale signs of development. One thing hindering development on the island, are the islamic extremists from the island of Mindanao, Philippines who have kidnapped tourists in the past. Today the Malaysian military has a clear presence on the island doing its best to protect tourists. I would say proceed with caution if you plan on going but then again, wouldn’t you always proceed with caution anyway to go somewhere remote? I believe so. Although, if you really want to stay safe, I guess there is always the local aquarium option.
So is it really worth going? Well, here is the full quote from Mr. Cousteau “I have seen other places like Sipadan, 45 years ago, but now, no more. Now, we have found again an untouched piece of art…”
Brown Crested Flycatcher Visits Fort Desoto Park
I spent Saturday morning birding at Fort Desoto Park with the friendly folks of the St. Petersburg Audubon Society. We were looking for shorebirds, which turned out to be in short supply. So we turned our attention to having a look for the Brown-crested flycatcher that has been reported in the north beach area for [...]
Sanderling – Common Shorebirds on Florida Beaches
One of the cutest and most common shorebirds found on Florida’s beaches is the Sanderling [Calidris alba].
It is also one of the whitest. Visible fieldmarks aside, you could identify this bird by its behavior alone. It is a very small bird (8 inches) with short black legs and runs rapidly up and down the beach, [...]
Spring is on its way…maybe
The lingering Black Redstart on Inner Farne (By Mark Breaks)
Guillemots inspecting the cliffs (by Mark Breaks)
Sunday 28th March comments:
the clocks have jumped forward, the lighter nights are on their way and here comes...the snow. having turned the corner with the weather, it appeared sprig was very much here but looking at the forecast for early this week, the winds are switching to the east and snow is heading our way - time to warn the team to wrap up warm!! The Wheatears and the Sandwich Terns may be in for a shock.
The weekend brought a few highlights, including an immature Iceland Gull to the roost on Knoxes reef whilst the Black Redstart lingers on. Other birds of note included a male Snow Bunting and 13 pink-footed Geese north. the breeding birds continue to come and go, but Shags appear to be almost completed nest building - eggs will be next!
The etching on the ceiling is generating some interest and some news might be breaking soon - but waiting for confirmation.
Underwater Skyscraper: A Self Sufficient City
Upside down, self sufficient, floating island cities. The future will no doubt be an interesting place to be, where potentially millions of people will be pseudo-islomaniacs.
Touted as a self-sufficent floating city, Sarly Adre Bin Sarkum’s Water Scraper utilizes a variety of green technologies. It generates its own electricity using wave wind, and solar power and it produces its own food through farming, aquaculture, and hydroponic techniques. The surface of the submerged skyscraper sustains a small forest, while the lower levels contain spaces for its inhabitants to live and work. The building is kept upright using a system of ballasts aided by a set of squid-like tentacles that generate kinetic energy.
The architects “envision a future where land as a resource will be scarce; it is only natural progression that we create our own. Approximately 71% of the Earth’s surface is ocean, even more if climate change has its way, hence it is only natural progression that we will populate the seas someday.”
Source: Inhabitat.
Where on earth is Skye?
Presently – Peru. But, that won’t last long as Skye Wilson is in constant motion these days. Feeling life was too short to wait for the next adventure, she quit her job, sold her car, rented out her house and embarked on her own private odyssey to experience the world.
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Post tags: cultural experiences, female travellers, long-term travel, solo travel
UGG Australia from the Southern Hemisphere
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In Cairo
Here we are our first post from Cairo. We arrived 2 days ago by the skin of our teeth from Frankfurt. There were about 20 passengers on waitlist we were the last people to be called for our boarding passes. We had a funny taxi ride to the hotel. Every one is very very friendly. People waving and yelling out to us in the taxi. One guy on the back of a motor bike taxi came up to our taxi whist
A similarly designed
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Onsdag d. 31. marts 2010
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Gucci is also an international marker
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FOG
I think I may have had one of the most hair raising incidents ever. A crazy minibus driver flying down an 8 lane motorway in thick fog. It all just seems so strange. Why don't Chinese drivers turn on their lights. Is it really safe to just switch on your hazard lights and think all will be OK. Thankfully the fog has cleared a little this afternoon so hopefully the ride home won't be as scary.